WO2023241145A1

WO2023241145A1 - Multifunctional photoelectric logic gate based on single light source and single detector

Info

Publication number: WO2023241145A1
Application number: PCT/CN2023/082149
Authority: WO
Inventors: 曹国洋; 李孝峰; 桑田; 吴绍龙; 王跃科; 黄杨; 边志浩
Original assignee: 苏州大学
Priority date: 2022-06-13
Filing date: 2023-03-17
Publication date: 2023-12-21
Also published as: CN115128881B; CN115128881A

Abstract

A multifunctional photoelectric logic gate based on a single light source and a single detector. A bipolar current response is achieved by regulating and controlling the polarization direction of light, and then logic determination is performed by means of the polarity of a signal current, so that the five basic logic functions of AND, OR, NOT, NAND and NOR can be completed by means of a single architecture, thereby greatly improving the integration level of the space and function of a photoelectric logic gate, reducing the complexity of a device, and strongly promoting the development of high integration, high precision, low power consumption and multiple functions of the photoelectric logic gate. Moreover, logic determination is performed by means of the polarity instead of the magnitude of a signal current, which is more conducive to the improvement in the accuracy of logic determination. Various logic functions are achieved by using polarization beam splitting of the same light source, such that the operation of the photoelectric logic gate is not affected by limited fluctuations of the power of the light source.

Description

A multifunctional photoelectric logic gate based on a single light source and a single detector

Technical field

The invention relates to a multifunctional photoelectric logic gate based on a single light source and a single detector, and belongs to the field of photoelectric information.

Background technique

With the explosive growth of data volume and data processing requirements and the continuous extension of the chip Moore cycle, it is increasingly difficult for all-electronic logic gate chips to meet the needs of future social development. Therefore, the research and development of new logic computing platforms with faster computing speed and lower power consumption has great scientific significance and application value. The seamless integration of photons and electrons into a single platform at the nanoscale is considered a next-generation technology [Cahoon J F. Letting photons out of the gate[J]. Nature Nanotechnology, 2017, 12(10):938–939.].

As one of the core components, optoelectronic logic gates have received widespread attention in recent years. And photoelectric logic gates have broad application prospects in computing, interconnection, communications and new diagnostics [Chen H, Liu H, Zhang Z, et al. Nanostructured photodetectors: from ultraviolet to terahertz[J]. Advanced Materials, 2016, 28(3):403–433.]. Currently commonly reported optoelectronic logic gates are basically two or more detectors connected in series and parallel, and realize a single optoelectronic logic function under the illumination of a single or two wavelengths of light, such as "Kim J, Lee H C, Kim K H ,et al.Photon-triggered nanowire transistors[J].Nature nanotechnology,2017,12(10):963–968" proposes an optoelectronic logic gate implemented using porous silicon nanowires, by connecting two sections of porous silicon in series with The parallel architecture realizes AND gate logic and OR gate logic respectively under the illumination of two beams of light; "Li M, Xu J, Zhu K, et al. The fabrication of a self-powered CuInS 2/TiO 2 heterojunction photodetector and its application in visible light communication with ultraviolet light encryption[J].Journal of Materials Chemistry C, 2021,9(41):14613–14622" A CuInS ₂ /TiO ₂ heterojunction photodetector is proposed, which can detect light under ultraviolet and visible light irradiation OR gate logic is realized through linear superposition of photocurrent; "Ding L, Liu N, Li L, et al. Graphene-skeleton heat-coordinated and nanoamorphous-surface-state controlled pseudo-negative-photoconductivity of tiny SnO2 nanoparticles[J] .Advanced Materials, 2015, 27(23):3525–3532 "NOR gate logic is realized by connecting SnO _2- based positive photoconductive detector and SnO ₂ /graphene-based negative photoconductive detector;" Gao Yihua, Ding Longwei, Liu Nishuang, et al. An optoelectronic logic gate based on tin dioxide nanoparticles and its preparation method:, CN104849940A[P]. 2015. "Furthermore, through different architectures such as series and parallel connection, AND, OR, NOT, etc. are realized respectively. Functional logic gates.

However, a device architecture that can only realize one logic function is obviously not conducive to multi-functional integrated operations. Therefore, researchers proposed to use the superposition of photoelectric responses of photovoltaic devices to realize multi-functional logic gates based on a single device [Prasad M, Roy S. Optoelectronic logic gates based on photovoltaic response of bacteriorhodopsin protein thin films[C]//2012International Conference on Fiber Optics and Photonics(PHOTONICS).IEEE, 2012:1–3.], but limited by unipolar signals, this device achieves changes in logic functions by setting different thresholds. There are two problems in realizing different logic functions through different thresholds. On the one hand, the logic The judgment accuracy will be lower due to fluctuations in input power. On the other hand, the signal cannot be maintained due to severe attenuation [Gao Yihua, Ding Longwei, Liu Nishuang, et al. An optoelectronic logic gate based on tin dioxide nanoparticles and its preparation method :,CN104849940A[P].2015.].

Recently, some researchers have used the spectral bipolar response of the back-to-back PN structure to realize multifunctional photoelectric logic gates based on a single device [Kim W, Kim H, Yoo T J, et al. Perovskite multifunctional logic gates via bipolar photoresponse of single photodetector[ J].Nature communications, 2022,13(1):1–8.], However, on the one hand, this back-to-back configuration (i.e., p+-i-n-p-p+) is based on two vertically stacked perovskite diodes and requires complex The preparation process of energy band engineering and doping processes is complex and difficult; on the other hand, when the size of the pixel unit of the detection device is reduced from hundreds of microns to tens of microns, the response performance decays quickly, which is not conducive to the high spatial integration of the device. In addition, the device needs to utilize power modulation of two wavelength light sources to implement multi-functional logic, resulting in more complexity at the optical end.

Therefore, it is of great value and significance to develop new multi-functional optoelectronic logic gates based on a single light source and single device with simple structure, small size and high performance.

Contents of the invention

In order to solve the above-mentioned problems of existing multi-functional logic gates based on a single device, the present invention provides a multi-functional photoelectric logic gate based on a single light source and a single detector, which achieves bipolar current response by regulating the polarization direction of light. Then, logical judgment is made through the polarity of the signal current, and a single architecture can be realized to complete the five basic logic functions of AND, OR, NOT, NAND, and NOR, which greatly improves the space and functional integration of the photoelectric logic gate and reduces the cost. The complexity of devices has strongly promoted the development of optoelectronic logic gates in the direction of high integration, high precision, low power consumption and multi-function.

The first purpose of this application is to provide a multifunctional optoelectronic logic gate based on a single light source and a single detector. The multifunctional optoelectronic logic gate includes: a linearly polarized light source, a first polarizing beam splitter PBS ₁ , an electrical modulation half Wave plate HWP, second polarizing beam splitter PBS ₂ , 50%:50% beam splitters BS ₁ and BS ₂ , three total mirrors, four optical on-off controllers, beam combiner and bipolar automatic Drive polarized light detector;

The beam emitted by the linearly polarized light source is divided into P wave and S wave after passing through the first polarizing beam splitter PBS ₁ ; the P wave passes through the electrically modulated half-wave plate HWP to adjust the polarization direction and then passes through the second polarizing beam splitter PBS ₂ to decompose the beam. P waves and S waves, respectively called TM waves and TE waves, change the direction of the TE wave through a total mirror so that it continues to propagate in the same direction as the TM wave;

The TM wave and the TE wave are decomposed by the 50%:50% beam splitter BS ₁ and BS ₂ respectively, and four beams of light are obtained, respectively called TM ₁ , TM ₂ , TE ₁ , TE ₂ , two of which pass through A total reflecting mirror changes its direction so that four beams of light continue to travel in the same direction;

TM ₁ , TM ₂ , TE ₁ and TE ₂ each pass through a light on-off controller and then combine into a beam of light through a beam combiner to illuminate the bipolar self-driven polarized light detector;

The multifunctional optoelectronic logic gate controls the polarization direction through electrically modulating the half-wave plate HWP, and combines the on-off of four optical on-off controllers to realize five basic logic functions of AND, OR, NOT, NAND, and NOR.

Optionally, the bipolar self-driven polarized light detector is a detector that can realize the opposite polarity of the response current of the device when illuminated by TE/TM polarized light without external bias.

Optionally, the bipolar self-driven polarized light detector is a nested grating structure, including: a silicon dioxide/silicon substrate, a metal nanowire grating array arranged on the substrate, and covered with a metal nanowire grating. a semiconductor layer outside the array and a transparent conductive layer covering the semiconductor layer.

Optionally, in the metal nanowire grating array, the metal nanowire material is silver, and the cross section is rectangular or square; the metal nanowire side length is 55±5nm, the length is 3~10μm, and the period is 750nm.

Optionally, the semiconductor layer is made of perovskite material, and the thickness of the semiconductor layer shell is set to 94±5nm.

Optionally, the transparent conductive layer is made of transparent conductive oxide ITO, with a thickness of 80 nm.

Optionally, the metal nanowires at one end of the metal nanowire grating array are connected through a section of metal nanowires with a width of 50±20 nm; the transparent conductive layer at the other end is connected correspondingly.

Optionally, one end of the metal nanowire grating array is connected to a wire as an electrode at one end, the transparent conductive layer connected to the other end is connected to a wire as the other electrode, and the wires drawn from the electrodes at both ends are connected with an ammeter or connected to a load.

Optionally, the linearly polarized light source is a single visible light laser, and the wavelength range of the visible light laser is 440-550 nm.

The second purpose of this application is to provide a method for realizing logic functions using the above-mentioned multi-functional photoelectric logic gate based on a single light source and a single detector. The method includes:

Determine the photocurrent ratio of the bipolar self-driven polarized light detector under the incidence of equal power TM and TE polarized light, assuming -k (where k>0), then:

When the logic function to be realized is AND gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is in the range of 0.6k to 0.9k, and TE ₁ and The optical on-off controller corresponding to TE ₂ is set to on state, TM ₁ and TM ₂ are set as two logical light inputs, and the response current of the bipolar self-driven polarized light detector is set as one logical electrical output. This can be achieved AND gate logic function;

When the logic function to be implemented is OR gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is in the range of 0.6k to 0.9k, and TE ₁ corresponds to Set the optical on-off controller to the on-state, set the optical on-off controller corresponding to TE ₂ to the off-state, set TM ₁ and TM ₂ as two logical light inputs, and set the bipolar self-driven polarized light detector The response current is set as a logic electrical output, which can realize the OR gate logic function.

When the logic function to be realized is NAND gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is between 1.2k and 1.8k, and TM ₁ and The corresponding optical on-off controller of TM ₂ is set to on state, TE ₁ and TE ₂ are set as two logical light inputs, and the response current of the bipolar self-driven polarized light detector is set as one logical electrical output. This can be achieved NAND gate logic function;

When the logic function to be realized is NOR gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is between 1.2k and 1.8k, and TM ₁ corresponds to Set the optical on-off controller to the on-state, set the optical on-off controller corresponding to TM ₂ to the off-state, set TE ₁ and TE ₂ as two logical light inputs, and set the bipolar self-driven polarized light detector The response current is set as a logic electrical output, which can realize the NOR gate logic function;

When the logic function to be realized is a NOT gate logic, pre-regulate the electrically modulated half-wave plate HWP so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is between 1.2k and 1.8k, and set TM ₁ corresponding to Set the optical on-off controller to the on-state, set the optical on-off controller corresponding to TM ₂ to the off-state, set the optical on-off controller corresponding to TE ₁ to the off-state, and set TE ₂ as a logical optical input. By setting the response current of the bipolar self-driven polarized light detector as a logic electrical output, the NOT gate logic function can be realized.

Optionally, the method uses two or one of TM ₁ , TM ₂ , TE ₁ , and TE ₂ as logical light inputs, and defines the on-state of the light input as logic 1 and the off-state as logic 0; the bipolar The response current signal of the linear self-driven polarized light detector is used as a logic electrical output, and it is defined that when the response current is a positive value, the output is logic 1, and when the response current is a negative value, the output is logic 0.

The beneficial effects of the present invention are:

This application designs a new structure of optoelectronic logic gate, which realizes bipolar current response by regulating the polarization direction of light, and then performs logical judgment through the polarity of signal current, realizing AND, OR and NOT with a single architecture. The five basic logic functions of , NAND and NOR have greatly improved the space and functional integration of optoelectronic logic gates, reduced the complexity of devices, and strongly promoted the optoelectronic logic gates towards high integration, high precision, low power consumption and multiple functions. Functional direction development. Moreover, the photoelectric logic gate based on a single light source and a single detector provided by the present invention performs logical judgment based on the polarity of the signal current rather than the magnitude, which is more conducive to improving the accuracy of the logical judgment. In addition, the present invention utilizes polarization splitting of the same light source to implement multiple logic functions, and the operation of the optoelectronic logic gate is not affected by limited fluctuations in light source power.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of a multifunctional optoelectronic logic gate provided by an embodiment of the present invention;

Figure 2 is a schematic diagram of a bipolar self-driven polarized light detector provided by an embodiment of the present invention.

Figure 3 is a truth table of multiple logic functions of a logic gate and a corresponding simulation diagram of the output current response provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Example 1:

This embodiment provides a multifunctional optoelectronic logic gate based on a single light source and a single detector. Refer to Figure 1. The multifunctional optoelectronic logic gate based on a single light source and a single detector includes: a linearly polarized light source and a first polarizing beam splitter. PBS ₁ , electrically modulated half-wave plate HWP, second polarization beam splitter PBS ₂ , 50%:50% beam splitters BS ₁ and BS ₂ , three total mirrors, four optical on-off controllers, beam combiner detectors and bipolar self-driven polarized light detectors;

TM ₁ , TM ₂ , TE ₁ and TE ₂ each pass through a light on-off control device and then combine into a beam of light through a beam combiner to illuminate the bipolar self-driven polarized light detector;

The optoelectronic logic gate controls the polarization direction by electrically modulating the half-wave plate HWP and combines the on-off of four optical on-off control devices to realize five basic logic functions of AND, OR, NOT, NAND, and NOR.

The bipolar self-driven polarized light detector is a detector that can realize the opposite polarity of the response current of the device when illuminated by TE/TM polarized light without external bias.

As shown in Figure 2, the bipolar self-driven polarized light detector has a nested grating structure, including: a silicon dioxide/silicon substrate, a metal nanowire grating array arranged on the substrate, and covered with a metal nanowire grating. a semiconductor layer outside the array and a transparent conductive layer covering the semiconductor layer.

In the metal nanowire grating array, the metal nanowire material is silver, and the cross section is rectangular or square; the metal nanowire side length is 55±5nm, the length is 3~10μm, and the period is 750nm.

The semiconductor layer uses perovskite material, and the thickness of the semiconductor layer shell is set to 94±5nm.

The transparent conductive layer is made of transparent conductive oxide ITO with a thickness of 80nm.

The metal nanowires at one end of the metal nanowire grating array are connected through a section of metal nanowires with a width of 50±20nm; the transparent conductive layer at the other end is connected correspondingly.

One end of the metal nanowire grating array is connected to a wire as one end electrode, and the transparent conductive layer connected to the other end is connected to a wire as the other end electrode. The wires drawn from the electrodes at both ends are connected with an ammeter or a load.

The light on-off control device can use apertures (Apertures) that control light on-off. Define the aperture to be on as logic 1 and off as logic 0; use the current signal of the detector as a logic electrical output, and define the output when the current is a positive value as Logic 1, the output is logic 0 when the current is negative.

The linearly polarized light source is a single visible light laser, and the visible light laser wavelength range is 440~550nm.

Example 2:

This embodiment provides a method for implementing logic functions based on the multi-functional photoelectric logic gate with a single light source and a single detector provided in Embodiment 1. See Figure 3. The method includes:

Determine the photocurrent ratio of the bipolar self-driven polarized light detector when TM and TE polarized light of equal power are incident, assuming it is –k, where k>0, then:

When the logic function to be implemented is OR gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is in the range of 0.6k to 0.9k, and TE ₁ corresponds to Set the optical on-off controller to the on-state, set the optical on-off controller corresponding to TE ₂ to the off-state, set TM ₁ and TM ₂ as two logical light inputs, and set the bipolar self-driven polarized light detector The response current is set as a logic electrical output, which can realize the OR gate logic function;

Embodiment three:

This embodiment provides a method for implementing logic functions using a multi-functional photoelectric logic gate based on a single light source and a single detector provided in Embodiment 1. The method includes:

Use a single visible light laser to generate monochromatic light with a wavelength of 500nm;

When monochromatic light with a wavelength of 500 nm is incident, the photocurrent ratio of the bipolar self-driven polarized light detector under the incident of equal power TM and TE polarized light is measured to be 1:–1;

To execute the AND gate logic, the HWP is adjusted in advance so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is 3:4. Then open the apertures controlling TE ₁ and TE ₂ , set TM ₁ and TM ₂ as two logical light inputs, and set the detector current as one logical electrical output to realize the AND gate logic function;

Furthermore, without changing the HWP, only close the aperture controlling TE ₂ , keep the aperture controlling TE ₁ open, and still set TM ₁ and TM ₂ as two logical light inputs, so that the OR gate logic function can be realized.

To execute the reverse logic gate, the HWP needs to be adjusted so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is 4:3. Then open the apertures controlling TM ₁ and TM ₂ , and set TE ₁ and TE ₂ as two logical light inputs to realize the NAND gate logic function;

Furthermore, without changing the HWP, only close the aperture that controls TM ₂ , keep the aperture that controls TM ₁ open, and still set TE ₁ and TE ₂ as two logical light inputs to realize the NOR gate logic function. ; Then control the aperture of TM ₁ to remain open, control the aperture of TM ₂ to remain closed, and then close the aperture of TE _1. Only set TE ₂ as a logical light input to realize the NOT gate logic function.

The current response corresponding to the logic truth table in Figure 3 verifies that the five basic logic functions of AND, OR, NOT, NAND, and NOR are realized.

It should be noted that in the description of the present invention, it needs to be understood that the terms "middle", "upper", "lower", "front", "back", "left", "right", "vertical"","horizontal","top","bottom","inside","outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. , rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as limiting the scope of the present invention. limits.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims

A multifunctional optoelectronic logic gate based on a single light source and a single detector, characterized in that the multifunctional optoelectronic logic gate includes: a linearly polarized light source, a first polarizing beam splitter PBS 1 , an electrically modulated half-wave plate HWP, a third Two polarization beam splitters PBS 2 , 50%:50% beam splitters BS 1 and BS 2 , three total mirrors, four optical on-off controllers, beam combiner and bipolar self-driven polarization detector ;

The beam emitted by the linearly polarized light source is divided into P wave and S wave after passing through the first polarizing beam splitter PBS 1 ; the P wave passes through the electrically modulated half-wave plate HWP to adjust the polarization direction and then passes through the second polarizing beam splitter PBS 2 to decompose the beam. P waves and S waves, respectively called TM waves and TE waves, change the direction of the TE wave through a total mirror so that it continues to propagate in the same direction as the TM wave;

The TM wave and the TE wave are decomposed by the 50%:50% beam splitter BS 1 and BS 2 respectively, and four beams of light are obtained, respectively called TM 1 , TM 2 , TE 1 , TE 2 , two of which pass through A total reflecting mirror changes its direction so that four beams of light continue to travel in the same direction;

TM 1 , TM 2 , TE 1 and TE 2 each pass through a light on-off controller and then combine into a beam of light through a beam combiner to illuminate the bipolar self-driven polarized light detector;

The multifunctional optoelectronic logic gate controls the polarization direction through electrically modulating the half-wave plate HWP, and combines the on-off of four optical on-off controllers to realize five basic logic functions of AND, OR, NOT, NAND, and NOR.
The optoelectronic logic gate according to claim 1, characterized in that the bipolar self-driven polarized light detector is capable of achieving opposite polarity of the response current of the device when there is no external bias under TE/TM polarized light irradiation. detector.
The optoelectronic logic gate according to claim 2, characterized in that the bipolar self-driven polarized light detector is a nested grating structure, including: a silicon dioxide/silicon substrate, and metal nanometers arranged on the substrate. Line grating array, a semiconductor layer covering the metal nanowire grating array and a transparent conductive layer covering the semiconductor layer.
The optoelectronic logic gate according to claim 3, characterized in that, in the metal nanowire grating array, the metal nanowire material is silver, and the cross section is rectangular or square; the metal nanowire side length is 55±5nm, and the length is 3～10μm, period is 750nm.
The optoelectronic logic gate according to claim 4, characterized in that the metal nanowires at one end of the metal nanowire grating array are connected through a section of metal nanowires with a width of 50±20nm; the transparent conductive layer at the other end is connected correspondingly.
The optoelectronic logic gate according to claim 5, wherein the linearly polarized light source is a single visible light laser. Optical device, visible light laser wavelength range is 440~550nm.
A method for realizing logic functions using a multi-functional photoelectric logic gate based on a single light source and a single detector according to any one of claims 1 to 6, characterized in that the method includes:

Determine the photocurrent ratio of the bipolar self-driven polarized light detector under the incidence of equal power TM and TE polarized light, assuming -k (where k>0), then:

When the logic function to be realized is AND gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is in the range of 0.6k to 0.9k, and TE 1 and The optical on-off controller corresponding to TE 2 is set to on state, TM 1 and TM 2 are set as two logical light inputs, and the response current of the bipolar self-driven polarized light detector is set as one logical electrical output. This can be achieved AND gate logic function;

When the logic function to be implemented is OR gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is in the range of 0.6k to 0.9k, and TE 1 corresponds to Set the optical on-off controller to the on-state, set the optical on-off controller corresponding to TE 2 to the off-state, set TM 1 and TM 2 as two logical light inputs, and set the bipolar self-driven polarized light detector The response current is set as a logic electrical output, which can realize the OR gate logic function.
A method for realizing logic functions using a multi-functional photoelectric logic gate based on a single light source and a single detector according to any one of claims 1 to 6, characterized in that the method includes:

Determine the photocurrent ratio of the bipolar self-driven polarized light detector under the incidence of equal power TM and TE polarized light, assuming -k (where k>0), then:

When the logic function to be realized is NAND gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is between 1.2k and 1.8k, and TM 1 and The corresponding optical on-off controller of TM 2 is set to on state, TE 1 and TE 2 are set as two logical light inputs, and the response current of the bipolar self-driven polarized light detector is set as one logical electrical output. This can be achieved NAND gate logic function;

When the logic function to be realized is NOR gate logic, the electrically modulated half-wave plate HWP is pre-regulated so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is between 1.2k and 1.8k, and TM 1 corresponds to Set the optical on-off controller to the on-state, set the optical on-off controller corresponding to TM 2 to the off-state, set TE 1 and TE 2 as two logical light inputs, and set the bipolar self-driven polarized light detector The response current is set as a logic electrical output, which can realize the NOR gate logic function;

When the logic function to be realized is a NOT gate logic, pre-regulate the electrically modulated half-wave plate HWP so that the intensity ratio of the TE and TM components of the linearly polarized light after passing through it is between 1.2k and 1.8k, and set TM 1 corresponding to Set the optical on-off controller to the on-state, set the optical on-off controller corresponding to TM 2 to the off-state, set the optical on-off controller corresponding to TE 1 to the off-state, and set TE 2 as a logical optical input. By setting the response current of the bipolar self-driven polarized light detector as a logical electrical output, non-linearity can be achieved. gate logic function.
The method according to claim 7 or 8, characterized in that the method uses two or one of TM 1 , TM 2 , TE 1 and TE 2 as logical light inputs, and defines the on-state of the light input as logical 1. The off-state is logic 0; the response current signal of the bipolar self-driven polarized light detector is used as a logic electrical output, and it is defined that when the response current is a positive value, the output is logic 1, and when the response current is a negative value, the output is logic 0. .