Optical subtracting nano device

FIELD: physics, computer facilities.

SUBSTANCE: offered invention concerns computer facilities and can be used in optical information processing devices. The offered optical subtracting nano-device contains an input optical Y-splitter, a radiant of the constant optical signal, two optical nano-fiber N-output splitters, two target optical nano-fiber a Y-splitter, two input optical nano-fiber couplers, two optical N-input nano-fiber couplers, optically interfaced among themselves in appropriate way, and two telescopic nanotubes - interior and exterior one.

EFFECT: solution of a problem of subtraction both coherent, and incoherent optical signals with speed, potentially possible for optical processor plans, and also a problem ofnanosized device implement.

1 dwg

 

The invention relates to computer technology and can be used in optical devices for information processing in the development and creation of optical computers and radio devices.

The known device subtracting the optical signal is coherent analog optical processor comprising a light source, consecutive optical waveguides and optical filters [Akaev A.A., Maiorov S.A. Optical methods of information processing. - M.: Higher. HQ., 1988. - 237 S.: ill. str].

The disadvantages of this device are able subtracting the only coherent optical signals when forming only the modulus of their difference, and the impossibility of implementation in nanoscale execution.

The closest technical performance of the proposed device is an optical subtractive device containing the input optical splitter [Patent No. 2103721, Russia, 1998. Device for subtracting the optical signals / Sokolov S.V. and others].

The disadvantages of this device are the complexity and the impossibility of implementation in nanoscale execution.

The claimed device is aimed at solving the problem of subtraction as coherent and incoherent optical signals performance, potentially allow for about the political processor circuits, as well as tasks nanoscale performance of the device.

The task occurs in the development and creation of optical computing nano-machines or receiving-transmitting nano-devices for handling information in tera - and gigahertz ranges.

The claimed device is based on optical nanofibers, options technical performance are described in [Optics of nanostructures. / Edited Avedore: SPb. "Nedra", 2005; J.R. Krenn, A. Dereux, J.C. Weeber, et al. Squeezing the optical near-field zone by plasmon coupling of metal nanoparticles. Physical Review Letters, 1999, 82, 12, 2590], and telescopic nanotubes, which is a pair nested in one another nanotubes [Multiwalled Carbon Nanotubes as Gigahertz Oscillators / Quanshui Zheng, Qing Jiang // Phys. Rev. Lett. 88, 045503, 28 January, 2002].

The invention consists in that the device comprises a source of constant optical signal, the input optical this nanofiber Y-splitter, two optical this nanofiber N-output splitter, two output optical this nanofiber Y-splitter, two input optical this nanofiber consolidator, two optical N-input this nanofiber consolidator, two telescoping nanotubes - both internal and external inputs of the device are first input of the first input optical this nanofiber of the multiplexer and the first input of the second input optical nanocolumn is the first unifier, and between the outputs of both input this nanofiber optical combiners are telescoping nanotube axis distribution of output optical signals, the outputs of the device are the first output of the first output optical this nanofiber Y-splitter and the first output of the second output optical this nanofiber Y-splitter, the output of the DC optical signal connected to the input of the input optical this nanofiber Y-splitter, a first output of which is connected to the input of the first optical this nanofiber N-output splitter whose outputs are optically connected with the inputs of the first optical this nanofiber N-input multiplexer, and the second output of the input optical this nanofiber Y-splitter connected to the input of the second optical this nanofiber N-output splitter whose outputs are optically connected with the inputs of the second optical N-this nanofiber input of the multiplexer, the output of the first optical this nanofiber N-input multiplexer connected to the input of the first output optical this nanofiber Y-splitter, and the output of the second optical this nanofiber N-input multiplexer connected to the input of the second output optical this nanofiber Y-splitter, the second output of the first optical output is novologinovo Y-splitter connected to the second input of the second input optical this nanofiber consolidator, and the second output of the second output optical this nanofiber Y-splitter connected to the second input of the first input optical this nanofiber consolidator.

The drawing shows a functional diagram of the optical subtractive nanodevices.

The device consists of a source of constant optical signal 1 input this nanofiber optical Y-coupler, 21two optical this nanofiber N-output splitters 3i,i=1,2, two output optical this nanofiber Y-splitters 2i,i=2,3two input this nanofiber optical combiners 5i,i=1,2two optical N-input this nanofiber combiners 6i,i=1,2two telescoping nanotubes 4i,i=1,2(41the inner nanotube, 42- outer nanotube).

The input devices are the first input of the first input optical this nanofiber consolidator 51(IA) and the first input of the second input optical this nanofiber consolidator 52(IB). The outputs of the device are the first output of the first output this nanofiber optical Y-coupler, 22(IA-IB) and the first output of the second output this nanofiber optical Y-coupler, 23(IB-IA).

The output of DC) the ski signal 1 is connected to the input of the input optical this nanofiber Y-splitter 2 1the first output of which is connected to the input of the first optical this nanofiber N-output Y-splitter 31and a second output connected to the input of the second optical this nanofiber N-output Y-splitter 32. The optical outputs this nanofiber N-output Y-splitter 31optically connected with the optical inputs this nanofiber N-input multiplexer 61and outputs this nanofiber optical N-output Y-splitter 32optically connected with the optical inputs of the N-input of this nanofiber unifier 62.

Telescoping nanotubes 41, 42located between the outputs of the first and second input this nanofiber optical combiners 51and 52on-axis distribution of the output optical signals. Under the influence of the pressure difference of the light fluxes (the difference of optical power 1-5 watt creates a pressure difference 5-15 NN), the inner nanotube 41will move in the direction of the optical flow with less intensity (it should be borne in mind that the minimum required pressure to move the nanotube is attentton [Multiwalled Carbon Nanotubes as Gigahertz Oscillators / Quanshui Zheng, Qing Jiang // Phys. Rev. Lett. 88, 045503, 28 January, 2002]).

The average (initial) position of the inner nanotube 41tears optical communication between o the DAMI first N-output this nanofiber optical splitter 3 1and the inputs of the first N-input optical this nanofiber consolidator 61and optical communication between the outputs of the second N-output this nanofiber optical splitter 32and the inputs of the second N-input optical this nanofiber consolidator 62.

The output of the first optical this nanofiber N-input multiplexer 61connected to the input of the first output this nanofiber optical Y-coupler, 22and the output of the second optical this nanofiber N-input multiplexer 62connected to the input of the second output this nanofiber optical Y-coupler, 23. The second output of the first output this nanofiber optical Y-coupler, 22connected to the second input of the second input optical this nanofiber consolidator 52and the second output of the second output this nanofiber optical Y-coupler, 23connected to the second input of the first input optical this nanofiber consolidator 51.

The device operates as follows.

From the output of the DC optical signal 1 signal with an intensity of 2·N·K usled (N - number of outputs N output this nanofiber optical splitters 31and 32), after passing through the input optical this nanofiber Y-splitter 21(and decreased in two of the Aza intensity), arrives at the input N-output this nanofiber optical splitters 31and 32with each output of which is taken constant optical signal with intensity K usled

Before submission to the inputs of IAand IBoptical signals, the device is in the original (initial) state of the inner nanotube 41is in the middle (original) position.

Let the inputs of the device "IAand IB" submitted optical signals with intensities IAand IBthen on the inner nanotube 41there will be the difference of light pressure F1and F2proportional to the intensities of the light fluxes on the outputs of this nanofiber input optical combiners 51and 52:

Fj=ZIj.

For definiteness, let's agree that the intensity of the optical signal IA>IB. Then the inner nanotube 41from the middle position will move to the right, the intensity of light at the output of the first N-input optical this nanofiber consolidator 61will start to increase in proportion to the magnitude of the displacement "X" of the inner tube 41. Since the length of the right and left sides of the inner tube 41are the units of microns, while the diameter of the optical nanofiber - units of nanometers, the change Majesty the us move "X" for clarity, the following discussion can be considered continuous (discrete character change "X" makes no fundamental restrictions to the principle of the device) - the intensity of light at the output of the first N-input optical this nanofiber consolidator 61will be equal to K·X" (in this case the intensity of the light flux on the optical output of this nanofiber unifier 62will still be equal to zero). Optical signal with intensity K·X" goes to the input of the first output this nanofiber optical Y-coupler, 22where, divided into two passes to the output device "IA- IB" and to the second input of the second input optical this nanofiber consolidator 52. Optical signal with intensity K·X/2" at the second input of the second input optical this nanofiber consolidator 52generates a negative feedback signal interfering with the input signal IB) movement of the inner tube 41right - its speed decreases, the change in the magnitude of the displacement "X" is slowing down.

At the end of the transition process (at the time of stop of the internal nanotubes 41) the magnitude of the displacement "X" will be equal to

X=2·Z(IA-IB)/K.

(Transition time is determined by the mass of the inner tube 41(≈10-15-10-16d)the force of friction as it moves (≈10-9n), the intensity of the "K" constant optical signal intensities I and IBthe input optical signals and is ≈10-9-10-10).

Thus, at the output device "IA-IB" a signal is generated, the intensity of which is proportional to (Z-factor) of the difference of the intensities submitted optical signals (the sign of the difference is determined by the corresponding output, which is formed by the output signal).

Similarly, there is a process of subtracting the optical signals when the intensity(movement of the inner tube 41when this happens already to the left).

The simplicity of this optical subtractive device and the possibility of nanoscale performance make it very promising for the development and creation of optical computing nano-machines and the transmission and reception of nanodevices.

Optical subtractive nanostructure containing the input optical Y-coupler, characterized in that it introduced a source of constant optical signal, two optical this nanofiber N-output splitter, two output optical this nanofiber Y-splitter, two input optical this nanofiber consolidator, two optical N-input this nanofiber consolidator, two telescoping nanotubes - both internal and external inputs of the device are first input of the first input optical N. novologinovo of the multiplexer and the first input of the second input optical this nanofiber consolidator, and between the outputs of both input this nanofiber optical combiners are telescoping nanotube axis distribution of output optical signals, the outputs of the device are the first output of the first output optical this nanofiber Y-splitter and the first output of the second output optical this nanofiber Y-splitter, the output of the DC optical signal connected to the input of the input optical this nanofiber Y-splitter, a first output of which is connected to the input of the first optical this nanofiber N-output splitter whose outputs are optically connected with the inputs of the first optical this nanofiber N-input multiplexer, and the second output of the input optical this nanofiber Y-splitter connected to the input of the second optical this nanofiber N-output splitter whose outputs are optically connected with the inputs of the second optical N-this nanofiber input of the multiplexer, the output of the first optical this nanofiber N-input multiplexer connected to the input of the first output optical this nanofiber Y-splitter, and the output of the second optical this nanofiber N-input multiplexer connected to the input of the second output optical this nanofiber Y-splitter, the second output of the first optical output is novologinovo Y-splitter connected to the second input of the second input optical this nanofiber consolidator, and the second output of the second output optical this nanofiber Y-splitter connected to the second input of the first input optical this nanofiber consolidator.



 

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