RU2451978C1 - Optical minimum signal nanoselector - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: optical minimum signal nanoselector, having telescopic nanotubes, an optical constant signal source, input optical nanowaveguides, also includes two optical n-output nanowaveguide splitters, an optical n-input nanowaveguide coupler and an optical nanowaveguide Y-splitter.

EFFECT: broader capabilities of the device owing to the function of determining the minimum signal from a set of optical signals transmitted to its input, and generating optical flux at the output of the device with radiation intensity which is proportional to said minimum signal, said device having a nanosize design.

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Description

The invention relates to computer technology and can be used in optical nanodevices for processing information to select (select) the minimum signal from the set of optical signals supplied to its input.

A well-known optical minimum signal selector is the minimum signal selector [A.S. No. 1223259, USSR, 1986. The minimum signal selector / Sokolov S.V. and others.], designed to calculate the minimum signal from a set of optical signals supplied to its input. The minimum signal selector contains differential optocouplers, input optical waveguides.

The essential features of an analogue common with the claimed device are as follows: optical waveguides.

The disadvantages of this device are the design complexity and the inability to implement the device in nanoscale execution.

The closest in technical execution to the claimed device is an optical nanocomparator [RF patent No. 2357275. Optical nanocomparator / Sokolov SV, Kamensky VV, 2009, BI No. 15], containing input and output optical nanowaves, telescopic nanotubes, a constant signal source.

The essential features of the prototype, common with the claimed device, are telescopic nanotubes, a constant signal source, input optical nanowaves.

The disadvantage of the prototype is the inability to determine the minimum signal from the set of optical signals supplied to its input.

The objectives of the invention are the creation of an optical device that can determine the minimum signal from a set of optical signals supplied to its input and generate an optical stream with a radiation intensity proportional to this minimum signal at the device output, as well as the implementation of the device in nanoscale design.

The technical result is to expand the capabilities of the device by performing the function of determining the minimum signal from the totality of the optical signals supplied to its input, and generating an optical stream at the output of the device with a radiation intensity proportional to this minimum signal when the device is implemented in nanoscale design.

The essence of the invention lies in the fact that in the optical nanoselector of the minimum signal containing telescopic nanotubes, an optical constant signal source, input optical nanowave guides, two optical n-output nanowaveguide couplers, an optical n-input nanowave combiner, an optical nanowave Y-splitter, i- the input of the optical nanoselector of the minimum signal is the input of the i-th input optical nanowave (i = 1, 2, ..., n), the output of the optical source of a constant signal is connected is connected to the input of the first optical n-output nano-waveguide splitter, the i-th output of which is optically connected to the i-th input of the optical n-input nano-waveguide combiner (i = 1, 2, ..., n), the output of which is connected to the input of the optical nano-waveguide Y- a splitter, the first output of which is connected to the input of the second optical n-output nanowave splitter, and the ith pair of telescopic nanotubes is located between the i-th output of the second optical n-output nanowave splitter and the output of the i-input optical nano the waveguide along the propagation axis of their output optical signals in such a way that, in the initial position, the inner nanotube of any pair of telescopic nanotubes breaks the optical connection between the outputs of the first optical n-output nanowave splitter and the corresponding inputs of the optical n-input nanowave combiner, and with the leftmost position all internal nanotubes pairs of telescopic nanotubes there is an optical connection between all the outputs of the first optical n-output nanowave th splitter and the respective inputs of the optical nanovolnovodnogo n-input combiner (i = 1, 2, ..., n), and the second output optical nanovolnovodnogo Y-coupler is an output device.

The claimed device is built on the basis of optical nanowaveguides, technical options for which are described in [Optics of nanostructures / Edited by A.V. Fedorov: St. Petersburg. Nedra, 2005; Krenn J.R., Dereux A., Weeber J.C., 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 refers to a pair of nanotubes embedded in each other [Multiwalled Carbon Nanotubes as Gigahertz Oscillators / Quanshui Zheng, Qing Jiang // Phys. Rev. Lett. 88, 045503, 28 January, 2002].

Functional diagram of the optical nanoselector minimum signal shown in figure 1.

The optical nanoselector of the minimum signal contains:

- 1 ₁ , 1 ₂ , ..., 1 _n -n input optical nanowaveguides;

- 2 - a source of constant radiation (II) with an intensity of 2 × n ² conditional units;

- 3 ₁ , 3 ₂ - the first and second optical nanowave n-output splitters;

- 4 ₁₁ , 4 ₁₂ , 4 ₂₁ , 4 ₂₂ , ..., 4 _n1 , 4 _n2 - n pairs of telescopic nanotubes;

- 5 - optical n-input nanowaveguide combiner;

- 6 - optical nanowaveguide Y-splitter.

The optical nanoselector of the minimum signal has n inputs, and the i-th input is the input of the 1st input nanowave optical 1 _i (i = 1, 2, ..., n).

The output of AI 2 is connected to the input of the first optical n-output nanowave splitter 3 ₁ , the first output of which has optical connection with the 1st input of the optical n-input nanowave combiner 5 (i = 1, 2, ..., n).

The output of the optical n-input nanowave combiner 5 is connected to the input of the optical nanowave Y-splitter 6, the first output of which is connected to the input of the second optical n-output nanowave splitter 3 ₂ , and the second output is the output of the device.

Each i-th pair of telescopic nanotubes 4 _i1 , 4 _i2 is located between the output of the i-th input optical nanowave guide 1 _i and the i-th output of the second optical n-output nanowave splitter 3 ₂ along the propagation axis of their output optical signals.

Under the influence of the force difference due to the pressure of the light flux (the optical power difference of 1-5 watts creates a force difference of 5-15 nN), the inner nanotube 4 _{i1 of the} i-th pair of telescopic nanotubes 4 _i1 , 4 _i2 (i = 1,2, ..., n) will move toward the optical flow with a lower intensity (it must be borne in mind that the minimum force required to move the nanotube is attonewtons [Multiwalled Carbon Nanotubes as Gigahertz Oscillators / Quanshui Zheng, Qing Jiang // Phys. Rev. Lett. 88 , 045503, 28 January, 2002]).

In the extreme right (initial) position, any inner nanotube 4 _{i1 of the} i-th pair of telescopic nanotubes 4 _i1 , 4 _i2 breaks the optical connection between the outputs of the first optical n-output nanowave splitter 3i and the corresponding inputs of the optical n-input nanowave combiner 5, and at the extreme the left position of all internal nanotubes 4 ₁₁ , 4 ₂₁ , ..., 4 _n1 n pairs of telescopic nanotubes 4 ₁₁ , 4 ₁₂ , 4 ₂₁ , 4 ₂₂ , ..., 4 _n1 , 4 _n2 , an optical connection is formed between the outputs of the first optical n-output nanowave splitter 3 ₁ and with Resp optical inputs nanovolnovodnogo n-input combiner 5 (i = 1, 2, ..., n).

The operation of the device proceeds as follows.

From the output of AI 2 optical stream with an intensity of 2 × n ² srvc. units arrives at the input of the first optical n-output nanowave splitter 3 ₁ , from each i-th output of which an optical flow with an intensity of 2 × n conv. units

In the initial state (when optical signals are not supplied to the inputs of the optical nanoselector of the minimum signal), the optical flows from the outputs of the first optical n-output nanowave splitter 3 ₁ will not pass to the inputs of the optical n-input nanowave combiner 5 (they will be absorbed), since all internal nanotubes 4 ₁₁ , 4 ₂₁ , ..., 4 _n1 n pairs of telescopic nanotubes 4 ₁₁ , 4 ₁₂ , 4 ₂₁ , 4 ₂₂ , ..., 4 _n1 , 4 _n2 are in the extreme right positions.

Let further be a set of n optical signals, the intensity of the minimum of which is equal to k conv. units (k <n), is fed to the inputs of the optical nanoselector of the minimum signal, i.e. to the inputs of the input optical nanowaveguides 1 ₁ , 1 ₂ , ..., 1 _n . Further, from the outputs of the input optical nanowaveguides 1 ₁ , 1 ₂ , ..., 1 _n, these optical signals are transmitted to the corresponding inner nanotubes 4 ₁₁ , 4 ₂₁ , ..., 4n ₁ n pairs of telescopic nanotubes 4 ₁₁ , 4 ₁₂ , 4 ₂₁ , 4 ₂₂ , ..., 4n ₁ , 4n ₂ .

Under the action of the pressure forces of the input optical flows, the inner nanotubes 4 ₁₁ , 4 ₂₁ , ..., 4 _n1 n pairs of telescopic nanotubes 4 ₁₁ , 4 ₁₂ , 4 ₂₁ , 4 ₂₂ , ..., 4n ₁ , 4n ₂ begin to move to the left. As they move to the left, an optical connection will appear between the outputs of the first optical n-output nanowave splitter 3 ₁ and the corresponding inputs of the optical n-input nanowave splitter 5.

When an optical connection appears between the 1st, 2nd, ..., kth outputs of the first optical n-output nanowave splitter 3 ₁ and the 1st, 2nd, ..., kth inputs of the optical n-input nanowave combiner 5 at the output of the optical n-input nanowave combiner 5, an optical stream with an intensity of 2 × k × n conv. units Further, this optical stream enters the input of the optical nanowave-wave Y-splitter 6, from the first output of which an optical stream with an intensity of k × n conv. units arriving at the input of the second optical n-output nanowave splitter 3 ₂ .

At each output of the second optical n-output nanowave splitter 3 ₂ , optical flows with an intensity of k conv. units that enter the inner nanotubes 4 ₁₁ , 4 ₂₁ , ..., 4n ₁ n pairs of telescopic nanotubes 4 ₁₁ , 4 ₁₂ , 4 ₂₁ , 4 ₂₂ , ..., 4 _n1 , 4 _n2 .

Suppose that an optical stream with a minimum intensity k srvc. units arrives at the i-th input of the optical nanoselector of the minimum signal.

Since at the 1st input of the optical nanoselector of the minimum signal there is an optical stream with an intensity of k conv. units, then the inner nanotube 4 _{i1 of the} i-th pair of telescopic nanotubes 4 _i1 , 4 _i2 - the only one of all internal nanotubes at the end of the transition process (≈10 ^-9 s) will stop its movement to the left and stop (since on both sides it will be affected by two optical fluxes of the same intensity - input and feedback). The remaining internal nanotubes 4 ₁₁ , 4 ₂₁ , ... 4 _i-1 , ₁ , 4 _{i + 1,1} , ..., 4 _n1 n-1 pairs of telescopic nanotubes 4 ₁₁ , 4 ₁₂ , 4 ₂₁ , 4 ₂₂ , ..., 4 _{i -1,1} , 4 _i-12 , 4 _{i + 1,1} , 4 _{i + 12} , ..., 4 _n1 , 4 _n2 will occupy the leftmost position, since the intensity of the input optical flows at the 1st, 2nd, ... , (i-1) -th, (i + 1) -th, ..., nth inputs of the optical selector of the minimum signal will be greater than the intensity (k srvc.) of the optical feedback flow. In this case, there will be no optical connection between the (k + 1) -m, (k + 2) -m, ..., nth outputs of the first optical n-output nanowave splitter 3 ₁ and (k + 1) -m, (k + 2) th, ..., n-th inputs of the optical n-input nanowave combiner 5 - the optical flux will be absorbed by the inner nanotube 4 _{i1 of the} i-th pair of telescopic nanotubes 4 _i1 , 4 _i2 .

Simultaneously, from the second output of the optical nanowaveguide Y-splitter 6, an optical stream with an intensity of k × n conv. units proportional to the intensity of the minimum optical flux from the total optical flux supplied to the input of the device.

After the supply of the minimum signal of a set of n optical fluxes to the input of the optical nanoselector stops, the internal nanotubes 4 ₁₁ , 4 ₂₁ , ..., 4 _n1 n pairs of telescopic nanotubes 4 ₁₁ , 4 ₁₂ , 4 ₂₁ , 4 ₂₂ , ..., 4 _n1 , 4 _n2 will take right (initial) position due to the pressure of the optical feedback flows with intensity k × n conv. units from the outputs of the second optical n-output nanowave splitter 3 ₂ . The optical nanoselector of the minimum signal returns to its original state.

Thus, the optical nanoselector of the minimum signal determines the minimum signal from the set of optical signals supplied to its input, and generates an optical stream at its output with an intensity proportional to the intensity of this minimum signal.

The speed of the optical nanoselector of the minimum signal is determined by the mass of the inner nanotube (≈10 ^-15 -10 ^-16 g), the friction force during its movement (≈10 ^-10 n), and the difference in the intensities of the optical signals is ≈10 ^-9 s. For existing optical systems for processing information and signals, such a speed ensures their operation in almost real time.

Claims (1)

An optical nanoselector of a minimum signal containing telescopic nanotubes, an optical source of a constant signal, input optical nanowave guides, characterized in that two optical n-output nanowave guides are introduced into it, an optical n-input nanowave guides, an optical nanowave Y-splitter, and the ith input the optical nanoselector of the minimum signal is the input of the i-th input optical nanowave (i = 1, 2, ..., n), the output of the optical constant signal source is connected to the input the first optical n-output nano-waveguide splitter, the i-th output of which is optically connected to the 1st input of the optical n-input nano-waveguide combiner (i = 1, 2, ..., n), the output of which is connected to the input of the optical nano-waveguide Y-splitter, the first the output of which is connected to the input of the second optical n-output nanowave splitter, and the ith pair of telescopic nanotubes is located between the i-th output of the second optical n-output nanowave splitter and the output of the i-input optical nanowave the propagation axis of their output optical signals in such a way that in the initial position the inner nanotube of any pair of telescopic nanotubes breaks the optical connection between the outputs of the first optical n-output nanowave splitter and the corresponding inputs of the optical n-input nanowave combiner, and at the extreme left position of all internal nanotubes of pairs telescopic nanotubes there is an optical connection between all the outputs of the first optical n-output nanowave splitter amplifier and the corresponding inputs of the optical n-input nanowaveguide combiner (i = 1, 2, ..., n), and the second output of the optical nanowaveguide Y-splitter is the output of the device.