CN114297133A - Path programmable multifunctional microwave photon signal processing method - Google Patents
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Abstract
The invention discloses a path programmable multifunctional microwave photon signal processing method, which is characterized in that various functional devices such as a code converter, a nonlinear wavelength converter, a high-speed modulator, a wavelength division multiplexer, an optical decoder, an optical sampler and the like are prepared in parallel on a single chip, and a signal light field transmission path is controlled by a chip integrated logic circuit to pass through different devices as required, and pass through multi-chip cascade or single-chip time division multiplexing to realize path programmable multifunctional microwave photon signal processing. The invention provides a feasible design scheme for a standardized microwave photon signal processing system, can execute various functions as required through the microwave photon signal processing chip with a unified structure, and provides an important solution scheme for the research and development of a microwave photon signal processing system with programmable logic and software definition.
Description
Technical Field
The invention belongs to the interdisciplinary field of integrated optics, optical communication and microwave photonics, in particular to a method for realizing free switching of multiple microwave photon signal processing functions by using a path selection optical path to switch a signal optical field transmission path and using a single integrated chip, and particularly relates to a path programmable multifunctional microwave photon signal processing method, a system and a storage medium.
Background
The microwave photon signal processing system is a system for realizing electrical signal processing by an optical means, is mainly realized by a free space optical path or an all-fiber optical path, transmits an optical field carrying information in a free space or an optical fiber, and controls a photoelectric device to realize optical field regulation and control by an external circuit. However, the free space optical path and the all-fiber optical path have problems of large system size, poor stability, difficult coordination control, slow upgrading and updating rate, and the like, and are difficult to be applied in a large scale in an outdoor environment. More importantly, the design difficulty of the control circuit is seriously increased by the loosely coupled integration mode of all photoelectric devices. On the other hand, the chip integrated optical circuit has the advantages of small volume, low power consumption, stable performance, high integration and the like, and is particularly suitable for being used as a substitute scheme of a free space optical circuit and an all-fiber optical circuit of a traditional discrete device to construct optical systems such as a microwave photon signal processing system and the like with large system scale, complex structural function and numerous devices. In particular, the chip integrated optical circuit represented by silicon on insulator is highly compatible with the traditional integrated circuit process, and the characteristic makes it possible to construct a chip-scale photoelectric hybrid system.
At present, the microwave photon signal processing still stays in a small-scale experiment stage, and can only realize specific functions through a single or a plurality of discrete devices, so that a standardized microwave photon signal processing system structure capable of integrating various functions is lacked.
Disclosure of Invention
Based on the problems of the prior art, the technical problems to be solved by the invention are as follows: how to integrate a plurality of discrete devices on a single chip, each device can be adjusted and execute different functions by controlling voltage, a programmable logic signal control path is used for selecting a light path to enable a signal light field to be transmitted along different paths and pass through different devices, and flexible switching of microwave photon signal processing functions is realized by multi-chip cascade or single-chip multiplexing.
Aiming at the defects in the prior art, the invention aims to provide a path programmable multifunctional microwave photon signal processing method, a signal light field is input into a path selection light path formed by a cascade Mach-Zehnder interferometer through a grating coupler, the signal light field can be artificially selected to pass through four different optical paths by applying bias voltage to the three phase shifters through an external circuit, multiple devices are prepared and integrated on a single chip, independent control and function realization of each device are realized through external bias voltage, a cascaded Mach-Zehnder interferometer is used for switching a signal light field to an optical path where different devices are positioned according to requirements through the external bias voltage, the signal light field is led out from a specific port, and a microwave photon signal processing function capable of being freely switched is realized, by cascading a plurality of sets of chips or enabling signals to repeatedly pass through the same chip for a plurality of times, the hybrid multiplexing of various microwave photon signal processing functions is realized.
Preferably, a nonlinear wavelength conversion or nonlinear multicast broadcaster based on the four-wave mixing effect, an intensity modulator, a micro-ring filter and an RZ-NRZ transcoder based on the mach-zehnder interferometer, and a broadband wavelength division multiplexer based on the cascaded micro-ring cavity are prepared on the above four optical paths, respectively.
Preferably, the signal optical field passing through each optical path is subjected to the action of each functional device, generates time domain or frequency domain variation and is output from the right side.
Preferably, one or more of an integrated code converter, a nonlinear wavelength converter, a high-speed modulator, a wavelength division multiplexer, an optical inverse decoder and an optical sampler are prepared in parallel on the single chip.
Preferably, the signal light field transmission path is controlled by the chip integrated logic circuit to pass through different devices as required, and the path programmable multifunctional microwave photon signal processing is realized by multi-chip cascade or single-chip time division multiplexing.
Preferably, the method comprises:
s101, designing, preparing and independently controlling each functional device, preparing and integrating a plurality of devices on a single chip, and realizing independent control and function realization of each device through external bias voltage;
s102, designing, preparing and independently controlling a path selection light path, switching a signal light field to an optical path where different devices are located as required by using a cascade Mach-Zehnder interferometer through an external bias voltage, and leading out the signal light field from a specific port to realize a microwave photon signal processing function capable of being freely switched;
s103, multiplexing chips, namely, realizing the hybrid multiplexing of multiple microwave photon signal processing functions by cascading multiple sets of chips or enabling signals to repeatedly pass through the same chip for multiple times.
Preferably, the method comprises:
s201, preparing waveguide structures of all devices through a standard preparation process of a chip integrated optical circuit, connecting all devices through a path selection optical circuit and a transmission waveguide, and preparing a grating coupler to lead a signal optical field and a pumping optical field with functions of nonlinear wavelength conversion and the like into or out of a chip;
s202, preparing a path selection optical path and control electrodes of each device through a standard process of a chip integrated circuit, and connecting the control electrodes with an external circuit by using an integrated lead;
and S203, loading the digital logic control voltage to a path selection light path and phase shifters of all devices through an external circuit, realizing flexible switching and multiple transmission of a signal light field transmission path by controlling the path selection light path, and finally realizing the path programmable multifunctional microwave photon signal processing formed by combining different devices.
Preferably, the signal light field can pass through different functional devices on different optical paths one or more times through bias voltage distribution on a plurality of control electrodes, and conversion from mathematical logic (input quantity) to specific functions (output quantity) of microwave photon signal processing is realized according to the sequence of logic definition → bias voltage distribution → optical paths → different devices → combination of a plurality of functions after passing through for a plurality of times.
A system for realizing the path programmable multifunctional microwave photon signal processing method comprises a code type converter, a nonlinear wavelength converter, a high-speed modulator, a wavelength division multiplexer, an optical decoder, an optical sampler, a cascade Mach-Zehnder interferometer, a micro-ring filter, an RZ-NRZ transcoder and a broadband wavelength division multiplexer, and also comprises a design preparation and independent control module of a functional device, a design preparation and independent control module of a path selection optical path and a chip multiplexing module, wherein,
the design preparation and independent control module of the functional device is used for preparing and integrating a plurality of devices on a single chip and realizing the independent control and function realization of each device through external bias voltage;
the path selection optical path design preparation and independent control module is used for switching a signal optical field to an optical path where different devices are located as required by using a cascade Mach-Zehnder interferometer through an external bias voltage and leading the signal optical field out from a specific port so as to realize a microwave photon signal processing function capable of being freely switched;
and the chip multiplexing module is used for realizing the hybrid multiplexing of various microwave photon signal processing functions by cascading a plurality of sets of chips or enabling signals to repeatedly pass through the same chip for a plurality of times.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the above-mentioned method.
A computer program product comprising computer programs/instructions which, when executed by a processor, implement the steps of the above-described method.
Compared with the prior art, the invention has the following advantages:
(1) the traditional microwave photon signal processing system can only execute specific functions and has strict requirements on performance parameters and front and back sequences of devices, the path programmable multifunctional microwave photon signal processing method provided by the invention can realize the random switching of various different functions through a chip which is uniformly designed and prepared, and the microwave photon communication signal processing capability is greatly improved;
(2) the invention provides a logic programmable microwave photon signal processing concept, namely, a compiling corresponding relation is established between digital logic and a specific microwave photon signal processing function, and a foundation is laid for the development of an accurate, standardized and diversified microwave photon information system.
(3) The invention can provide an important solution for the design of a standardized photoelectric device and the development of a software-defined microwave photonic chip.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 shows a schematic diagram of the operation principle of the path programmable multifunctional microwave photon signal processing of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The invention provides an embodiment of a path programmable multifunctional microwave photon signal processing method, a signal light field is input into a path selection light path formed by a cascade Mach-Zehnder interferometer through a grating coupler, the signal light field can be artificially selected to pass through four different optical paths by applying bias voltage to the three phase shifters through an external circuit, multiple devices are prepared and integrated on a single chip, independent control and function realization of each device are realized through external bias voltage, a cascaded Mach-Zehnder interferometer is used for switching a signal light field to an optical path where different devices are positioned according to requirements through the external bias voltage, the signal light field is led out from a specific port, and a microwave photon signal processing function capable of being freely switched is realized, by cascading a plurality of sets of chips or enabling signals to repeatedly pass through the same chip for a plurality of times, the hybrid multiplexing of various microwave photon signal processing functions is realized.
In some embodiments, four optical paths are prepared with four-wave mixing effect based nonlinear wavelength conversion or nonlinear multi-spot broadcaster, mach-zehnder interferometer based intensity modulator, micro-ring filter and RZ-NRZ transcoder, and cascaded micro-ring cavity based broadband wavelength division multiplexer, respectively.
In some embodiments, the signal optical field passing through each optical path is subjected to each functional device, produces a time domain or frequency domain variation and is output from the right side.
In some embodiments, one or more of an integrated transcoder, a nonlinear wavelength converter, a high speed modulator, a wavelength division multiplexer, an optical inverse, and an optical sampler are fabricated in parallel on a single chip.
In some embodiments, the programmable multifunctional microwave photonic signal processing is realized by controlling the signal light field transmission path through a chip integrated logic circuit to pass through different devices as required, through multi-chip cascade connection or single-chip time division multiplexing.
The invention provides an embodiment of a path programmable multifunctional microwave photon signal processing method, which comprises the following steps:
s101, designing, preparing and independently controlling each functional device, preparing and integrating a plurality of devices on a single chip, and realizing independent control and function realization of each device through external bias voltage;
s102, designing, preparing and independently controlling a path selection light path, switching a signal light field to an optical path where different devices are located as required by using a cascade Mach-Zehnder interferometer through an external bias voltage, and leading out the signal light field from a specific port to realize a microwave photon signal processing function capable of being freely switched;
s103, multiplexing chips, namely, realizing the hybrid multiplexing of multiple microwave photon signal processing functions by cascading multiple sets of chips or enabling signals to repeatedly pass through the same chip for multiple times.
The invention provides an embodiment of a path programmable multifunctional microwave photon signal processing method, which comprises the following steps:
s201, preparing waveguide structures of all devices through a standard preparation process of a chip integrated optical circuit, connecting all devices through a path selection optical circuit and a transmission waveguide, and preparing a grating coupler to lead a signal optical field and a pumping optical field with functions of nonlinear wavelength conversion and the like into or out of a chip;
s202, preparing a path selection optical path and control electrodes of each device through a standard process of a chip integrated circuit, and connecting the control electrodes with an external circuit by using an integrated lead;
and S203, loading the digital logic control voltage to a path selection light path and phase shifters of all devices through an external circuit, realizing flexible switching and multiple transmission of a signal light field transmission path by controlling the path selection light path, and finally realizing the path programmable multifunctional microwave photon signal processing formed by combining different devices.
As shown in fig. 1, an embodiment of a path programmable multifunctional microwave photonic signal processing system architecture is illustrated: the signal light field is input into a path selection light path formed by the cascade Mach-Zehnder interferometer through the grating coupler, and the signal light field can be artificially selected to pass through four different optical paths by applying bias voltage to the three phase shifters through the external circuit.
Prepared separately on four optical paths:
(1) a nonlinear wavelength conversion or nonlinear multicast broadcaster based on four-wave mixing effect;
(2) an intensity modulator based on a mach-zehnder interferometer;
(3) a micro-loop filter and an RZ-NRZ transcoder;
(4) a broadband wavelength division multiplexer based on a cascade micro-ring cavity.
The signal light field passing through each optical path is acted by each functional device to generate time domain or frequency domain change and output from the right side. In fig. 1, the external circuit at the bottom has 12 external electrodes, and the external electrodes from left to right are respectively No. 1-12 external electrodes. In the above process, the precise control of the No. 1-3 and No. 10-12 external electrodes enables the signal light field to pass through different optical paths, and the No. 4-9 external electrodes control each functional device. The figure shows a chip multiplexing method, i.e. connecting the right lower output port with the left lower input port, and controlling to make the signal light field pass through the chip for multiple times and realize free switching of different functions, taking the figure as an example, when the number of times of passing through the chip is N, the type of the microwave photon signal processing function which can be realized is 4N。
The invention provides an embodiment of a path programmable multifunctional microwave photon signal processing method, which is characterized in that various functional devices such as a code converter, a nonlinear wavelength converter, a high-speed modulator, a wavelength division multiplexer, an optical decoder, an optical sampler and the like are prepared in parallel on a single chip, and a signal light field transmission path is controlled by a chip integrated logic circuit to pass through different devices as required, and pass through multi-chip cascade or single-chip time division multiplexing to realize path programmable multifunctional microwave photon signal processing.
In some embodiments, the functional device can be prepared by standard processes of chip integrated optical circuits, has a certain degree of freedom of structural design, can efficiently and losslessly transmit an optical field, can adjust parameters by changing the refractive index of a waveguide, and can adjust the principle including but not limited to thermo-optical effect, electro-optical effect, photoelectric effect and the like, typical functions include but not limited to nonlinear wavelength conversion, nonlinear multipoint broadcasting, optical switching, band-pass filtering, band-stop filtering, code type conversion and the like, and the used material platform includes but not limited to silicon on insulator, hydrogen-loaded amorphous silicon, silicon nitride, silicon carbide, chalcogenide glass, three five groups of aluminum gallium arsenic, three five groups of indium phosphide and the like, and can adopt a single material integration method or a multi-material mixed integration method.
In some embodiments, the chip integrated logic circuit can be prepared by a chip integrated circuit standard process, has a certain degree of structural design freedom, can change the refractive index of a transmission waveguide in a filter structure to realize the central wavelength tuning of the filter, can be connected to an external logic circuit through a control electrode-integrated wire-pin electrode, can receive bias voltages with different intensities, does not limit the structural size and wiring parameters of the control electrode, the integrated wire and the pin electrode, and does not limit the interface definition principle and the logic compiling mode.
In some embodiments, path programmable microwave photonic signal processing may pass a signal light field one or more times through different functional devices on different optical paths by bias voltage distribution on multiple control electrodes, enabling conversion from mathematical logic (input quantity) to specific functions of microwave photonic signal processing (output quantity) in the order of logical definition → bias voltage distribution → optical path → different device → combination of multiple functions after multiple passes; the programmable input quantity can be binary logic, discrete logic or continuous variable, and does not limit programming language, interface definition and compiling rules.
The invention also provides an embodiment of a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the above-mentioned method.
The invention also provides an embodiment of a computer program which, when executed by a processor, implements the above method.
Compared with the prior art, the invention has the following advantages:
firstly, the traditional microwave photon signal processing system can only execute specific functions and has strict requirements on performance parameters and front and back sequences of devices, the path programmable multifunctional microwave photon signal processing method provided by the invention can realize the random switching of various different functions through a chip which is uniformly designed and prepared, and the microwave photon communication signal processing capability is greatly improved;
secondly, the invention provides a logic programmable microwave photon signal processing concept, namely, a compiling corresponding relation is established between digital logic and a specific microwave photon signal processing function, and a foundation is laid for the development of an accurate, standardized and diversified microwave photon information system.
In addition, the invention can provide an important solution for the design of standardized photoelectric devices and the development of software-defined microwave photonic chips.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A path programmable multifunctional microwave photon signal processing method is characterized in that a signal light field is input into a path selection light path formed by a cascade Mach-Zehnder interferometer through a grating coupler, bias voltage is applied to three phase shifters through an external circuit, the signal light field can be manually selected to pass through four different optical paths, a plurality of devices are prepared and integrated on a single chip, independent control and function realization of each device are realized through the external bias voltage, the cascade Mach-Zehnder interferometer is used for switching the signal light field to the optical paths where different devices are located according to requirements through the external bias voltage, the signal light field is led out from a specific port, a microwave photon signal processing function capable of being freely switched is realized, and mixed multiplexing of multiple microwave photon signal processing functions is realized through cascading multiple sets of chips or enabling signals to repeatedly pass through the same chip.
2. The path programmable multifunctional microwave photonic signal processing method of claim 1, wherein a nonlinear wavelength conversion or nonlinear multipoint broadcaster based on four-wave mixing effect, an intensity modulator, a micro-ring filter and an RZ-NRZ transcoder based on mach-zehnder interferometer and a broadband wavelength division multiplexer based on cascaded micro-ring cavities are prepared on the four optical paths, respectively.
3. The path programmable multifunctional microwave photonic signal processing method of claim 2, wherein the signal optical field passing through each optical path is acted by each functional device to generate time domain or frequency domain variation and output from the right side.
4. The path programmable multi-functional microwave photonic signal processing method of claim 1, the single chip fabricated in parallel with one or more of an integrated transcoder, a nonlinear wavelength converter, a high speed modulator, a wavelength division multiplexer, an optical inverse decoder, and an optical sampler.
5. The path programmable multifunctional microwave photonic signal processing method of claim 4, wherein the path programmable multifunctional microwave photonic signal processing is implemented by controlling the signal optical field transmission path through a chip integrated logic circuit to pass through different devices as required, through multi-chip cascade or single-chip time division multiplexing.
6. The path programmable multi-functional microwave photonic signal processing method of claim 1, comprising:
s101, designing, preparing and independently controlling each functional device, preparing and integrating a plurality of devices on a single chip, and realizing independent control and function realization of each device through external bias voltage;
s102, designing, preparing and independently controlling a path selection light path, switching a signal light field to an optical path where different devices are located as required by using a cascade Mach-Zehnder interferometer through an external bias voltage, and leading out the signal light field from a specific port to realize a microwave photon signal processing function capable of being freely switched;
s103, multiplexing chips, namely, realizing the hybrid multiplexing of multiple microwave photon signal processing functions by cascading multiple sets of chips or enabling signals to repeatedly pass through the same chip for multiple times.
7. The path programmable multi-functional microwave photonic signal processing method of claim 1, comprising:
s201, preparing waveguide structures of all devices through a standard preparation process of a chip integrated optical circuit, connecting all devices through a path selection optical circuit and a transmission waveguide, and preparing a grating coupler to lead a signal optical field and a pumping optical field with functions of nonlinear wavelength conversion and the like into or out of a chip;
s202, preparing a path selection optical path and control electrodes of each device through a standard process of a chip integrated circuit, and connecting the control electrodes with an external circuit by using an integrated lead;
and S203, loading the digital logic control voltage to a path selection light path and phase shifters of all devices through an external circuit, realizing flexible switching and multiple transmission of a signal light field transmission path by controlling the path selection light path, and finally realizing the path programmable multifunctional microwave photon signal processing formed by combining different devices.
8. The path programmable multifunctional microwave photonic signal processing method according to one of claims 1 to 7, wherein the signal optical field is passed one or more times through different functional devices on different optical paths by bias voltage distribution on a plurality of control electrodes, and the conversion from mathematical logic (input quantity) to specific functions (output quantity) of microwave photonic signal processing is realized in the order of logic definition → bias voltage distribution → optical path → different devices → combination of a plurality of functions after multiple passes.
9. A system for implementing the path programmable multifunctional microwave photonic signal processing method according to claims 1 to 8, comprising a code pattern converter, a nonlinear wavelength converter, a high-speed modulator, a wavelength division multiplexer, an optical inverse code device, an optical sampler, a cascaded Mach-Zehnder interferometer, a micro-ring filter, an RZ-NRZ transcoder, a broadband wavelength division multiplexer, a functional device design preparation and independent control module, a path selection optical path design preparation and independent control module and a chip multiplexing module, wherein,
the design preparation and independent control module of the functional device is used for preparing and integrating a plurality of devices on a single chip and realizing the independent control and function realization of each device through external bias voltage;
the path selection optical path design preparation and independent control module is used for switching a signal optical field to an optical path where different devices are located as required by using a cascade Mach-Zehnder interferometer through an external bias voltage and leading the signal optical field out from a specific port so as to realize a microwave photon signal processing function capable of being freely switched;
and the chip multiplexing module is used for realizing the hybrid multiplexing of various microwave photon signal processing functions by cascading a plurality of sets of chips or enabling signals to repeatedly pass through the same chip for a plurality of times.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 8.
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