Method for steganographic transmission of information through main optical channel and apparatus for implementing said method

FIELD: radio engineering, communication.

SUBSTANCE: disclosed is a method and an apparatus which enable to conceal protected information in spectrally clocked sets of N multi-protocol data streams. Owing to introduction of decision feedback at the physical layer and enabling adaptation of transmission rate to the quality of the steganographic transmission channel, the reliability of receiving secure information considerably increases.

EFFECT: high security of transmitting additional information with a variable rate and given reliability.

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The group of inventions relates to the field of radio engineering, in particular to the optical multiplex systems with seal (multiplexing) wavelength (MSK, xWDM)used to transmit confidential information.

Due to the nature of signal propagation the proposed method and device are applicable for all-optical transport networks, a single fiber-optic transmission lines, and with the replacement of electrical regenerators (systems binary linear coding system r-digit line coding) without restrictions.

The main optical path (OST 45.178-2001) optic tract regeneration section of fiber-optic transmission systems, which may include intermediate optical amplifiers and to be a medium for the transmission spectral compacted optical signal.

Steganography is the science of the hidden transmission of information by keeping secret the fact of transfer.

The steganographic system - combining methods and tools used to create a covert channel for transmission of information.

Container - any information used to hide secret messages. The filled container (steganographic container - the container containing the secret message.

The steganographic channel (steroidal) is the channel transfer step the container.

The steganographic information transfer - the transfer of confidential information steganographic methods. [Gribunin VG, Bondage, I.N., * Juventus IV Digital steganography /VG Gribunin, I.N. Shackles, IV * Juventus. - M.: salt Press, 2002. - 272, Il.]

Known methods steganographic information security in communication channels (RF patent No. 2410839 on 27.01.2011, "Method for the classification of radio", patent of Russian Federation №2382502 from 20.02.2010, "multi-Way confidential information transfer" and others), namely, that on the transmission side, modulate the parameters of the generator of chaotic oscillations in several information signals, transmit a complex signal over the communication channel to the receiving device detects an information signal by means of reconstruction of dynamical systems and discrete wavelet analysis. The known device the steganographic information transmission (RF patent for useful model №101299 from 10,01 .2011, "Device for streaming steganographic transmission of binary data", VG Gribunin, I.N. Shackles, IV * Juventus. "Digital steganography. Aspects of protection". M: SALT press, 2002, 272 C.). The devices and methods analogs share a number of common disadvantages.

1. To transmit hidden information used information resources main channel data;

2. Considered analogues are not applicable for PE is Adachi hidden information over optical fiber due to the peculiarities of propagation of optical signals in optical guided systems.

The closest to the technical nature of the claimed method and selected as a prototype is "a Way of transmitting multi-Protocol information flows" RF patent №2421793 from 20.011.1111 years, namely, that analyze the speed and transmission protocols, the aggregate incoming N multi-Protocol data flows, set N characters of input N-channel signal of the digital synchronous transmission system formed during each clock interval encode clock set t microwave subcarriers of the n microwave subcarriers generated by the synthesizer subcarriers and m, n and N are connected by the relationAnm+n2N,whereAnm- the number of placements of n elements in m. Modulate radiation m channel optical transmitters, different optical wavelengths, a clock set m microwave subcarriers simultaneously input into the optical signal of the information clock frequency digital transmission system and signal switching. Transmit signals of different digital channels on used working optical wavelengths in accordance with the distribution of wavelength is kontroliruemym the control unit switching the used optical wavelengths between transmitting and receiving terminals communications systems, the distribution of job lengths as follows: high-speed data streams sent by shortwave spectral channels and information flows with lower rates direct spectral channels with a longer wavelength. Combine spectral-spaced output optical signals of all t-channel optical transmitters in group linear optical signal. Transmit group linear optical signal via a linear optical path. Share in the receiving terminal group of the optical signal at m components on the basis of differences of the optical wavelengths, detects each component of the optical signal channel a photodetector. Determine what is microwave subcarrier has been transmitted on each of the m optical channels on a given clock interval with simultaneous separation of the clock frequency of a synchronous transmission system and signal switching. Form the equivalent clock set m microwave subcarriers similar to those obtained by the encoding of the input aggregate N characters at the transmitting terminal, decode equivalent clock set n microwave subcarriers and the switching signals to form a set of N binary symbols, distributed within a given clock interval N output channels receiving t is rminal as well as at the input of the transmitting terminal.

Known the closest analogue (prototype) for their technical nature of the claimed device is a device that implements the method of transmission of multi-Protocol information flows according to the patent of Russian Federation №2421793 from 20.011.1111 year. The device prototype contains the transmitting terminal, which includes a Protocol analyzer, the input device at the terminal N multi-Protocol data flows, the clock frequency and switching signals, encoder switch, synthesizer microwave subcarriers, the control circuit channel optical transmitters, m channel optical transmitters with spaced wavelengths, the device combining spectral-spaced optical channels, the linear optical path. In this case N Multiprotocol information flows connected to a Protocol analyzer, the information outputs digital channels through which the input device to the terminal X Multiprotocol information flows, the clock frequency and switching signals are connected to the N to the information inputs of the encoder switch. and the signal switching is connected to the switching input of the encoder switch and to the input of the control circuit channel optical transmitters spaced wavelengths, the outputs of which are connected to the second inputs of the m optical channel is redaccion with spaced wavelengths. The input clock frequency is connected to the clock inputs of the encoder switch, synthesizer microwave subcarriers and channel optical transmitters with spaced wavelengths. N RF synthesizer outputs the microwave subcarriers is connected to N UHF inputs encoder-switch, m microwave outputs of the encoder switch connected respectively to the inputs of the modulators m channel optical transmitters with spaced wavelengths. The optical outputs of the t-channel optical transmitters with spaced wavelengths is connected to the m inputs of the device combining spectral-spaced optical channels, the output of which is connected to the input of a linear optical path. To the output of the linear optical path connected to the receiving terminal, which contains a device for separating wavelength-separated optical channel, m channel photodetector device, the device clock synchronization, synthesizer microwave subcarriers, m channel device definition subcarrier, the decoder, the decoder signals the switching controller switch for digital channels, switch digital channels and output from terminal N multi-Protocol data flows and the clock frequency. The yield of linear optical path connected to the inlet of the separation device wavelength-separated optical channels, the m outputs of which are connected with therefore, its to the optical inputs of the t-channel photodetectors the first microwave outputs are connected respectively to the information SHF input devices determine the subcarrier and the second microwave outputs connected to the inputs of the device clock synchronization, the outputs of which are connected to the inputs of a clock synchronization device determining subcarrier, the decoder and the input clock frequency synthesizer microwave subcarriers, microwave outputs of which are connected in parallel to the inputs of microwave subcarriers in all m channel devices determine the subcarrier, the channel outputs of the devices determine the subcarrier connected respectively to m n to the information inputs of the decoder. N information outputs of the decoder are connected with N information inputs of the switch, the decoder output for transmitting signals clock frequency is connected with the corresponding input of the switch. The output signal of the switching decoder connected to the input of decoder signals switching. The output of the decoder switching signals connected to the input of the controller switch for digital channels, the output of which is connected to the control input of the switch for digital channels, N information input of which is connected to the N data outputs of the decoder, N informational outputs connected to N inputs of the output device of the terminal N multi-Protocol data flows and the clock frequency. The signal switching comm is operating output switch digital channels connected to the switching input of the output device of the terminal N multi-Protocol data flows and the clock frequency. The output switch for signal transmission clock frequency is connected to the clock input synchronization output device of the terminal N Multiprotocol information flows and frequency.

The disadvantage of the prototype method and device implements is the lack of hidden (stenography) for the transmission of additional information. In addition, a number of essential features (transactions, nodes and links) of the method and device of the prototype is excessive and in some cases fundamentally complicates the solution of the invention.

The objective of the invention is to develop a method of the steganographic information transfer through the main optical path and device for its implementation, which allows to secretly pass additional information with variable speed and a given accuracy.

The objective of the invention is solved in that implements the method of the steganographic information transfer through the main optical path, namely, that analyze the speed and transmission protocols, modulate radiation N channel optical transmitters, different optical wavelengths, the transmit signals of different digital channels on used working optical wavelengths in accordance with the distribution of the wavelength, the distribution of workers DL is n as follows: high-speed data streams sent by shortwave spectral channels, and information flows with lower rates direct spectral channels with a longer wavelength, combine the spectral-spaced output optical signals of all N channel optical transmitters in group linear optical signal, transmitting a group linear optical signal via a linear optical path, share in the receiving terminal group optical signal into N components on the basis of differences of the optical wavelengths, detects each optical component group signal, additionally, on the transmission side based on the steganographic key form algorithm attachments address matrix attachment signal in a multi-Protocol multi-channel optical signal (container), in accordance with the address matrix is attachment protected (concealed) information and signal switching in the position of the spectral-clock set, not used by the algorithm of the attachment position of the spectral-clock set modulate the masking noise M-sequences, embedding hidden information and elements of the noise sequence is as follows: the signal of hidden data is converted into code consisting of sequences encoded signal attachment, the signal-attachments transmit a signal, in which logs the definition to state 1, harmonized code sequence, and the other logical state of a lead in accordance inverted code sequence, each code sequence consists of several chips (CHIP) and has a significantly lower frequency of the chip (fCHIP)than the number of bits of the signal container (information flow), the encoded signal is an attachment that has a smaller amplitude than the signal payload, impose on pulses (units) signal-container and transmit educated thus the total signal at the reception on the basis of the steganographic key form algorithm attachments address matrix extracting the signal that is identical to the address matrix attachment formed on the transfer, in accordance with an address matrix extracts signed attachment and signal switching from multi-Protocol multi-channel optical signal, the position of the spectral-clock sets multi-Protocol multi-channel optical signal, not shown in the address table is restored to the level of logical units, the signal-attachment, which is marked on the receive correlation method, is compared with the signal-attachment separated from the signal-container and signal errors of the receiving optical module, in the case of differences of signals investments allocated to independent the mi methods, form a team of perestroka at which the transmitter generates and transmits a signal perestroka, the signal-attachments transmit consisting of several bits of an identification code representing information about repeating the previous block of additional data, or to increase/decrease the speed of transmission of additional data.

A new set of essential features allows to solve the problem of the invention due to the fact that:

in accordance with the steganographic algorithm and key exercise attachment concealed information, additional to the transmitted multi-Protocol flows and signal switching in the amplitude of the optical pulses, form a group of the optical signal, which is a container for hidden information. Free steganographic attachments pulses to disguise the fact the beginning and end of transmission of protected information injected noise M-sequence;

- repeat the last mistakenly by a block of additional data, is produced as follows: receive and analyze the data block, in case of discrepancy between the results of decoding by two independent methods form the team perestroka, this command transmitting part outputs a signal of perestroka, after analysis, to which the receiving portion transmitting part to repeat yet last data block;

- if necessary, change the speed of transmission of additional data act similarly, except that send over the communication channel as an additional data signal perestroka, and the signal increase/decrease speed.

The objective of the invention is solved in the inventive device the steganographic information transfer through the main optical path containing the transmitting terminal, the linear optical path, a receiving terminal, the transmitter terminal comprises a Protocol analyzer, the input device at the terminal N multi-Protocol flow of information and the signal switching switch, a device combining spectral-spaced optical channels, with N multi-Protocol information flows connected to a Protocol analyzer, the information outputs digital channels through which the input device to the terminal N multi-Protocol flow of information and the switching signals are connected to the N to the information inputs of the switch, the signal switching is connected to the switching input of the switch, the output device Association spectral-spaced optical channels connected to the input of a linear optical path, the output of the linear optical path connected to the receiving terminal, which contains a device for separating spectral-is otnesennykh optical channels, the switch and the output terminal N Multiprotocol information flows, and the output of the linear optical path connected to the inlet of the separation device wavelength-separated optical channels, N informational outputs of the switch are connected to N inputs of the output device of the terminal N multi-Protocol flow of information, and N outputs which are the outputs of the multi-Protocol information flow device, due to the fact that, in addition to the transmission of the inputted signal-attachments, as well as included in the transmitting terminal, the buffer into N channels, N devices for the transmission of additional information, the transmitting optical module operating at a spaced wavelengths, at the reception - N devices receive additional information included in the receiving terminal, and a device selection signal attachment, and N-outputs of the switch are connected through the buffer into N channels of input payload N devices for the transmission of additional information, with the input of additional data signals which are connected to N outputs of the signal-attachments, in addition, the N outputs of the switch are connected to the inputs of the signal attachment, input signal switching, which is connected with the corresponding output of the input device to the terminal N mu is theprotocols information flows and switching signals, the outputs of the N devices for the transmission of additional information connected to respective inputs of a device combining spectral-spaced optical channels, the information input device signal-attachment signaled protected information, and through the key input is written to the steganographic key, N-output device for separating wavelength-separated optical channels are connected with the inputs of the N devices receive additional information, outputs the additional data signals are connected to N inputs of the device selection signal, input, and output signals of the payload is connected to N inputs of the switch, the output signal switching device selection signal attachment is connected with the corresponding input of the switch, the information output device selection signal attachment is the output signal of protected information, and through the key input is written to the steganographic key, each of the N devices for the transmission of additional information includes highlighters clock frequency useful data and additional data, a permanent storage device programs, delay element, counter, driver commands, buffer, generator CHIP signals, electronic keys, the logical element ILI, permanent storage device, a modulator, a switch, operatively the storage device, the code generator identification, the transmitting optical module, these elements are connected as follows, the input selector clock frequency of the payload is connected to the second input of the modulator and an input of the payload device for the transmission of additional information, the output of selector clock frequency payload connected to the first input of the counter, a second input which, in turn, is connected to the selector clock frequency of additional data, an input connected to the input of the delay element and an input of additional data device for the transmission of additional information, the output of the counter is connected to the first input of the shaper teams, with the second input of which is connected to the DC storage device and to the third input of the shaper teams connected to the output of the decoder code recognition device receiving additional information, the first output driver commands connected to the input of generator CHIP signals, the output of which is connected to the address inputs of two permanent mass storage device, the second output driver commands is connected to the input of the code generator is up and the second input switch, the third input of which is connected to the output of the code generator is up, the output of delay element connected to the input buffer, the first o is d which is connected to the first input of the first electronic key, and the second output with the first input of the second electronic key, the outputs of the first and second electronic switches connected to the first and second input respectively of the logical element ILI, the output of which is connected to the input of the operational storage device and the first input of the switch, the output of the first constant storage device connected to a second input of the first electronic switch and the second input of the correlator device receiving the additional information, a third input connected to the second input of the second electronic switch and the output of the second constant storage unit, the output of the operational storage device is connected to the fourth input of the switch, the output of which is connected to the first input of the modulator, the output of which is connected with transmitting optical module whose output is the output device for the transmission of additional information, each of the N devices receive additional information includes receiving optical module, the logical element ILI, the decoder code recognition, electronic key, the node equivalence, filter, detector additional data, reducing the pulse shape, the correlator, the selector clock frequency, adjustable delay element, trigger, these elements are connected as follows, entrance reception optical module is the I input of devices receiving the additional information, the first output of the receiving optical module is connected to the input of the filter, the second inputs of the logic element ILI and trigger and an output signal of the payload device receiving additional information, the second output of the receiving optical module connected to the first input of the logical element ILI, the output of which is connected to the first input of a trigger, the output of which, in turn, is connected to the input of the selector clock frequency and the second input of the adjustable delay elements, the output of selector clock frequency connected to the first input of the adjustable delay elements, the output of which is connected with the second inputs of the electronic key and the node equivalence, the yield of the latter is connected with the second input of the decoder code recognition and the first input of the electronic switch, the output of the filter connected to the input reductant in the form of pulses, the output of which is connected to the first input of the correlator, the output of the latter is connected to the input of the additional data detector, the output of which is connected to the first input node equivalence, the output of the electronic switch connected to the first input of the decoder code recognition and is the output signal of the additional device data receiving additional information.

Thanks to the new essential features at the expense of added elements and is of Vasa in the claimed device, implemented stenography (reserved) transmission of information at a given speed and reliability. This introduced the possibility of adaptive automatic speed change transmission of additional data based on the transmission conditions.

The analysis of the level of technology has allowed to establish that the analogues, characterized by a set of characteristics is identical for all features of the claimed method and device for the transmission of additional information, no. Therefore, each of the claimed invention meets the condition of patentability "novelty".

Search results known solutions in this and related areas of technology in order to identify characteristics that match the distinctive features of the prototype of the features of the declared objects showed that they do not follow explicitly from the prior art. The prior art also revealed no known effect provided the essential features of the claimed invention transforms the problem of the invention. Therefore, the claimed invention meets the condition of patentability "inventive step".

The claimed group of inventions can be used in the fields of human activity, requiring protection of circulating information (for example, commercial or private secrets). The claimed device which can be decomposed to the level of known functional blocks, modules, components, described in the literature, registered in the established order in the patent register. Therefore, the claimed invention meets the condition of "industrial applicability".

The stated objects of the invention are illustrated by the drawings, which depict:

figure 1 - evaluation of steganographic complexity of the claimed method;

figure 2 - structural diagram of the device of the steganographic information transfer through the main optical path;

figure 3 - block diagram of the devices transmit and receive additional information working at one of the ends of the line;

figure 4 - structure of the optical signal generated by the device of the steganographic information transfer through the main optical path;

figure 5 - probability of errors in the steganographic channel transmission information;

figure 6 - diagram of the formation and transmission of the steganographic container;

figure 7 - diagram of the reception of the steganographic container and the discharge from it protected and container information;

on Fig - scheme investment of additional data (revision 7 step 6);

figure 9 - diagram of the allocation of additional data (specification 5, step 7).

The implementation of the inventive method consists in the following. The input of the transmitting terminal served N transmitted digital multiprotic the selected threads are received by the analyzer transmission protocols, analyze where speed and transmission protocols together N multi-Protocol information flow, form a signal switching. The distribution of job lengths as follows: high-speed data streams sent by shortwave spectral channels and information flows with lower rates direct spectral channels with a longer wavelength. Based on the steganographic key steganographic algorithm for transmission and reception address form a matrix that shows the location of the signal switching and protected information in the spectral-clock sets (the values of the logical variables in all spectral channels at a specific time) of the transmitted information, which serves as a container. In accordance with the address matrix provide an attachment of the protected information and signal switching pulse packages (logical 1) spectral-clock set. In idle investment of sensitive information and signal switching pulse parcels put the elements of the noise sequence with distribution close to uniform. The useful signal data (signal-container) modulate additional information (protected information, signal commute the AI, noise sequence) on the transfer, which may be a signal for more real-time data, the previous block of signal data, a request for repetition of the previous block of signal data, the request on positive or negative change speed transmission of additional data. Signal attachment data encode CHIP-sequences with bit-period, which is determined based on the transmission speed of the protected information, the quality of the communication channel, the speed signal of the container. Transmit signals of different digital channels on used working optical wavelengths in accordance with the distribution of wavelength controlled by the control unit switching the used optical wavelengths between transmitting and receiving terminals of the communication systems. In the receiving terminal is shared by multi-channel optical signal into N optical channels. Signal attachment and signal payload is shared by two independent methods - correlation and logical method of selection of the error signal. The results are compared and if a match is considered successful reception. In case of differences form the query command to repeat at which the transmitter sends the channel request signal to repeat. If the reception and decryption of the signal changes soon the tee, form the team in passing in part on the speed change. A sub-information is extracted, separated signal switching and protected information, the last output to the recipient. Signal switching is used to separate multi-Protocol stream output ports. Bits noise nested sequence after allocation ignore.

The claimed method of the steganographic information transfer through the main optical path provides the steganographic protection input additional confidential information, in addition due to the introduction of systems crucial feedback on the physical level and automatic speed control the transmission of additional data is specified reliability of the transmission of confidential information.

The quality criterion of the steganographic attachment is stegano graphic durability. Steganographic resistance - capacity steganographic algorithm to resist possible attacks on him. Steganographic resistance is defined by three components:

- the complexity of the discovery of the fact of transfer;

- the complexity of the data extraction from the container;

- difficulty reading the extracted messages (when using cryptographically system).

The impossibility of determining (establishing) the fact of being confidenciales information steganotaenia is based on the fact, after embedding the message, the modified properties of the container and acquired qualities it is impossible to determine that it contains steganotaenia. In the proposed method this is achieved through the use of secondary modulation noise sequence idle when the attachment bit Multiprotocol kHz signal-container. Thus, an attacker who is not familiar with this method will polgate that the signal is transmitted with distortion. In the worst case, the attacker will not know the facts of the beginning and end of transmission of protected information as pulses of steganotaenia, even in the absence of the protected information will be modulated noise sequence. This establishes the equality of the a priori and a posteriori information possessed by the attacker.

The inability to extract data from steganotaenia determines the level of protection in the event that the attacker presence of the fact of the attachments for more information. The intruder may be able to determine that the statistics observed in the channel sequence differs from the known statistics of the containers, but he is not able to establish the cause of these differences. Thus, although the offender and suspect the existence of a covert channel, but cannot prove, or is poverhnosti. The required evidence may be received, if the offender will be able to extract the hidden message. To retrieve the protected information from steganotaenia will need serious material and computational costs. The more costs you will need, the higher the steganographic resistance. This understanding of the steganographic resistance is the most objective, easy mathematical modeling and selected as the standard of proof solving the problem of the invention.

The validity of theoretical assumptions were tested using a simulation model of the multichannel fiber-optic transmission system under the following conditions:

1) the number of spectral channels N=80;

2) average continuous word length signal attachment, sufficient to detect steganographic channel k=48 bits;

3) the number of zeros in the spectral-clock set l;

4) the probability of occurrence of the zero signal-container p0K=0,47-0,497;

5) the number of deposited data bits (including signal switching) in the spectral-clock set v;

6) the container payload signals are synchronous transmission systems (SDH), threads, 10GBASE-SW and ATM;

7) the power of the dark photocurrent (iTT) - 10-5mA;

8) the required optical signal to noise ratio (OSNRTr) - 15 dB;

9) the quantum of the Wai efficiency 0,81;

10) the power of the optical signal at the receiver input is -37 dB. The simulation results shown in figure 1, show that the application of the proposed method provides high steganographic complexity, increasing many times with growth:

- the number of spectral bands;

- the number of symbols in the code word attachments;

the amount invested characters in the spectral-clock set.

This steganographic complexity (S) is defined:

S=i=1k(N-li)!(N-li-v)!.

For steganalytic task complete enumeration of possible options for the attachment of the protected information in a Multiprotocol container is a difficult task, as it belongs to the class O(Nk).

From the data (figure 5) also shows that after the introduction of auto optimize speed transmission for more information and crucial feedback transmission channels as a useful and additional information to satisfy the requirement for the dostovernosti transmission, which indicates that the solution of the invention.

The device of the steganographic information transfer through the main optical path (figure 2) consists of transmitting and receiving terminals, as well as linking their linear optical path 81-8m+1(since this element is an integral and formed M intermediate device in the General form of a linear optical path consists of M+1 sections). The transmitting terminal includes a Protocol analyzer (PA) 1, the input device at the terminal N multi-Protocol data flows, the clock frequency and switching signals (UVV) 2, switch 3, the buffer into N channels 4, N devices for the transmission of additional information (UPDI) 61-6Nthe signal-investments (UIF) 5, a device combining spectral-spaced optical channels (PP) 7. The receiving terminal, in turn, contains a device for separating wavelength-separated optical channels (UR) 9, N devices receive additional information (Updi) 111-11Nthe device selection signal attachment (UVS) 10, the switch 13, the output from terminal N multi-Protocol data flows and switching signals (Uwiv) 14. The device for the transmission of additional information (figure 3) consists of a selector clock frequency payload (WH PD) 6.1, the village is wannago storage device programs (hereinafter ROM PR) 6.2, delay elements (EZ) 6.3, counter 6.4, driver commands (FC) 6.5, 6.6 buffer, the selector clock frequency of additional data (WH DD) 6.7, generator CHIP signals 6.8, electronic keys (EK) 6.9 and 6.11, logic element ILI (PE) 6.10, permanent storage devices (ROM) 6.12 and 6.13, the modulator 6.14, switch, 6.15, random access memory (RAM) 6.16, code generator identification (GKO) 6.17, the transmitting optical module (POM) 6.18. The device receiving additional information (figure 3) contains the decoder code recognition (CSD) 11.12, EK 11.11, the node equivalence 11.10, filter, 11.6, the additional data detector (DDD) 11.9, restorer pulse forms (VFI) 11.7, the correlator 11.8, the selector clock frequency (WH) 11.4, adjustable delay element (EPE) 11.5, LAYE 11.2, trigger 11.3, the receiving optical module 11.1.

The elements are interconnected in the following way (figure 2, 3). Multiprotocol information flows on the information inputs of the transmitting terminal, which inputs AP 1, N informational outputs which output signal switching are connected to the corresponding inputs UVV 2. N information outputs UVV 2 are connected to the appropriate information inputs of the switch 3. Signal output switching UVV 2 is connected to the input of the signal switching switch 3. N outputs of the switch 3 is connected to the ACC is dtweedie inputs N channel buffer 4, N outputs of which are connected with inputs of the useful signal data corresponding to UPDI 61-6Nthe outputs are, in turn, is connected to N inputs of EE 7. Output EE 7 is the output of the transmitting terminal and is connected to the linear optical path 81-8M+1. The outputs of FDS 5 is connected to the inputs of additional data corresponding to UPDI 61-6N. Inputs protected information and input steganographic key UIF 5 are the corresponding inputs of the device of the steganographic information transfer through the main optical path. The output end of the optical transmission path of the signal 81-8M+1connected to the input UR 9, N outputs of which are connected to the inputs of the respective N Udidi 111-11Nthe signal outputs additional data, which are connected to N inputs of UVS 10. The signal outputs of the payload N Udidi 111-11Nconnected to respective N inputs of the switch 13. The output signal of the switching control computer system 10 is connected with the corresponding input of the switch 13, N informational outputs of which are connected with the same inputs Uwiv 14. The outputs of the multi-Protocol information flows Uwiv 14 are the corresponding outputs of the receiving terminal. The release of protected information and the input of the input of the steganographic key UVS 10 are the corresponding output and I is the home device of the steganographic information transfer through the main optical path. The signal payload from the corresponding output N-channel buffer 4 is supplied to the second input of the modulator 6.14 and entrance WH DD 6.1, the output of which is connected to the first input of counter 6.4. The additional data signal from the corresponding output UIF 5 is fed to the input 6.3 EZ and entrance WH DD 6.7, the output of the latter is connected with the second input of the counter 6.4. The output of the counter 6.4 connected to the first input FC 6.5, to the second input of which is connected to the output of the ROM PR 6.2, and the first output is connected to the generator CHIP signals, the output of which is connected with the inputs of the ROM 6.12 and 6.13. The second output driver commands 6.5 is connected to the input of the GKO 6.17 and the second input of switch 6.15. Output GKO 6.17 connected to the third input of the switch 6.15, the output of which is connected to the first input of the modulator 6.14, the output of the modulator 6.14 connected to the transmitting optical module 6.18 whose output is the output device for the transmission of additional information and is connected to the input PP 7. Output 6.3 EZ connected to the input buffer of 6.6, the first and second outputs of which are connected respectively to the first inputs of the first and second EC 6.9 and 6.11, to the second inputs of which are connected the outputs of the first and second ROM 6.12 and 6.13 respectively. In addition, the output of the ROM 6.12 connected with the second input of the correlator 11.8 (4x3 figure 3), and the output of the ROM 6.13 - with a third input of the correlator 11.8 (Ax2 Fig 3). Outputs per the CSO and the second electronic keys 6.9 and 6.11 connected to first and second inputs LAYE 6.10 respectively, and the output LAYE 6.10 connected to the first input of the switch 6.15 and entry RAM 6.16, the yield of the latter is connected to the fourth input of the switch 6.15. The elements of the device receiving additional information 11 are connected as follows: exit UR 9 connected to the input of Prom 11.1 and is the entrance Udidi 11. The first Prom output 11.1 connected to the input of the filter 11.6, second inputs LAYE 11.2 and trigger 11.3, and a signal output useful data Udidi 11 associated with one of N inputs of the switch 13. The second output Prom 11.1 connected to the first input LE 11.2, the output of which is connected to the first input of the trigger 11.3, the output of which, in turn, is connected to the input WH 11.4 and the second input of the EPE 11.5. Output WH 11.4 connected to the first input of the EPE 11.5, the output of which is connected with the second inputs of node equivalence 11.10 and EK 11.11. The output of the filter 11.6 associated with the input VPI 11.7, the output of which is connected to the first input of the correlator 11.8, the output of which is connected to the inputDDD11.9, the output of which, in turn, connected to the first input node equivalence 11.10. The output of node equivalence 11.10 connected to the first input EK 11.11 and the second input of CSD 11.12. The output EK 11.11 connected to the first input of CSD 11.12 and is a signal output additional data Udidi 11 and is connected to the control computer system 10. The output of the RCD 11.12 connected to the third input FC 6.5 respective UPDI 6 (Ax1 3).

All device nodes the steganographic information transfer through the main optical path are widely known and described in literature.

The following components of the steganographic information transfer through the main optical path on the purpose and implementation is completely analogous to the components of the prototype: the Protocol analyzer 1, the input device at the terminal N multi-Protocol data flows and switching signals 2, switch 3, a device combining spectral-spaced optical channels 7, a device for separating wavelength-separated optical channels 9, the output from terminal N Multiprotocol information flows 14.

Buffer into N channels 4 serves as a multi-channel (N) of the delay line and is intended to provide time for processing signals and the formation of matrix attachment UIF 5. Can be implemented as a single N-channel device, or as a set of N independent delay lines. The variant of the construction described in the manual Application of integrated circuit memory / Derugin A.A., Zirkin CENTURIES, Krasovskii V.E. and others - M.: Radio and communication, 1994. - s-160.

The signal attachment 5 provides the reading and storage of the steganographic key, signal switching, the formation on the basis of the steganographic key address matrix attachment, the implementation of the steganographic algorithm the attachment of the protected information, the signal commutes the and and the generated M-sequence in the N pulses of the information sequence, in accordance with the address matrix attachments. It is advisable for the implementation of the UIF 5 to use high-speed microcontroller with the appropriate number of inputs, outputs and memory corresponding to the length of the steganographic key and the size of the matrix attachments. Such devices are described in detail in Howard D., Martin, Designing high-speed digital devices / A. Howard, G. Martin. Rostov - on-don: William, 2006. - s-404.

The device selection signal attachment 10 according to the structure similar to UFS 5, but performs other functions: read, storing the steganographic key formation on the basis of the address matrix extraction, separation of the steganographic channel protected information and signal switching; transfer of protected information to a recipient.

Transmission device 6 and receive additional information 11 can be decomposed into elementary units (figure 3), described below. The peculiarity consists in the fact that SIP 6.18 and Prom 11.1 pairs are configured on different wavelengths, with the aim of implementing the technology division multiplexing wavelength (WDM) in accordance with the family of ITU-T G.694x.

WH PD 6.1 WH DD 6.7 and WH 11.4 are known devices, the scheme is presented, for example, in the book Slepov NN. Modern technology of digital fiber with the TEI communication. ): Eco-Trends. 2000 s-257.

Schema counter 6.4 known and can be implemented as described in the book Bogdanovich M.I. and other Digital integrated circuits. Reference manual / M.I. Bogdanovich, I.N. Grill, VA Prokhorenko, V., Salima. - Mn.: Belarus, 1991. - s-431.

Schema ROM programs 6.2 known and described, for example, in the Handbook Perelman, B.L., Shevelev, I. Domestic chip and foreign counterparts. Guide / B.L. Perelman, I. Shevelev. - M.: NTC Microtech, 2001. - s-128.

Driver commands 6.5 can be implemented on the basis of the microcontroller, which are described, for example, in the Handbook of Trampert Century AVR-RISC microcontrollers / Trampert. - M: MK-Press, 2006. - s-221.

Generator CHIP signals 6.8 is designed to generate a sequence of rectangular pulses with a duty cycle of 2 and controlled within the specified limits of the bit-period. The device generator CHIP signals is known and described in the literature: Shapiro, D.N., Pain, A.A. fundamentals of theory of frequency synthesis / D.N. Shapiro, A.A. pain. - M.: Radio and communication, 1981. - p.113-121.

The buffer element 6.6 widely known and described in Horowitz, P., Winfield, X. / Art circuitry: TRANS. from English. - Ed. Sixth. M.: Mir, 2001. - p.114-119.

Electronic keys 6.9, 6.11, 11.11 described in Horowitz, P., Winfield, X. / Art circuitry: TRANS. from English. - Ed. Sixth. M.: Mir, 2001. - p.70-86.

The elements of constant memory 6.12, 6.13 known the basic device, which are described in the Perelman, B.L., Shevelev, I. Domestic chip and foreign counterparts. Guide / B.L. Perelman, I. Shevelev. - M.: NTC Microtech, 2001. - s-128.

Implementation of the logic element ILI 6.10, 11.2, see the reference manual Bogdanovich, M.I. and other Digital integrated circuits. Reference manual / M.I. Bogdanovich, I.N. Grill, VA Prokhorenko, V., Salima. - Mn.: Belarus, 1991. - p.á305-318.

Switch 6.15 intended for switching of signals input to the information input to the output under the action of the control address signal. Second input of the address, it is connected with the second output FC 6.5. In native mode, the device on the output switch 6.15 signal from the output element ILI 6.10, when receiving the address of the command Builder commands 6.5 switch 6.15 changes the current input. When you receive the command to repeat, the switch connects the output of RAM 6.16 with the second input of the modulator 6.14. When a request for repetition or request to increase/decrease the speed of transmission of additional data driver commands 6.5 gives the switch 6.15 command to connect the output of the ROM PR 6.2 to the second input of the modulator 6.14. The switch is a known device and is described in the manual Kharitonov VI lecture Notes and materials to prepare for certification testing in the discipline "Technology is an economic measurement and instrumentation". Part 2 / Vigorito. - M.: Moscow State Technical University, 2004. - p.71-89.

The code generator identification 6.17 intended for forming and issuing a special code sequences, depending on received from FC 6.5 commands. The node is an element of long-term memory, and the command address in the memory indicating the subject to read the information. Such devices are considered in the directory Perelman, B.L., Shevelev, I. Domestic chip and foreign counterparts. Guide / B.L. Perelman, I. Shevelev. -- M: NTC Microtech, 2001. - s-128.

Modulator 6.14 implementing signs of additional information received at the first input, the useful signal data supplied to the second input, the method amplitude manipulation of the ratio manipulation is not more than 0.15. The principles described in the Svirid, V.L. Design of microelectronic devices: Textbook. The manual for the course "micro-circuitry" / V.L. Svirid. - Mn.: BSUIR, 1994. - p.70-76.

The transmitting optical module 6.17 made according to GOST R 50989-96 and GOST R 50832-95, and provides electronoptical conversion method modulation of the pump current source of optical radiation.

The receiving optical module 11.1 provides an optoelectronic conversion, the selection signal errors on the second input is, performed according to standard GOST R 50989-96 and GOST R 50832-95.

Filter 11.6 designed to highlight the low-frequency component of the total electric signal. The low-frequency component of this signal is a signal for more data. The frequency filter is selected based on the maximum speed of the signal data. Digital low pass filter is a well known device and is implemented as specified in Rabiner, D., Gould, B., Theory and application of digital signal processing / L. Rabiner, B. Gould. - M.: Mir, 1978. - s-265.

The restorer pulse forms 11.7 designed to restore rectangular pulses after the filtering operation. Is a known device and is described in the monograph of Sharonov, A.V. reductants pulse signals / AV of Sharonov. - SPb.: Alexander-PRINT, 2003. - s-19.

The correlator 11.8 designed for decoding code sequence, transferring the bits of the signal data. On the main (first) input of the correlator receives a coded signal of additional data, the additional inputs are received reference signals coded sequences from ROM 6.12, 6.13, UPDI 6. The correlator 11.8 compares the signals at its inputs, decodes them and sends to the output. The option of constructing correlator is proposed on page 175 Klaus Schatzel. New Concept in Correlator Desin. Inst. Phys. Conf. Ser. No. 77,1985, in addition there is a satisfying description of the correlators in integrated circuits, such as VLSI correlator processor digital DCP32-035".

The additional data detector 11.9 is designed to convert the input signal to a unipolar type and additional data, is described in Horowit, P., Winfield, X. / Art circuitry: TRANS. from English. - Ed. Sixth. M.: Mir, 2001. - p.50-60.

Node equivalence 11.10 described in Bogdanovich, M.I. and other Digital integrated circuits. Reference manual / M.I. Bogdanovich, I.N. Grill, VA Prokhorenko, V., Salima. - Mn.: Belarus, 1991. - p.á305-318.

The decoder code recognition 11.12 designed for the analysis of additional data from a node equivalence 11.10, and the selection of them speckman, as well as the formation of the command-based disparities generated on the second output node equivalence 11.10 in case of discrepancy between the input sequences in at least one bit, the query command to repeat. All teams arrive in the driver commands 6.5 UPDI 6. Consider the node performs the operation of comparing the incoming binary sequence and the reference, if it matches a certain length generates a command, control FC 6.5, can be implemented as the standard logic elements (node equivalence and memory elements), and can the t to be implemented on the basis of the microcontroller (see Trampert Century AVR-RISC microcontrollers / Century Trampert. - M: MK-Press, 2006. - s-162).

Trigger 11.3 selects signal attachment. Signal errors and the signal from the first output of the receiving optical module 11.1 arrive at logical element ILI 11.2, the output of logic element 11.2 signal is applied to the trigger 11.3, the enable signal read which is the signal errors, thus implemented the required truth table. The trigger is a well-known device and is described in detail in the book Zeldin E.A. Triggers / EA Zeldin E.A. - Energoatomizdat, 1983.

The memory elements, which include EZ 6.3, the EPE 11.5 and RAM 6.16 known and described in the Perelman, B.L., Shevelev, I. Domestic chip and foreign counterparts. Guide / B.L. Perelman, I. Shevelev. - M.: NTC Microtech, 2001. - s-128.

The device operates as follows. The inputs of the recording stegano-pattern transmitting and receiving terminal device of the steganographic information transfer through the main optical path enters the steganographic key in binary form, which is written in UFS 5 and DPS 10. The input of the transmitting terminal served N transmitted digital multi-Protocol flow that arrives at the analyzer transmission protocols 1, the output of which information flows and the signal switching arrive at the device input terminal N multi-Protocol data flows and signals switching 2. Protocol analyzer 1 specifies the transmission speed of each of the multi-Protocol flow, generates a signal switching that maps each thread and the optical carrier. For informational inputs of the switch 3 are fed parallel to the N input digital information flows and the signal switching with UVV 2. Switch 3 converts an arbitrary input multi-Protocol stream ranked by speed transmission, in accordance with the signal switching. Sorting is carried out in accordance with the transmission rate with the expectation that more high-speed signal is transmitted to the shorter wavelength of the optical carrier. N sorted by technical transmission speed Multiprotocol information flows are served simultaneously on the N-channel buffer 4 and the signal-attachment 5. On the basis of the steganographic key steganographic algorithm, the structure of the container and protected information UIF 5 generates the address matrix attachments. In the matrix of attachments specified position pulses (logical units) spectral-clock sets of information sequences to be modified in connection with the transfer of protected information, signal switching, and masking noise sequence. N channel buffer 4 delays the information is haunted container sequence at a time, required to build an address matrix attachments and definitions addresses attachments with the accounting units of the signal-container. After a time delay N channel buffer 4 sends the clock sets in relevant UPDI 6, where the control pulses from the outputs of FDS 5, implements the matrix attachments, is the modulation of the respective pulses of the multi-Protocol flow signals protected information, signal switching and noise sequence. Describes the operation of the steganographic information transfer through the main optical path on the stages of implementation of operations 1-6 (6) method of the steganographic information transfer through the main optical path.

The protected information, the signal switching and noise sequence (in the General case, additional information or additional data signal) embedded in the signal-container (in the General case, the signal payload, see figure 4) as follows. At the first sign of UPDI 6 signal payload, which is supplied to the second input of the modulator 6.14 and entrance WH DD 6.1, which selects the clock rate of the input stream and passes the signal clock frequency at the first input of counter 6.4. To the second input of the counter signal clock frequency of additional data from WH DD 6.7, whose input is connected to the input dopolniteldnyh UPDI 6 and the input of the delay element 6.3. Counter estimates the ratio of the signals on the first and second inputs. The evaluation result is supplied to the first input of the shaper commands 6.5, which according to programs stored in ROM PR 6.2, issues a command from the first output on the generator CHIP signals 6.8, which generates a sequence of rectangular pulses with a duty cycle of 2 and throws them into the pulsing inputs ROM 6.12 and 6.13. Driver commands 6.5 on the basis of the received information and the program installed in the ROM programs 6.2 generates the appropriate commands. The source data for the driver teams are 6.5: the ratio of the frequencies of the information signals, the command repeat command to increase/decrease speed transmission. Driver commands 6.5 gives the following commands: changing the scaling factors of the controlled oscillator and the address control switch 6.15, as well as reading a block of information from the ROM PR 6.2, connected to the second input of FC 6.5. ROM 6.12 and 6.13 aktiruyte meanders generated by the generator CHIP signals 6.8. The additional data signal is supplied through a delay element 6.3, designed to provide the necessary time to perform the above operations evaluation multiplicity of frequencies and formation of teams, the buffer device 6.6. Buffer 6.6 is intended to increase load sposobnostyami delay elements 6.3. Further information additional data signal is supplied simultaneously to the inputs of the electronic control keys 6.9, 6.11. Keys 6.9, 6.11 differ in the potential positives, electronic key 6.9 opens when the intake unit, and the key 6.11 - zero. On switching the inputs of the keys 6.9 and 6.11 attached persistent memory (ROM) 6.12 and 6.13, respectively, containing the sequence encoding the signals 1 and 0 additional data. Switching outputs keys 6.9 and 6.11 connected to the element ILI 6.10, performs an integrating function. The output of logic element ILI 6.10 connected to RAM 6.16 and the first input switch 6.15. RAM 6.16 acts as a buffer intended for storage and temporary storage of incoming information and its subsequent delivery to the fourth input of the switch; the switch 6.15 commutes signal from the first input to the first output, which is connected to the first input of the modulator 6.14; after the modulation of the useful signal data signal data occurring in the modulator 6.14 is an electro-optical conversion in the transmitting optical module 6.18 and issuance of the optical signal at the output of UPDI 6 on a unique wavelength, defined for each pair of POM 6.18 Prom 11.1 selected technology division multiplexing wavelength. So is a function of all N the SOPS 6, fed at a given moment of time for more information. As a result, a group of optical signals having a form similar to that shown in figure 4. Due to the fact that the embedding of additional information is performed at each clock interval long sequences of ones and the pulse signal is a container that arrived on the decline (1-0 transition) pulse signal additional data may have a "step" (see 6-7 bars of the second information flow figure 4). Describes the operation of the steganographic information transfer through the main optical path at the stage of implementation of the investment of additional information 7 (6 for more details on this stage is depicted in Fig) method of the steganographic information transfer through the main optical path.

The output paths of the optical channel transmitters 61-6Nconnect to the input device combining spectral-spaced optical channels 7, usually performed in systems with spectral multiplexing based optical filters. The device 7 summarizes the N optical signals with different wavelengths (λ1, ..., λN)modulated on each step of the distribution of bits of additional information, in the group of linear optical signal, which is inserted in the optical path before the Chi line signal 8 1-8M+1(in the linear optical fiber). Describes the operation of the steganographic information transfer through the main optical path on the stages of implementation of operations 8-10 (6) method of the steganographic information transfer through the main optical path.

At the entrance of the receiving terminal after passing through the linear path 81-8M+1group linear signal is first exposed using UR 9, similar to the EE 7, but is included in the reverse direction, the division into N wavelength-separated optical channels, each of which is connected to the input of your Udidi 111-11N. In Updi 111-11Nis divided sub information and the container. Describes the operation of the steganographic information transfer through the main optical path on the stages of implementation of operations 1-4 (7) method of the steganographic information transfer through the main optical path.

The allocation of investments of the steganographic container is as follows. The optical signal corresponding Prom wavelength is fed to the input Udidi 11, the inlet of which is the entrance Prom 11.1. In Prom 11.1 happens optoelectronic conversion and allocation error signal, a first output connected to the input of the filter 11.6 and second inputs LAYE 11.2 and trigger 11.3, while the first input of PE 11.2 is outinen with the second output of the receiving optical module 11.1, from which signal errors. Output LAYE 11.2 connected to the first input of the trigger 11.3. The result LAYE 11.2 and trigger 11.3 is extracted from the total signal data coming from the trigger output 11.3 to the second input of the EPE 11.5 and entrance WH 11.4. Output WH 11.4 connected to the first input of the EPE 11.5. Adjustable delay element 11.5 normalizes the duration of the pulses under the influence of such pulses from WH 11.4 and delaying an output sequence on the time required for correlation analysis. Filter 11.6 emit low-frequency component representing the encoded additional data signal; the output of the filter 11.6 connected to the reducing agent in the form of pulses 11.7, which corrects the form after filtering (restores a rectangular shape); exit reductant in the form of pulses 11.7 connected to the first input of the correlator 11.8; on the second and third inputs of the correlator 11.8 connected to the second outputs of the ROM 6.12 and 6.13, UPDI 6, respectively. The task correlator is 11.8 comparison of code sequences at its inputs and conversion code sequences to the mind of additional data signal; the output of the correlator 11.8 connected to the input of the additional data detector 11.9, which restores the unipolar waveform, the output of the detector additional data 11.9 the points the user to the first input node equivalence 11.10. The second input node equivalence 11.10 and second input EK 11.11 connected to the input of the EPE 11.5. Node equivalence 11.10 compares the bit signals on their inputs, in the case that a generates an enable signal at the first input key 11.11 and the second input of CSD 11.12. Key 11.11 opens and allows passage of the signal from the output of the adjustable delay elements 11.5 on the output signal of the additional data Udidi 11 and the first input of the decoder code recognition 11.12. In case of discrepancy between the signals additional data were obtained by independent methods, the key 11.11't open, and the decoder code recognition 11.12 receives a signal on team building request for repetition. CSD 11.12 according to the signal determines whether the code up and ensures the formation of the corresponding commands to the third input FC 6.5, managing through the second output by the code generator identification 6.17 and switch 6.15 (input 2), for providing to the communication channel corresponding signals request a change speed transmission of additional data and other service signals. The team at the third input of the shaper commands 6.5 signal from the second input (connected to the ROM PR 6.2) is fed to the input GKO 6.17 and the second input switch 6.15. On command from the ROM PR 6.2 GKO 6.17 generates the appropriate command, which through the switch 6.15 transmitted to the first output mo is ulator 6.14. If coming from the RCD 11.12 the command includes a request for repetition, the GKO 6.17 generates a command to repeat the last block on which the switch connects the RAM 6.16 containing the latest transmitted data block and the first input of the modulator 6.14. Describes the operation of the steganographic information transfer through the main optical path in the implementation phase extraction of additional information 5 (7 for more details on this stage is depicted in Fig.9) method of the steganographic information transfer through the main optical path.

The output signals of the payload (container) with Udidi 111-11Nserved on N inputs of the switch 12, and the signals from the outputs additional data Udidi 111-11Ncome on N inputs UVS 10, which in accordance with the address matrix extract generated when the input stegano-graphic key cuts from the signal data noise sequence, intended to mask the fact of transfer of protected information; selects signal switching, which then passes into a special input switch 12; allocates and transmits to the recipient of the protected information. The switch 12 has input streams ranked by the transfer rate in the order of connection of terminal devices that implement specific transmission technology, which transmits Multiprotocol information flows in Uwiv 13, which is consistent electrical parameters with terminal devices connected to the Multiprotocol device outputs the steganographic information transfer through the main optical path. Describes the operation of the steganographic information transfer through the main optical path on the stages of implementation of operations 6-9 (7) method of the steganographic information transfer through the main optical path.

1. The way the steganographic information transfer through the main optical path, namely, that analyze the speed and transmission protocols, modulate radiation N channel optical transmitters, different optical wavelengths, the transmit signals of different digital channels on used working optical wavelengths in accordance with the distribution of the wavelength, the distribution of job lengths as follows: high-speed data streams sent by shortwave spectral channels and information flows with lower rates direct spectral channels with a longer wavelength, combine the spectral-spaced output optical signals of all N channel optical transmitters in an optical line group the signal is passed a group of optical linear linear optical signal is in the path, share in the receiving terminal group optical signal into N components on the basis of differences of the optical wavelengths, detects each optical component group signal, characterized in that on the transmission side accept and remember the steganographic key, accept the protected information, based on the steganographic key form algorithm attachments address matrix attachment signal in a multi-Protocol multi-channel optical signal (MOS), in accordance with the address matrix is the attachment of the protected information and signal switching in the position of the spectral-clock set, not used by the algorithm of the attachment position of the spectral-clock set modulate the masking noise M-sequences, impose on the pulse MMOS and transmit educated thus the total signal, reception, accept and remember the steganographic key that is identical to a key on the transmission, on the basis of the steganographic key form algorithm attachments address matrix extracting the signal that is identical to the address matrix attachment formed on the transfer, in accordance with the address matrix is the extraction of sensitive information and signal switching from multi-Protocol multi-channel optical signal, the position of the spectral-clock sets Multiprotocol multi-channel optical signal, not listed in the address table, restore to the level of the pulses, the protected information is passed to the recipient.

2. The method according to claim 1, characterized in that the attachment of the protected information, signal switching, and elements of the noise sequence is as follows: the signal of the protected data is converted into code consisting of sequences encoded signal attachment, the signal-attachments transmit a signal in which the logical state 1 result in compliance with the code sequence, and the other logical state of a lead in accordance inverted code sequence, each code sequence consists of several chips {CHIP} and has a much lower frequency chip (fCHIP)than the frequency of the bits MMOS encoded signal attachment, which has a smaller amplitude than MMOS, and the allocation of protected information, signal switching and noise sequence is as follows: the signal-attachment, which is marked on the receive correlation method, is compared with the signal-attachment selected from MMOS and signal errors of the receiving optical module, in the case of differences of signals investments allocated independent methods, form the team perestroka at which the transmitter generates and transmits a signal PE is esposa, at the same time as signal-attachments transmit consisting of several bits of an identification code representing information about repeating the previous block data to be protected, or to increase/decrease the transmission speed of the protected data.

3. The device of the steganographic information transfer through the main optical path containing the transmitting terminal, the linear optical path, a receiving terminal, the transmitter terminal comprises a Protocol analyzer, the input device at the terminal N multi-Protocol flow of information and the signal switching switch, a device combining spectral-spaced optical channels, with N multi-Protocol information flows connected to a Protocol analyzer, the information outputs digital channels through which the input device to the terminal N multi-Protocol flow of information and the switching signals are connected to the N to the information inputs of the switch, the signal switching is connected to the switching input of the switch, the output device combining wavelength-separated optical channels connected to the input of a linear optical path, the output of the linear optical path connected to the receiving terminal, which contains a device for separating wavelength-separated optical channels, the switch device and istwo output from terminal N multi-Protocol data flows, the yield of linear optical path connected to the inlet of the separation device wavelength-separated optical channels, N informational outputs of the switch are connected to N inputs of the output device of the terminal N multi-Protocol flow of information, and N outputs which are the outputs of the multi-Protocol information flow device, wherein transmission of the inputted signal-investments and included in the transmitting terminal of the buffer into N channels, N devices for the transmission of additional information, the transmitting optical module operating at a spaced wavelengths, at the reception - N devices receive additional information included in the receiving terminal, and the device the selection signal attachment, and N-outputs of the switch are connected through the buffer into N channels of input payload N devices for the transmission of additional information, with the input of additional data signals which are connected to N outputs of the signal-attachments, in addition, the N outputs of the switch are connected to the inputs of the signal attachment, input signal switching, which is connected with the corresponding output of the input device to the terminal N multi-Protocol flow of information and the switching signals, the outputs of the N transmitting devices will complement the school of information connected to respective inputs of a device combining spectral-spaced optical channels, in the information input device signal-attachment signaled protected information, and through the key input is written to the steganographic key, N outputs of the device separation between the spectral-spaced optical channels are connected with the inputs of the N devices receive additional information, outputs the additional data signals are connected to N inputs of the device selection signal, input, and output signals of the payload is connected to N inputs of the switch, the output signal switching device selection signal attachment is connected with the corresponding input of the switch, the information output device selection signal attachment is the output signal of protected information, and through the key input is written to the steganographic key.

4. The device according to claim 3, characterized in that each of the N devices for the transmission of additional information includes highlighters clock frequency useful data and additional data, a permanent storage device programs, delay element, counter, driver commands, buffer, generator CHIP signals, electronic keys, the logical element ILI, permanent storage devices, modulator, switch, random access memory, the code generator identification, the transmitting optical module, these elements are connected with edusim follows: input selector clock frequency of the payload is connected to the second input of the modulator and an input of the useful data transmission device additional information the output of selector clock frequency payload connected to the first input of the counter, a second input which, in turn, is connected to the selector clock frequency of additional data, an input connected to the input of the delay element and an input of additional data device for the transmission of additional information, the output of the counter is connected to the first input of the shaper teams, with the second input connected to the output of the DC storage device and to the third input of the shaper teams connected to the output of the decoder code recognition device receiving additional information, the first output driver commands connected to the input of generator CHIP signals, the output of which is connected to the address inputs of two permanent storage devices, the second output driver commands is connected to the input of the code generator is up and the second input switch, the third input of which is connected to the output of the code generator is up, the output of delay element connected to the input buffer, the first output of which is connected to the first input of the first electronic switch and the second output to the first input of the second electronic key, the outputs of the first and second electronic switches connected to the first and second input respectively of the logical element ILI, the output of which is connected to the input of the operas the efficient storage device and the first input of the switch, the output of the first constant storage device connected to a second input of the first electronic switch and the second input of the correlator device receiving the additional information, a third input connected to the second input of the second electronic switch and the output of the second constant storage unit, the output of the operational storage device is connected to the fourth input of the switch, the output of which is connected to the first input of the modulator, the output of which is connected with the transmitting optical module whose output is the output device for the transmission of additional information, each of the N devices receive additional information includes receiving optical module, the logical element ILI, the decoder code recognition, electronic key, the node equivalence, filter the additional data detector, the reducing agent in the form of pulses, the correlator, the selector clock frequency, adjustable delay element, trigger, these elements are connected as follows: input receiving optical module is an input device receiving additional information, the first output of the receiving optical module is connected to the input of the filter, the second inputs of the logic element ILI and trigger and an output signal of the payload device receiving additional information, the second output is niemnogo optical module connected to the first input of the logical element ILI, the output of which is connected to the first input of a trigger, the output of which, in turn, is connected to the input of the selector clock frequency and the second input of the adjustable delay elements, the output of selector clock frequency connected to the first input of the adjustable delay elements, the output of which is connected with the second inputs of the electronic key and the node equivalence, the yield of the latter is connected with the second input of the decoder code identification and a first input of the electronic switch, the output of the filter connected to the input reductant in the form of pulses, the output of which is connected to the first input of the correlator, the output of the latter is connected to the input of the additional data detector, the output of which is connected to the first input node equivalence, the output of the electronic switch connected to the first input of the decoder code recognition and is the output signal of the additional device data receiving additional information.



 

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3 cl, 4 dwg, 3 tbl

FIELD: information technologies.

SUBSTANCE: device for fiber-optic communication system with wavelength-division multiplexing 2N channels where N is integer and N≥2 with spectral interval between adjacent channels Δv0 for performing input/output of 2M channels where M is integer and 1≤M<N, has one entering port, one exiting port, 2M output ports, 2M input ports and contains: controlled optical input/output multiplexer, optical demultiplexer of "1×2M" configuration, optical multiplexer of "2M×1" configuration and controller. This device can be used as multichannel controlled or multichannel reconfigurable optical input/output multiplexer.

EFFECT: performing input and output of multiple channels from optical signal with channel wavelength-division multiplexing using controlled dynamic filtering elements capacity restructuring.

13 cl, 16 dwg, 3 tbl

FIELD: physics.

SUBSTANCE: multichannel controlled input/output optical multiplexer for fibre-optic communication systems with wavelength-division multiplexing of 2N channels, where N is an integer and N≥2, optical frequencies of which can be adjusted at constant spectral interval Δν0 between neighbouring channels, for input/output of 2M channels, where M is an integer and 1≤M<N, has a controlled optical demultiplexer with 1×2M configuration, controlled optical multiplexer with configuration 2M×1, 2M controlled input/output optical multiplexers and a controller for controlling adjustment of spectral characteristics of the said demultiplexer, multiplexer and 2M input/output multiplexers.

EFFECT: provision for given transmission capacity of filtering devices in the multiplexer with possibility of input-output of channels with given frequencies through control of spectral characteristics of these filtering devices.

11 cl, 15 dwg, 3 tbl

FIELD: physics.

SUBSTANCE: controlled optical demultiplexer includes a multi-stage structure of optical filters, made with possibility of controlled adjustment of transmission coefficients, as well as a controller for controlling adjustment of transmission coefficients of optical filters. The optical filters used are single-stage asymmetrical Mach-Zehnder interferometres and/or two-stage asymmetrical Mach-Zehnder interferometres and/or multi-stage asymmetrical Mach-Zehnder interferometres. Electro- and thermo-optical phase shift devices serve for controlling adjustment of transmission coefficients of the optical filters. The multiplexer can made using integrated optical technology in form of a monolithic solid-state device.

EFFECT: demultiplexing channels in fibre-optic communication system with wavelength-division multiplexing of channels, optical frequencies of which can be adjusted at constant spectral interval between neighbouring channels Δv.

7 cl, 9 dwg, 2 tbl

FIELD: physics, communication.

SUBSTANCE: invention is related to optical communication equipment and may be used for emphasis of transmitted signals in channels of multiplexed signals on transmission route with points of inlet and/or outbranching, which considers relative reduction of signal/noise ratios between transmitted signals of different categories or groups of channels, i.e. express-channels and channels of outbranching or inbranching, or outbranching/inbranching. For this purpose average signal capacities of different channel groups are established relative to each other in order to achieve specified ratios of signal-noise in appropriate groups. Moreover, ratios of signal-noise are balanced inside group of channels in points of their completion. Control protocols are described for control of emphasis steps. Method is also applicable for point-to-point connections, and also for transparent optical networks.

EFFECT: higher noise immunity at lower ratios of signal/noise.

29 cl, 4 dwg

FIELD: information technologies.

SUBSTANCE: specified invention relates to the optical interconnection and is intended for traffic protection if completely optical net. Technology of compact submultiplexing along length of waves is applied in method and device. Submultiplexing segments number, on which system waves length are divided, is defined according current conditions of protected and unprotected traffic distribution in network. Specified device contains, at least, one wave composer from each point side and optical protection module and executed protection function of submultiplexing segments optical level, meets traffic requirements with multi-access, optimises usage of system recourses.

EFFECT: system capacity improvement with satisfying fractional traffic protection.

6 cl, 11 dwg

FIELD: optical communication systems.

SUBSTANCE: proposed demultiplexer that has waveguide layer, geodetic lens optically coupled with single-mode input optical fiber and with dispersion component in the form of ordered waveguide diffraction grating, and output geodetic lens optically coupled with dispersion component and with output waveguides, all formed on single substrate, is characterized in that all channel waveguides of dispersion component are equal in length and each channel waveguide has two sections of different thickness, length difference of respective sections for any pair of adjacent channel waveguides being constant value.

EFFECT: enhanced useful-signal optical power due to reduced precision of dispersion component manufacture; reduced crosstalk channel noise due to reduced regular and random phase errors.

1 cl, 2 dwg

FIELD: optics.

SUBSTANCE: integral optical circuit has a group of optical amplifiers, formed in integral optical circuit, and ordered wave duct grid, formed in integral optical circuit and connected to group of optical amplifiers, group of wave duct elements connected to outputs of aforementioned group of optical amplifiers, while aforementioned ordered wave duct grid has star-shaped branch element, connected to group of wave duct elements. Group of optical amplifiers and ordered wave duct grid are made on basis of silicon oxide.

EFFECT: improved power of optical signal, simplified assemblage and lower costs.

2 cl, 7 dwg

FIELD: multichannel optical communications, possible use for transmitting and receiving signals.

SUBSTANCE: in device monochromator system is augmented with transmitting module and receiving module, which contain M protected channels for communication of transmitting side and receiving side, N working channels, switching device, which in accordance to switching request from monochromator system switches the signal from aforementioned working channel to aforementioned protecting channel, or switches signal on aforementioned protective channel back to aforementioned working channel, while M and N are natural numbers and M<N.

EFFECT: realization of independent protection mechanism for monochromator and decreased consumption of optical wave length resource.

2 cl, 6 dwg

FIELD: optical communication systems.

SUBSTANCE: proposed demultiplexer that has waveguide layer, geodetic lens optically coupled with single-mode input optical fiber and with dispersion component in the form of ordered waveguide diffraction grating, and output geodetic lens optically coupled with dispersion component and with output waveguides, all formed on single substrate, is characterized in that all channel waveguides of dispersion component are equal in length and each channel waveguide has two sections of different thickness, length difference of respective sections for any pair of adjacent channel waveguides being constant value.

EFFECT: enhanced useful-signal optical power due to reduced precision of dispersion component manufacture; reduced crosstalk channel noise due to reduced regular and random phase errors.

1 cl, 2 dwg

FIELD: information technologies.

SUBSTANCE: specified invention relates to the optical interconnection and is intended for traffic protection if completely optical net. Technology of compact submultiplexing along length of waves is applied in method and device. Submultiplexing segments number, on which system waves length are divided, is defined according current conditions of protected and unprotected traffic distribution in network. Specified device contains, at least, one wave composer from each point side and optical protection module and executed protection function of submultiplexing segments optical level, meets traffic requirements with multi-access, optimises usage of system recourses.

EFFECT: system capacity improvement with satisfying fractional traffic protection.

6 cl, 11 dwg

FIELD: physics, communication.

SUBSTANCE: invention is related to optical communication equipment and may be used for emphasis of transmitted signals in channels of multiplexed signals on transmission route with points of inlet and/or outbranching, which considers relative reduction of signal/noise ratios between transmitted signals of different categories or groups of channels, i.e. express-channels and channels of outbranching or inbranching, or outbranching/inbranching. For this purpose average signal capacities of different channel groups are established relative to each other in order to achieve specified ratios of signal-noise in appropriate groups. Moreover, ratios of signal-noise are balanced inside group of channels in points of their completion. Control protocols are described for control of emphasis steps. Method is also applicable for point-to-point connections, and also for transparent optical networks.

EFFECT: higher noise immunity at lower ratios of signal/noise.

29 cl, 4 dwg

FIELD: physics.

SUBSTANCE: controlled optical demultiplexer includes a multi-stage structure of optical filters, made with possibility of controlled adjustment of transmission coefficients, as well as a controller for controlling adjustment of transmission coefficients of optical filters. The optical filters used are single-stage asymmetrical Mach-Zehnder interferometres and/or two-stage asymmetrical Mach-Zehnder interferometres and/or multi-stage asymmetrical Mach-Zehnder interferometres. Electro- and thermo-optical phase shift devices serve for controlling adjustment of transmission coefficients of the optical filters. The multiplexer can made using integrated optical technology in form of a monolithic solid-state device.

EFFECT: demultiplexing channels in fibre-optic communication system with wavelength-division multiplexing of channels, optical frequencies of which can be adjusted at constant spectral interval between neighbouring channels Δv.

7 cl, 9 dwg, 2 tbl

FIELD: physics.

SUBSTANCE: multichannel controlled input/output optical multiplexer for fibre-optic communication systems with wavelength-division multiplexing of 2N channels, where N is an integer and N≥2, optical frequencies of which can be adjusted at constant spectral interval Δν0 between neighbouring channels, for input/output of 2M channels, where M is an integer and 1≤M<N, has a controlled optical demultiplexer with 1×2M configuration, controlled optical multiplexer with configuration 2M×1, 2M controlled input/output optical multiplexers and a controller for controlling adjustment of spectral characteristics of the said demultiplexer, multiplexer and 2M input/output multiplexers.

EFFECT: provision for given transmission capacity of filtering devices in the multiplexer with possibility of input-output of channels with given frequencies through control of spectral characteristics of these filtering devices.

11 cl, 15 dwg, 3 tbl

FIELD: information technologies.

SUBSTANCE: device for fiber-optic communication system with wavelength-division multiplexing 2N channels where N is integer and N≥2 with spectral interval between adjacent channels Δv0 for performing input/output of 2M channels where M is integer and 1≤M<N, has one entering port, one exiting port, 2M output ports, 2M input ports and contains: controlled optical input/output multiplexer, optical demultiplexer of "1×2M" configuration, optical multiplexer of "2M×1" configuration and controller. This device can be used as multichannel controlled or multichannel reconfigurable optical input/output multiplexer.

EFFECT: performing input and output of multiple channels from optical signal with channel wavelength-division multiplexing using controlled dynamic filtering elements capacity restructuring.

13 cl, 16 dwg, 3 tbl

FIELD: physics.

SUBSTANCE: invention is designed for fibre optic lines of optical ATS (OATS) for broadband city and inter-city video-telephone, multimedia and telephone communication. The multiplexing device has an optical channel on several repeatedly used prisms which is common for all or for a large number of fibre optic lines of city and intercity OATS. In a subscriber access system with capacity of up to 80000 channels, one device will multiplex into a main line with average density of up to 500-1000 channels from terminal lines with low density Δλ=1 nm, and a terminal device will multiplex into a line with low density of up to 50 channels from subscriber terminals.

EFFECT: design of optical multiplexing devices which are easy to adjust to any range from visible to infrared waves and to any wavelength in that range.

3 cl, 4 dwg, 3 tbl

FIELD: physics.

SUBSTANCE: controlled optical multiplexer includes a multiple-step structure of filters having elements for controlled adjustment of transfer constants. The optical filters used are asymmetrical Mach-Zehnder interferometres: single-stage and/or two-stage, and/or multistage. Electro-optical or thermo-optical phase-shift devices serve for controlled adjustment of transfer constants of the optical filters. The multiplexer can be made on integrated-optical technology in form of a monolithic solid-state device.

EFFECT: controlled multiplexing of channels in the fibre optic communication system with wavelength-division multiplexing of channels, whose optical frequencies can be adjusted for constant spectral interval neighbouring channels Δν.

7 cl, 9 dwg, 2 tbl

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