CN115508958A - Photon chip based on optical neural network - Google Patents
Photon chip based on optical neural network Download PDFInfo
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- CN115508958A CN115508958A CN202211220531.2A CN202211220531A CN115508958A CN 115508958 A CN115508958 A CN 115508958A CN 202211220531 A CN202211220531 A CN 202211220531A CN 115508958 A CN115508958 A CN 115508958A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 97
- 238000013528 artificial neural network Methods 0.000 title claims abstract description 22
- 238000007493 shaping process Methods 0.000 claims abstract description 20
- 230000003321 amplification Effects 0.000 claims abstract description 18
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 18
- 238000001228 spectrum Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 30
- 239000004065 semiconductor Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
- G02B6/425—Optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4215—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/06—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons
- G06N3/067—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using optical means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
Abstract
The invention discloses a photonic chip based on an optical neural network, belongs to the technical field of signal processing, and can solve the problems that an existing realization system based on the optical neural network is large in size and not easy to miniaturize and integrate. The photonic chip includes: the laser light source, and a light splitting component, a wave spectrum shaping component, a modulation amplification component, a time delay output component and a signal receiving component which are arranged on a light path in sequence; the laser light source is used for emitting laser signals; the optical splitter is used for splitting the laser signal into a plurality of optical signals with different wavelengths; the spectrum shaping component is used for respectively modulating and shaping the optical signals with each wavelength and combining the modulated and shaped optical signals with each wavelength into a beam of optical signal; the modulation amplification component is used for modulating and amplifying the beam-combined optical signal; the delay output element is used for sequentially delaying and outputting the modulated and amplified optical signals according to the wavelength; the signal receiving assembly is used for receiving the optical signals output by the time delay. The invention is used for manufacturing the photonic chip.
Description
Technical Field
The invention relates to a photonic chip based on an optical neural network, and belongs to the technical field of signal processing.
Background
An Optical Neural Network (ONN) is a promising method for replacing an artificial neural network, and can effectively reduce partial operations of both software and electronic hardware. The most energy-consuming and time-consuming part of the artificial neural network is dense matrix multiplication, but in the optical neural network, matrix multiplication can be performed at the speed of light. Non-linearities in an artificial neural network can also be achieved in an optical neural network by non-linear optical elements. Also, once the optical neural network training is complete, this architecture can perform optical signal calculations without additional energy input. In addition, the optical neural network has the characteristics of high bandwidth, high interconnectivity, internal parallel processing and the like. However, the conventional optical neural network-based implementation system generally has the defects of large size, difficulty in miniaturization and integration and the like.
Disclosure of Invention
The invention provides a photonic chip based on an optical neural network, which can solve the problems of large size, difficult miniaturization and difficult integration of the conventional realization system based on the optical neural network.
The invention provides a photonic chip based on an optical neural network, which comprises: the laser light source, and a light splitting component, a wave spectrum shaping component, a modulation amplification component, a time delay output component and a signal receiving component which are arranged on a light path in sequence;
the laser light source is used for emitting laser signals;
the optical splitter is used for splitting the laser signal into a plurality of optical signals with different wavelengths;
the spectrum shaping component is used for respectively modulating and shaping the optical signals with various wavelengths and combining the modulated and shaped optical signals with various wavelengths into a beam of optical signal;
the modulation amplification component is used for modulating and amplifying the bundled optical signals;
the delay output element is used for sequentially delaying and outputting the modulated and amplified optical signals according to the wavelength;
the signal receiving assembly is used for receiving the optical signals output by the time delay.
Optionally, the spectrum shaping component includes a loading element, a plurality of transmission elements, a plurality of first modulation elements, and a first beam combiner; the first modulation pieces correspond to the transmission pieces one by one;
one end of the loading piece is connected with the light splitting piece, and the other end of the loading piece is connected with the transmission piece; the other end of the transmission piece is connected with the first beam combining piece;
the loading piece is used for loading a plurality of optical signals with different wavelengths divided by the optical splitting piece onto each transmission piece respectively;
the transmission piece is used for transmitting optical signals thereon;
each first modulation piece is arranged on the transmission piece corresponding to the first modulation piece and is used for modulating and shaping the optical signals transmitted on the transmission piece;
the first beam combining component is used for combining the modulated and shaped optical signals with various wavelengths into one optical signal.
Optionally, the modulation and amplification assembly includes a second modulation element and an amplification element;
one end of the second modulation part is connected with the first beam combining part, the other end of the second modulation part is connected with the amplification part, and the other end of the amplification part is connected with the delay output part;
the second modulation part is used for modulating the optical signal combined by the first beam combining part;
the amplifying part is used for amplifying the optical signal modulated by the second modulating part.
Optionally, the signal receiving assembly includes a second combiner and N signal receivers; n is an integer greater than or equal to 2;
one end of the second beam combining piece is connected with the delay output piece, and the other end of the second beam combining piece is connected with the plurality of signal receiving pieces;
the second beam combining component is used for combining the optical signals with various wavelengths output in a time delay manner into N light beams;
the signal receiving parts are used for receiving corresponding light beams.
Optionally, the light splitter is a micro-ring.
Optionally, the transmission member is a waveguide; the first modulation part is a micro-ring or an electro-optical modulator; the loading piece and/or the first beam combining piece are/is arrayed waveguide gratings.
Optionally, the second modulation element is an electro-optical modulator;
the amplifying element is a semiconductor optical amplifier.
Optionally, the delay output element is a reflective optical grating.
Optionally, the second beam combiner is an arrayed waveguide grating; the signal receiving part is a photoelectric detector.
The invention can produce the beneficial effects that:
according to the photonic chip based on the optical neural network, the wave spectrum shaping component, the modulation amplification component and the delay output component are integrated on the same chip, so that the structural size is greatly reduced, and the requirements of product miniaturization and integration are favorably met.
Drawings
Fig. 1 is a schematic structural diagram of a photonic chip based on an optical neural network according to an embodiment of the present invention.
List of parts and reference numerals:
11. a laser light source; 12. a light splitting member; 13. a loading member; 14. a transmission member; 15. a first pod; 16. a first combining piece; 17. a second pod; 18. an enlargement; 19. a delay output element; 20. a second beam combiner; 21. a signal receiving member.
Detailed Description
The present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.
An embodiment of the present invention provides a photonic chip based on an optical neural network, as shown in fig. 1, including: a laser light source 11, and a light splitting component 12, a spectrum shaping component, a modulation amplification component, a time delay output component 19 and a signal receiving component which are arranged on the light path in sequence.
The laser light source 11 is used for emitting a laser signal; in practical applications, the Laser light source 11 may be an LD (Laser Diode) semiconductor Laser.
The optical splitter 12 is used to split the laser signal into a plurality of optical signals of different wavelengths. The number of optical signals with different wavelengths split by the optical splitter 12 is not limited in the embodiments of the present invention, and those skilled in the art can set the number according to actual situations or the upper functional limit that can be achieved by the existing hardware. For example, if 3 × 3 convolution kernels are used for signal processing, the laser signal can be divided into 3 × 9=27 optical signals with different wavelengths; if 4 × 3 convolution kernels are used for signal processing, the laser signal can be divided into 4 × 9=36 optical signals of different wavelengths. In practical applications, the light splitter 12 may be a micro-ring.
The spectrum shaping component is used for modulating and shaping the optical signals with each wavelength respectively and combining the modulated and shaped optical signals with each wavelength into one optical signal.
Specifically, the spectrum shaping component may include a loading element 13, a plurality of transmission elements 14, a plurality of first modulation elements 15, and a first beam combiner 16; the first modulation parts 15 correspond to the transmission parts 14 one by one; one end of the loading piece 13 is connected with the light splitting piece 12, and the other end is connected with the transmission piece 14; the other end of the transport element 14 is connected to a first combiner 16.
The loading member 13 is used for loading the optical signals of different wavelengths divided by the optical splitter 12 to the transmission members 14, respectively. The loading member 13 may be AWG (Arrayed Waveguide Grating).
The transmission member 14 is used to transmit optical signals thereon. The transmission member 14 may be a waveguide.
Each first modulation element 15 is arranged on the transmission element 14 corresponding to the first modulation element and is used for modulating and shaping the optical signal transmitted on the transmission element 14; for example, if the laser signal is divided into 27 optical signals with different wavelengths, 27 transmission elements 14 and 27 first modulation elements 15 are required; if the laser signal is divided into 36 optical signals of different wavelengths, 36 transmission elements 14 and 36 first modulation elements 15 are provided. In practical applications, the first modulation element 15 may be a micro-ring or MZI (Mach-Zehnder Interferometer, also called an electro-optic modulator).
The first beam combiner 16 is configured to combine the modulated and shaped optical signals with different wavelengths into a single optical signal. The first combiner 16 may be an AWG (arrayed waveguide grating).
The modulation amplification component is used for modulating and amplifying the combined optical signal.
Specifically, the modulation and amplification assembly includes a second modulation element 17 and an amplification element 18; one end of the second modulation member 17 is connected to the first combining member 16, the other end is connected to the amplifying member 18, and the other end of the amplifying member 18 is connected to the delay output member 19.
The second modulation unit 17 is configured to modulate the optical signal combined by the first combining unit 16. In practical applications, the second modulation element 17 may be an MZI (electro-optical modulator).
The amplifying element 18 is used for amplifying the optical signal modulated by the second modulating element 17. The Amplifier 18 may be an SOA (Semiconductor Optical Amplifier).
The delay output element 19 is used for sequentially delaying and outputting the modulated and amplified optical signals according to the wavelength; in the embodiment of the present invention, the delay output element 19 may be a reflective grating.
The signal receiving assembly is used for receiving the optical signals output by the time delay.
Specifically, the signal receiving assembly includes a second combiner 20 and N signal receiving parts 21; n is an integer greater than or equal to 2; the second combiner 20 has one end connected to the delay output element 19 and the other end connected to the plurality of signal receiving elements 21.
The second beam combiner 20 is configured to combine the optical signals with each wavelength output in a delayed manner into N optical beams; for example, if 3 × 3 convolution kernels are used for signal processing, the laser signal is divided into 27 optical signals with different wavelengths; then N here may be set to 3, that is, the second beam combining element 20 combines the optical signals of the respective wavelengths outputted with time delay into 3 optical beams (wavelengths λ 1 to λ 9 into a first beam; λ 10 to λ 18 into a second beam; λ 19 to λ 27 into a third beam), and then receives the 3 optical beams by using the 3 signal receiving elements 21; if 4 convolution kernels of 3 x 3 are used for signal processing, dividing the laser signal into 36 optical signals with different wavelengths; n may be set to 4 here, that is, the second beam combining element 20 combines the optical signals of the respective wavelengths output with time delay into 4 light beams (λ 1 to λ 9 into a first beam; λ 10 to λ 18 into a second beam; λ 19 to λ 27 into a third beam; λ 28 to λ 36 into a fourth beam), and then receives the 4 light beams using the 4 signal receiving elements 21.
The signal receiving part 21 is used for receiving a corresponding light beam.
In practical applications, the second combiner 20 may be an AWG (arrayed waveguide grating); the signal receiving part 21 may be a PD (photo electric Detector).
According to the photonic chip based on the optical neural network, the wave spectrum shaping component, the modulation amplification component and the delay output component 19 are integrated on the same chip, so that the structural size is greatly reduced, and the requirements of product miniaturization and integration are favorably met.
Although the present invention has been described with reference to a few preferred embodiments, it should be understood that various changes and modifications can be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A photonic chip based on an optical neural network, comprising: the laser light source, and a light splitting component, a wave spectrum shaping component, a modulation amplification component, a time delay output component and a signal receiving component which are arranged on the light path in sequence;
the laser light source is used for emitting laser signals;
the optical splitter is used for splitting the laser signal into a plurality of optical signals with different wavelengths;
the spectrum shaping component is used for respectively modulating and shaping the optical signals with various wavelengths and combining the modulated and shaped optical signals with various wavelengths into a beam of optical signal;
the modulation amplification component is used for modulating and amplifying the optical signal after the beam combination;
the delay output element is used for sequentially delaying and outputting the modulated and amplified optical signals according to the wavelength;
the signal receiving assembly is used for receiving the optical signals output by the time delay.
2. The photonic chip of claim 1, wherein the spectrum shaping component comprises a loading element, a plurality of transmission elements, a plurality of first modulation elements, and a first beam combiner; the first debugging parts correspond to the transmission parts one by one;
one end of the loading piece is connected with the light splitting piece, and the other end of the loading piece is connected with the transmission piece; the other end of the transmission piece is connected with the first beam combining piece;
the loading part is used for loading a plurality of optical signals with different wavelengths divided by the light splitting part onto each transmission part respectively;
the transmission piece is used for transmitting optical signals on the transmission piece;
each first modulation piece is arranged on the corresponding transmission piece and used for modulating and shaping the optical signal transmitted on the transmission piece;
the first beam combining component is used for combining the modulated and shaped optical signals with various wavelengths into one optical signal.
3. The photonic chip of claim 2, wherein the modulation amplification assembly comprises a second modulation and an amplification;
one end of the second modulation part is connected with the first beam combining part, the other end of the second modulation part is connected with the amplifying part, and the other end of the amplifying part is connected with the delay output part;
the second modulation part is used for modulating the optical signal combined by the first beam combining part;
the amplifying part is used for amplifying the optical signal modulated by the second modulating part.
4. The photonic chip of claim 1, wherein the signal receiving assembly comprises a second combiner and N signal receiving elements; n is an integer greater than or equal to 2;
one end of the second beam combining piece is connected with the delay output piece, and the other end of the second beam combining piece is connected with the plurality of signal receiving pieces;
the second beam combining component is used for combining the optical signals with various wavelengths output in a time delay manner into N light beams;
the signal receiving parts are used for receiving corresponding light beams.
5. The photonic chip of claim 1, wherein the light splitter is a microring.
6. The photonic chip of claim 2, wherein said transmission member is a waveguide; the first modulation element is a micro-ring or an electro-optical modulator; the loading piece and/or the first beam combining piece are/is arrayed waveguide gratings.
7. The photonic chip of claim 3, wherein said second modulation is an electro-optic modulator;
the amplifying part is a semiconductor optical amplifier.
8. The photonic chip of claim 1, wherein the time delay output is a reflective optical grating.
9. The photonic chip of claim 4, wherein the second beam combiner is an arrayed waveguide grating; the signal receiving part is a photoelectric detector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211220531.2A CN115508958A (en) | 2022-10-08 | 2022-10-08 | Photon chip based on optical neural network |
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| CN202211220531.2A CN115508958A (en) | 2022-10-08 | 2022-10-08 | Photon chip based on optical neural network |
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| US20210248454A1 (en) * | 2020-02-12 | 2021-08-12 | Fujitsu Limited | Optical communication element and optical neural network |
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| CN114565091A (en) * | 2022-02-16 | 2022-05-31 | 武汉光谷信息光电子创新中心有限公司 | Optical neural network device, chip and optical implementation method for neural network calculation |
| CN114815959A (en) * | 2022-06-27 | 2022-07-29 | 之江实验室 | Photon tensor calculation acceleration method and device based on wavelength division multiplexing |
| CN114970836A (en) * | 2022-07-28 | 2022-08-30 | 浙江大学 | Reservoir neural network implementation method and system, electronic equipment and storage medium |
-
2022
- 2022-10-08 CN CN202211220531.2A patent/CN115508958A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477938A (en) * | 2016-06-02 | 2019-03-15 | 麻省理工学院 | Device and method for optical neural network |
| US20210248454A1 (en) * | 2020-02-12 | 2021-08-12 | Fujitsu Limited | Optical communication element and optical neural network |
| CN111683304A (en) * | 2020-05-13 | 2020-09-18 | 中国科学院西安光学精密机械研究所 | All-optical diffraction neural network and system realized on optical waveguide and/or optical chip |
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| CN114510213A (en) * | 2020-11-17 | 2022-05-17 | 英特尔公司 | Optical nonlinear and amplifying device for optical neural network |
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| CN114970836A (en) * | 2022-07-28 | 2022-08-30 | 浙江大学 | Reservoir neural network implementation method and system, electronic equipment and storage medium |
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