Optical element

 

The invention is used in fiber-optic communication lines (FOCL). The optical element includes a fiber optic waveguide and the branch is made of a transparent material. As a branch used cvetovodami plot, made in the shell of fiber-optic waveguide. Directly at the exit svetootdacha site hosted photodiode sensor with adjustable gain. Fiber-optic waveguide can be fixed on a solid substrate. Along the length of the fiber-optic waveguide may be made of at least the second cvetovodami area, equipped with a photodiode. Each photodiode can be equipped with a separate amplifier. Provided the ability to control the efficiency of light transmission of power from one waveguide to another. 3 C.p. f-crystals, 1 Il.

The invention relates to optoelectronics and can be used in the processing of optical information from the optical fiber measuring networks.

Known optical element made in the form of a set of diffraction gratings, which are in the form of a flat holograms formed on the surface of the optical media. This optionsmaklarna neural system output processing of fiber-optical measuring network. -Letters to journal of technical physics. - 1999. - So 25. - Vol.6. - S. 65-70).

However, the practical manufacture of such an optical element has one drawback, namely its production inevitably requires a "wet" photochemical processing of photographic materials that require special skills and conditions for the sale.

Also known is an optical element including the optical waveguide and the branch is made of translucent material (see A. M. of Andriesh, Y. A. Bykov, Y. N. Kolchina, centuries of Sexton and B. L. Smirnova. Investigation of the optical fibers from As2S3for devices matching planar and cylindrical waveguides, W-l Quantum electronics, 9, 1, 1982).

The disadvantage of this device is relatively narrow functional range, allowing its use only as a device matching and does not allow its use as an optical element of the matrix connection, also the inability to control the transmission efficiency of the light power from one waveguide to another.

The task, which directed the claimed solution is formulated as providing the possibility of using the device as an optical element Matri is the made of translucent material, characterized in that the branch used cvetovodami plot, made in the sheath of the optical waveguide directly to the output svetootdacha site hosted photodiode sensor with adjustable gain. In addition, the optical waveguide is fixed on a solid substrate. In addition, the length of the optical waveguide has at least two cvetovodami area, equipped with photodiodes. In addition, each photodiode is provided with a separate amplifier.

Comparative analysis of the characteristics of the claimed solution and signs known analogues and prototype shows that the claimed device meets the criterion of "novelty."

Given in the characterizing part of the claims signs solve the following functional tasks.

Sign in as a branch used cvetovodami plot, made in the sheath of the optical waveguide provides the possibility of collecting optical energy from the optical fiber without the use of additional (intermediate) nodes and devices.

The sign "directly on the output svetootdacha site hosted photodiode of the photodetector" pack is the computer.

Signs pointing to the possibility of regulation of the gain of the photodetector", provide the ability to control the magnitude of an electrical signal for changes in the efficiency of radiation output from the optical fiber and, thus, provides a wide range of different devices with different performance parameters of the output radiation with the same structural parameters, "components", which collected these devices. This enables the organization of work of the claimed device as an optical element of the matrix of relations. Thus, by adjusting the gains of the photodetectors, it is possible to change the coefficients ties optical matrix relations and thereby it is possible to arrange the neural system which optical signals optical fiber information system will provide not only the restoration of the physical characteristics of the fields, but will allow us to adjust the parameters of its work under changing conditions or other recovery tasks. The proposed solution allows for simple elemental base to produce a direct alignment of optical radiation passing through FOIL, with electrost creating the neural system.

The sign of the third paragraph of formula enables independent adjustment of the parameters of the elements of the matrix of relations.

The claimed device is illustrated in the drawing.

The drawing shows: the core of the fiber-optic waveguide (fiber) 1, which is given to optical radiation, cvetovodami section 2 in the sheath of the fiber through which this radiation is given, the substrate 3, the photodiode 4. In addition, in the drawings shown luminous flux 5, amplifier 6, an analog-to-digital Converter (ADC) 7, PC 8, line feedback amplifier 9 6.

As fiber-optical waveguide (fiber) 1 uses a waveguide of known construction, the length of which is specified specific technical conditions, such as svetootdacha section 2 in the sheath of the optical fiber 1 can be used, for example, areas where the removed portion of the sheath of the fiber. The cross-sectional shape of this plot is not the determining parameter, the main thing is that the plane of the cross section solid angle of the output radiation was not more than the input aperture of the photodiode 4. In practice cvetovodami areas 2 formed in the form of cuts in the shell fibers, removing part of it, for example, madrilenian constant contact conditions light guiding plane svetootdacha section 2 and svetoprinimayuschego the surface of the photodiode 4.

As the photodiode 4, the amplifier 6, the ADC 7, PC 8, and line feedback amplifier 9 6 used devices of known construction, technical characteristics that ensure the health system, as part of which used the claimed device.

The claimed device operates as follows.

Luminous flux is introduced into the optical waveguide 1 through the inlet end face and extends over him, Bouncing off walls, to svetootdacha section 2, where the shell of the waveguide removed. With the passage of this section of part of the light flux 5 "leaves" through him in the photodiode of the photodetector 4. The signals from each of the photodiodes 4 are served on your amplifier 6 and then to the ADC input channel 7. The gain photodetectors are controlled by the generated signals of the error from the output of the computer 8. Thus, by adjusting the gains of the photodetectors, it is possible to change the coefficients ties optical matrix relations and thus optical signals WIPO to produce not only the restoration of the physical characteristics of fields and promptly correct the work of the neural system under changing conditions or to address the. the ith to the optical fiber 1 other cvetovodami parcel 2 described process is repeated.

The proposed device can perform the function of the optical element of the matrix of relations. Combining the output radiation from cvetovodami sections 2 may be used to execute the vector-matrix multiplication of the incoming optical signals of the optical elements of the matrix of relations. Thus, it is possible to implement all-optical neural network.

Claims

1. The optical element includes a fiber-optic waveguide and the branch is made of translucent material, characterized in that the branch used cvetovodami plot, made in the shell of fiber-optic waveguide, directly to the output svetootdacha site hosted photodiode sensor with adjustable gain.

2. The optical element according to p. 1, characterized in that the optical waveguide is fixed on a solid substrate.

3. The optical element according to p. 1, characterized in that the length of a fiber-optical waveguide is made of at least two cvetovodami plot, where is Iletisim.

 

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SUBSTANCE: the manufacturing mode is in plotting drops of polymerized substance on the end-face plane of the fiber, radiation of the plotted drop with a source of light for realization light photo polymerization. At that before exposure they choose one or several desired modes subjecting the optical fiber to mechanical strains, at the stages of plotting the drop and radiation they execute control and management of the form and the sizes of the peak, before the radiation stage they hold out the mixture at the given temperature for achieving viscosity of the mixture which allows to get the needed height of the drop, regulate duration of exposure and/or intensity of the light for regulating the end radius of the curvature of the peak.

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