RU2313117C1 - Optical reverse counter - Google Patents

Abstract

FIELD: computer engineering.

SUBSTANCE: optical reverse counter contains n identical counting cells, each one of which consists of: optical Y-splitters, optical uniting devices, optical threshold devices on basis of optically connected wave conduits, optical delay line and optical dividers.

EFFECT: ensured counting of impulses with possible reversion.

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Description

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

The closest to the technical implementation of the proposed device is an optical counter containing an optical branch of the account, branch recording, an optical bistable element, a feedback branch, an optical amplifier, an output branch, a discharge branch [Sokolov SV, Shevchuk PS, Babkin S.V., Pankratov V.A. Promising information processing and protection devices for noise-free automated control systems. - M .: Radio and communications, 2002, p.45, 46].

The disadvantage of this device is the inability to reverse the account.

The claimed device is aimed at solving the problem of counting pulses with the possibility of reversal.

The problem arises in the development and creation of purely optical computers or transceivers that provide information processing in the GHz range, and is solved as follows.

The essence of the device consists in the formation of the two optical input signals Ip and Im of the output optical signals D ₀ ... D _n corresponding to the state of the counting cells of the SC. Each counting cell has counting inputs Ip and Im, outputs of the state of NW D _i , as well as outputs of signals of the presence of transfer to the next bit P _i and the presence of a loan M _i .

The proposed device is based on optical combiners, optical amplifiers, optical Y-couplers, optically coupled waveguides, a delay line, optical dividers and is explained graphically (first inputs of optical combiners, first outputs of optical Y-couplers, first inputs and first outputs of optically coupled waveguides are indicated dots). Optical Y-splitters have the property of amplification (the signal intensity at each output is equal to the signal intensity at the input).

Each counting cell consists of 5 optical Y-couplers 1 _i , _{i = 1 ... 5} , 5 optical combiners 2 _i , _{i = 1 ... 5} , 1 optical delay line 3 _i , 4 optically coupled waveguides 4 _i , _{i = 1 ... 4} and 2 optical dividers.

By optically coupled waveguides (OSW) are meant two optical waveguides having a common communication zone [Akayev A.A., Mayorov S.A. Optical methods of information processing. - M .: VSH, 1988, p.176, 181]. The coupling coefficient between the optical waveguides has a threshold static characteristic and is determined by the intensity of the optical signal in the first optical waveguide. If the intensity of the optical signal at the input of the first optical waveguide is greater than the threshold value, then the signal from the input of the first optical waveguide branches into the second optical waveguide and is transmitted to its output.

Information inputs of the device are inputs "Ip" and "Im". The outputs of the device are the outputs "D ₀ ... D _n ", "P _n ", "M _n ".

Information signals Ip and Im are fed to the inputs of the optical Y-splitters 1 ₁ , 1 ₂ . The first outputs of the optical Y-splitters 1 ₁ , 1 _{2 are} connected to the first inputs of the optical combiners 2 ₂ , 2 ₅ . The second output of the optical Y-splitter 1 _{1 is} connected to the second input of the optical combiner 2 ₁ . The output of the optical combiner 2 _{1 is} connected to the first input of the optical combiner 2 ₃ . The output of the optical combiner 2 _{3 is} connected to the first input of the OSB 4 ₁ . The first output of the OSV 4 _{1 is} connected to the input of the optical Y-splitter 1 ₅ . The first output of the optical Y-splitter 1 ₅ is the output of the device "D _i ". The second output of the optical Y-splitter 1 _{5 is} connected to the input of the optical delay line 3 ₁ . The output of the delay line 1 _{3 is} connected to the input of the optical Y-splitter 1 ₄ , the first output of which is connected to the second input of the optical combiner 2 ₃ . The second output of the optical Y-splitter 1 _{4 is} connected to the input of the optical Y-splitter 1 ₃ . The first output of the optical Y-splitter 1 _{3 is} connected to the second input of the optical combiner 2 ₂ . The second output of the Y-splitter 1 _{3 is} connected to the first input of the optical combiner 2 ₄ . An optical signal of intensity 1 cu is applied to the second input of the optical combiner 2 ₄ The output of the optical combiner 2 _{4 is} connected to the first input of the OSB 4 ₃ . The output of the OSB 4 _{3 is} connected to the second input of the optical combiner 2 ₅ . The output of the optical combiner 2 _{5 is} connected to the first input of the OSB 4 ₄ . The second output of the OSV 4 _{4 is} connected to the input of the optical divider 5 ₂ . The output of the optical divider 5 ₂ is the output of the device "M". The output of the optical combiner 2 _{2 is} connected to the first input of the OSB 4 ₂ . The second output of the OSV 4 _{2 is} connected to the input of the optical divider 5 ₁ . The output of the optical divider is the output of the device "P".

The second inputs and second outputs of the OSV 4 ₁ and 4 ₃ are absorbing. Also absorbing are the first inputs of OSV 4 ₂ and OSV 4 ₄ .

In the initial state, the signal intensity at all outputs D ₀ ... D _n is 0. When a signal with an intensity of 1 cu is applied to the input "Ip" he, having passed through an optical Y-splitter 1 ₁ , optical combiners 2 ₁ and 2 ₃ , is fed to the input of the OCB 4 ₁ . Since the signal intensity is less than 2 cu, the pulse freely passes to the output and then goes through the optical Y-splitter 1 ₅ to the output "D ₀ ". Co the second output of the Y-splitter 1 ₅ pulse is fed to the input of the delay line 3 ₁ . At the time of the termination of the pulse at the input "Ip", the signal from the output of the delay line through the optical Y-splitter 1 ₄ and the optical combiner is fed to the input of the OCB 4 ₁ , as a result, the pulse will run along the ring.

After the second pulse arrives at the input “Ip”, it passes through the optical Y-splitter 1 ₁ and the optical combiner 2 ₁ and goes to the input of the optical combiner 2 ₃ . At its inputs there are two signals with an intensity of 1 cu each, therefore, the intensity of the output signals will be 2 cu In this case, the signal at the input of the OSV 4 ₁ will be 2 cu, which will lead to the switching of the light flux to the second output of the OSV 4 ₁ . Accordingly, the signal at the output of "D ₀ " will be 0 cu

The second pulse, passing through the optical Y-splitter 1 ₁ , is fed to the optical combiner 2 ₂ . The signal intensity at the output of the delay line 3 ₁ is 1 cu This signal, passing through the optical Y-splitters 1 ₄ and 1 ₃ , is fed to the input of the optical combiner 2 ₂ . The signal at its output will be 2 cu, which will lead to the switching of the luminous flux into the second waveguide OSV 4 ₂ . As a result, at the output of "P ₀ " there will be a pulse with an intensity of 1 cu

In the subtraction mode, pulses are fed to the input "Im". The arrival of the first pulse leads to the appearance of a signal of intensity 1 cu in a ring consisting of elements 2 ₃ , 4 ₁ , 1 ₅ , 3 ₁ and 1 ₄ . At the time of receipt of the pulse, the signal at the output of the delay line 3 ₁ was 0 cu, as a result, at the input of the OCB 4 _{3 there} will be a signal 1 cu, which through the optical combiner will be fed to the input of the OCB 4 ₄ . As a result, a pulse of intensity 2 cu will appear at the second output of the WWS 4 ₄ , and a pulse of 1 cu will appear at the output of M ₀

When a second pulse arrives at the input Im, the signal intensity in the ring of elements 2 ₃ , 4 ₁ , 1 ₅ , 3 ₁ and 1 ₄ will be 0 cu At the time of the second pulse, the signal at the output of the delay was 1 cu, as a result, at the input of the OCB 4 _{3 there} will be a signal of 2 cu, which will lead to switching of the light flux into the second waveguide. The signal intensity at the input of the OSB 4 ₄ will be equal to 1 cu, so the signal at the output of "M" will be equal to 0 cu

The work of all other counting cells is similar to the work considered, which corresponds to the work of a binary reversible counter.

Claims (1)

Optical reversible counter, characterized in that it consists of n identical counting cells, each of which consists of optical Y-couplers, optical combiners, optical threshold devices based on optically coupled waveguides, an optical delay line and optical dividers, while the information inputs of the device are the Ip and Im inputs, which are connected through an optical Y-coupler to an optical combiner, an optical threshold device, an optical Y-coupler, to a delay line and form a ring With output D _i , the output of the optical delay line through the optical Y-couplers is connected to optical combiners with signals Ip and Im, which are connected to optical threshold devices that form the output signals “P _i ” and “M _i ”, which arrive at the counting cell i +1 through optical dividers.