Frequency conversion method of microwave photon signal based on optical delay line array

Abstract

The present invention discloses a microwave photon signal frequency conversion method based on an optical delay line array, which loads a high-speed microwave signal onto an optical carrier to generate a microwave photon signal, separates the microwave photon signal into multiple channels using an optical beam splitter and applies different time delays through a tunable delay line array, and uses a unified low-frequency sampling waveform to sample and process different timing positions of each channel of signal, and finally frequency-converts one high-speed signal into multiple low-speed signals. The present invention can effectively solve the "electronic bottleneck" faced by traditional electronic systems in processing high-speed microwave signals, improve the microwave photon signal processing capability through time domain serial-to-parallel conversion, reduce the control difficulty of the sampling signal through a tunable all-optical delay line, solve the bottleneck problem of high-speed wireless communication signal processing, and finally provide a solution for high-frequency and ultra-high-frequency wireless communication applications based on microwave photon technology.

Description

Technical Field

[0001] The present invention belongs to the interdisciplinary field of integrated optics, optical communication, wireless communication and microwave photonics, and specifically refers to a method for sampling microwave photon signals through an optical delay line array to achieve high-to-low frequency conversion processing, and more particularly to a microwave photon signal frequency conversion method, system and storage medium based on an optical delay line array. Background Art

[0002] With the rapid development of 5G communication technology, the development and utilization of millimeter waves, submillimeter waves and even terahertz waves have become inevitable. However, due to the "electronic bottleneck" caused by the electron transit time, traditional electronic devices and electronic systems are difficult to adapt to the generation, transmission and processing of ultra-high frequency microwaves. In recent years, researchers have taken a different approach and used photonic principles and methods to solve the above problems, and thus derived a new interdisciplinary subject-microwave photonics. Microwave photonic systems have the advantages of small size, light weight, low energy consumption, large bandwidth, flexible control, and resistance to electromagnetic interference. They can effectively overcome the "electronic bottleneck" and lay a solid foundation for applications such as ultra-wideband wireless access, ultra-high frequency microwave transceiver, microwave photon radar, and microwave photon detection.

[0003] In the field of wireless communications, the greatest contribution of microwave photonics is that it provides a high-speed signal processing method, which is to modulate high-speed microwave signals on optical carriers and process them through all-optical signal processing systems. On the one hand, the optical carrier local oscillator frequency is much higher than the microwave local oscillator frequency, and multiple microwave signals can be carried by a single optical carrier; on the other hand, thanks to the increasing maturity of the optoelectronic device manufacturing process, the performance of the all-optical signal processing system has also improved qualitatively. The all-optical signal processing system implemented by chip integrated optical circuits has the advantages of small size, low power consumption, stable performance, and batch preparation, and can realize high-speed broadband, multi-degree-of-freedom multiplexing, and multi-channel parallel signal processing functions. Summary of the invention

[0004] Based on the problems of the prior art, the technical problem to be solved by the present invention is how to convert microwave signals into microwave photon signals by means of microwave detection, optical modulation and the like, and separate microwave photon signals into multiple paths by means of a cascade optical beam splitter; how to use a tunable optical delay line to time delay each signal; how to use a uniformly controlled sampling waveform for sampling, at which time the information of different time sequence positions of high-speed microwave photon signals will be dispersed and saved in each signal; finally, multiple low-frequency microwave photon signals can be converted into microwave signals by means of a photoelectric detector and a microwave source to complete the frequency conversion process.

[0005] In view of the defects existing in the prior art, the purpose of the present invention is to provide a microwave photon signal frequency conversion method based on an optical delay line array, and propose the design ideas of "optical domain for electrical domain" and "space for time", which can effectively solve the "electronic bottleneck" faced by traditional electronic systems in processing high-speed microwave signals, and realize the exponential improvement of all-optical signal processing capabilities through time domain serial-to-parallel conversion, laying a solid foundation for applications such as ultra-wideband wireless access, ultra-high frequency microwave transceiver, microwave photon radar, and microwave photon detection.

[0006] In order to achieve the above-mentioned effects, the microwave photon signal frequency conversion method based on the optical delay line array provided by the present invention converts the microwave signal into an optical signal, controls the laser light source or the optical modulator to generate the optical signal through the electrical signal generated by microwave detection, or directly uses the microwave signal to control the laser light source or the optical modulator to generate the optical signal; performs the frequency conversion processing of the microwave photon signal in sequence on the time domain series high-speed signal, the time domain parallel high-speed signal, the time domain staggered high-speed signal, and the time domain sampling low-speed signal, and completes the time domain serial-to-parallel conversion using a tunable optical delay line array and a uniformly controlled sampling waveform; converts the optical signal into a microwave signal, controls the microwave source or the microwave modulator to generate the microwave signal through the electrical signal generated by the photoelectric detection, or directly uses the optical signal to control the photogenerated microwave source to generate the microwave signal.

[0007] Preferably, the above method specifically includes:

[0008] S101, electro-optical signal conversion, loading the microwave signal onto an optical carrier through microwave detection and optical modulation to generate a high-speed microwave photon signal;

[0009] S102, time domain serial-to-parallel conversion, separating the high-speed microwave photon signal into multiple optical paths through a cascade optical beam splitter, using a tunable optical delay line array to achieve different optical delays, using a uniformly controlled sampling waveform to sample different timing positions of each signal, and obtaining different low-speed microwave photon signals of each path;

[0010] S103, photoelectric signal conversion, converting multiple low-speed microwave photon signals into microwave signals through photoelectric detectors, microwave sources or other devices, and realizing frequency conversion processing of microwave signals using the microwave photon system as a black box.

[0011] Preferably, the above method converts a high-speed microwave photon signal with a repetition frequency of R into N low-speed microwave photon signals with a repetition frequency of R / N through a cascade optical beam splitter, and groups the high-speed signal into N bits, and outputs the first data of each group in sequence as the first low-speed signal, and the second data of each group in sequence as the second low-speed signal, and similarly, each N-th data of each group is output in sequence as the N-th low-speed signal, wherein N is a natural number.

[0012] Preferably, the method introduces an optical delay of (N-1) / R for the Nth signal through a tunable optical delay line array, and samples each signal using a sampling waveform with clock synchronization, a repetition frequency of R / N, and a time window of 1 / R.

[0013] Preferably, the above-mentioned conversion of microwave signal and optical signal realizes the conversion of effective signal from microwave carrier to optical wave carrier, or from optical wave carrier to microwave carrier.

[0014] Preferably, the above-mentioned microwave signal and optical signal conversion realizes the conversion of effective signals from microwave carrier to optical wave carrier by generating electrical signals through microwave detection to control a laser light source to generate an optical signal, or generates electrical signals through microwave detection to control an optical carrier through an optical modulator to generate an optical signal, or directly uses microwave signals to control a laser light source to generate an optical signal, or directly uses microwave signals to control an optical modulator to generate an optical signal.

[0015] Preferably, the above-mentioned microwave signal and optical signal conversion realizes the conversion of effective signals from optical wave carrier to microwave carrier by generating electrical signals through photoelectric detection to control the microwave source to generate microwave signals, or generates electrical signals through photoelectric detection to control the microwave modulator to generate microwave signals, and directly uses optical signals to control the photogenerated microwave source to generate microwave signals.

[0016] Preferably, the implementation of the above method includes but is not limited to chip integrated optical circuit, free space optical circuit or all-optical fiber optical circuit; the all-optical signal parameters are adjusted according to actual needs, and the optical degrees of freedom of the signal carried include but are not limited to intensity, polarization, phase, time window position, and mode field.

[0017] The present invention provides a system for realizing the above-mentioned microwave photon signal frequency conversion method based on optical delay line array, comprising a system consisting of a microwave detector, a light source, a microwave source, an optical switch, a photoelectric detector, a cascade optical beam splitter, a tunable optical delay line array, and a microwave photon subsystem, and also comprising an electro-optical signal conversion module, a time domain serial-to-parallel conversion module, and an optoelectronic signal conversion module, wherein:

[0018] An electro-optical signal conversion module is used to generate high-speed microwave photon signals by loading microwave signals onto optical carriers through microwave detection and optical modulation;

[0019] The time-domain serial-to-parallel conversion module is used to separate the high-speed microwave photon signal into multiple optical paths through a cascade optical beam splitter, realize different optical delays using a tunable optical delay line array, and sample different timing positions of each signal using a uniformly controlled sampling waveform to obtain different low-speed microwave photon signals of each path;

[0020] The photoelectric signal conversion module is used to convert multiple low-speed microwave photon signals into microwave signals through photoelectric detectors, microwave sources or other devices, and realize frequency conversion processing of microwave signals using the microwave photon system as a black box.

[0021] A computer-readable storage medium stores a computer program, which implements the above method when executed by a processor.

[0022] A computer program product comprises a computer program / instruction, which implements the steps of the above method when executed by a processor.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The present invention proposes a design concept of "optical domain replacing electrical domain". Through the complete process of microwave → optical wave → processing → optical wave → microwave, it effectively breaks through the "electronic bottleneck" faced by traditional electronic devices and electronic systems when processing high-speed microwave signals, and realizes the performance improvement of microwave photonic technology for high-speed microwave signal processing;

[0025] 2. The present invention proposes a "space-for-time" design concept, which effectively utilizes the technical advantages of chip integrated optical circuits in building ultra-large-scale optoelectronic information systems, and realizes the time domain dislocation and separate sampling of high-speed microwave photon signals through optical delay lines, providing a new technical solution for high-speed microwave signal frequency conversion processing;

[0026] 3. The present invention can enrich microwave signal processing functions and improve microwave signal processing capabilities by adding optical signal processing system functions and reconstructing the chip integrated optical path layout, and is expected to provide an important reference for modular, precise, standardized and diversified microwave photonic systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following briefly introduces the drawings required for use in the embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 The schematic diagram of the working principle of microwave photon signal frequency conversion based on the optical delay line array of the present invention is shown. DETAILED DESCRIPTION

[0029] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Examples. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0031] The present invention provides an embodiment of a microwave photon signal frequency conversion method based on an optical delay line array, which converts a microwave signal into an optical signal, controls a laser light source or an optical modulator to generate an optical signal through an electrical signal generated by microwave detection, or directly uses the microwave signal to control the laser light source or the optical modulator to generate an optical signal; performs frequency conversion processing of a time-domain series high-speed signal, a time-domain parallel high-speed signal, a time-domain staggered high-speed signal, and a time-domain sampling low-speed signal in sequence, and completes time-domain serial-to-parallel conversion using a tunable optical delay line array and a uniformly controlled sampling waveform; converts an optical signal into a microwave signal, controls a microwave source or a microwave modulator to generate a microwave signal through an electrical signal generated by photoelectric detection, or directly uses an optical signal to control a photogenerated microwave source to generate a microwave signal.

[0032] like Figure 1 As shown, the present invention provides an embodiment of a microwave photon signal frequency conversion method based on an optical delay line array, which converts a 40 GHz high-speed microwave signal into four 10 GHz low-frequency microwave signals, and the specific steps are as follows:

[0033] (1) Using a microwave detector to detect 40 GHz high-speed microwave signals, generate electrical signals, and load them onto a communication band laser light source or a high-speed optical modulator to generate 40 GHz high-speed microwave photon signals;

[0034] (2) The 40 GHz high-speed microwave photon signal is split into four optical paths in equal proportions through a chip-integrated cascade optical beam splitter;

[0035] (3) Introducing tunable optical delays in each optical path, so that the relative delays of the first, second, third, and fourth microwave photon signals can be precisely controlled to be 0, 100 ps, ​​200 ps, ​​and 300 ps;

[0036] (4) A sampling waveform with a repetition frequency of 10 GHz and a duty cycle of 25% is applied to each signal at the same time to obtain four 10 GHz signals; in view of the different optical delays of each signal, the extracted signals are also different. Taking the signal shown in Figure 16 as an example, the first channel extracts the 1st, 5th, 9th, and 13th bit signals, the second channel extracts the 2nd, 6th, 10th, and 14th bit signals, the third channel extracts the 3rd, 7th, 11th, and 15th bit signals, and the fourth channel extracts the 4th, 8th, 12th, and 16th bit signals. At this time, the 16-bit high-speed signal in series in the time domain is converted into 4 4-bit low-speed signals in parallel in the time domain.

[0037] (5) Use photoelectric detectors to detect each microwave photon signal (the operating frequency of this detector can be lower than 40 GHz but must be higher than 10 GHz), and use a high-speed microwave source to achieve 4-channel 10 GHz microwave signal output.

[0038] The present invention provides an embodiment of a microwave photon signal frequency conversion method based on an optical delay line array, comprising:

[0039] First, the microwave signal is converted into an optical signal, that is, the electrical signal generated by microwave detection is used to control the laser light source or optical modulator to generate an optical signal, or the microwave signal is directly used to control the laser light source or optical modulator to generate an optical signal;

[0040] Secondly, the frequency conversion processing of microwave photon signals is completed in the manner of time domain series high-speed signal → time domain parallel high-speed signal → time domain staggered high-speed signal → time domain sampling low-speed signal, and the time domain serial-to-parallel conversion is completed using a tunable optical delay line array and a uniformly controlled sampling waveform;

[0041] Finally, the optical signal is converted into a microwave signal, that is, the electrical signal generated by photoelectric detection is used to control the microwave source or microwave modulator to generate a microwave signal, or the optical signal is used directly to control the photogenerated microwave source to generate a microwave signal.

[0042] The present invention provides an embodiment of a microwave photon signal frequency conversion method based on an optical delay line array, wherein a high-speed microwave signal is loaded onto an optical carrier to generate a microwave photon signal, an optical beam splitter is used to separate the microwave photon signal into multiple paths, and different time delays are applied to the signals through a tunable delay line array, and a unified low-frequency sampling waveform is used to perform sampling processing on different timing positions of the signals of each path, and finally a high-speed signal is frequency-converted into multiple low-speed signals.

[0043] In some embodiments, the frequency conversion method can convert a high-speed microwave photon signal with a repetition frequency of R into N low-speed microwave photon signals with a repetition frequency of R / N through a cascade optical beam splitter, and the high-speed signal is grouped into N bits, and the first data of each group is output in sequence as the first low-speed signal, and the second data of each group is output in sequence as the second low-speed signal, and similarly, each N-th data of each group is output in sequence as the N-th low-speed signal.

[0044] The specific implementation method is: introduce an optical delay of (N-1) / R for the Nth signal through a tunable optical delay line array, and sample each signal using a sampling waveform with clock synchronization, a repetition frequency of R / N, and a time window of 1 / R.

[0045] In some specific embodiments, the above process is implemented in ways including but not limited to a chip integrated optical circuit, a free space optical circuit or an all-fiber optical circuit.

[0046] In some specific embodiments, all-optical signal parameters are adjusted according to actual needs, and the optical degrees of freedom of the signal include but are not limited to intensity, polarization, phase, time window position, and mode field.

[0047] In some specific embodiments, the operating frequency, sampling waveform, clock synchronization means and specific device parameters are not limited, and the application requirements and the objects of action are not limited.

[0048] In some embodiments, the conversion of microwave signals and optical signals realizes the conversion of effective signals from microwave carrier to light wave carrier, or from light wave carrier to microwave carrier; the former can generate electrical signals through microwave detection to control a laser light source to generate an optical signal, or generate electrical signals through microwave detection to control an optical carrier through an optical modulator to generate an optical signal, or directly use microwave signals to control a laser light source to generate an optical signal, or directly use microwave signals to control an optical modulator to generate an optical signal; the latter can generate electrical signals through photoelectric detection to control a microwave source to generate a microwave signal, or generate electrical signals through photoelectric detection to control a microwave modulator to generate a microwave signal, and directly use optical signals to control a photogenerated microwave source to generate a microwave signal.

[0049] In some embodiments, the specific technical scheme for converting microwave signals into optical signals is not limited, and the specific parameters and structural features of the laser light source, microwave source, microwave modulator, and optical modulator are not limited.

[0050] The present invention provides an embodiment of a microwave photon signal frequency conversion method based on an optical delay line array, which specifically includes:

[0051] S101, electro-optical signal conversion, loading the microwave signal onto an optical carrier through microwave detection and optical modulation to generate a high-speed microwave photon signal;

[0052] S102, time domain serial-to-parallel conversion, separating the high-speed microwave photon signal into multiple optical paths through a cascade optical beam splitter, using a tunable optical delay line array to achieve different optical delays, using a uniformly controlled sampling waveform to sample different timing positions of each signal, and obtaining different low-speed microwave photon signals of each path;

[0053] S103, photoelectric signal conversion, converting multiple low-speed microwave photon signals into microwave signals through photoelectric detectors, microwave sources or other devices, and realizing frequency conversion processing of microwave signals using the microwave photon system as a black box.

[0054] In some embodiments, a high-speed microwave photon signal with a repetition frequency of R is converted into N low-speed microwave photon signals with a repetition frequency of R / N through a cascade optical beam splitter, and the high-speed signal is grouped into N bits, and the first data of each group is sequentially output as the first low-speed signal, and the second data of each group is sequentially output as the second low-speed signal. Similarly, each N-th data in each group is sequentially output as the N-th low-speed signal, where N is a natural number.

[0055] In some embodiments, an optical delay of (N-1) / R is introduced into the Nth signal through a tunable optical delay line array, and each signal is sampled using a sampling waveform with clock synchronization, a repetition frequency of R / N, and a time window of 1 / R.

[0056] The present invention provides a system embodiment for realizing the above-mentioned microwave photon signal frequency conversion method based on optical delay line array, comprising a system consisting of a microwave detector, a light source, a microwave source, an optical switch, a photodetector, a cascade optical beam splitter, a tunable optical delay line array, and a microwave photon subsystem, and also comprising an electro-optical signal conversion module, a time domain serial-to-parallel conversion module, and an optoelectronic signal conversion module, wherein:

[0057] An electro-optical signal conversion module is used to generate high-speed microwave photon signals by loading microwave signals onto optical carriers through microwave detection and optical modulation;

[0058] The time-domain serial-to-parallel conversion module is used to separate the high-speed microwave photon signal into multiple optical paths through a cascade optical beam splitter, realize different optical delays using a tunable optical delay line array, and sample different timing positions of each signal using a uniformly controlled sampling waveform to obtain different low-speed microwave photon signals of each path;

[0059] The photoelectric signal conversion module is used to convert multiple low-speed microwave photon signals into microwave signals through photoelectric detectors, microwave sources or other devices, and realize frequency conversion processing of microwave signals using the microwave photon system as a black box.

[0060] The present invention also provides an embodiment of a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above method is implemented.

[0061] The present invention also provides an embodiment of a computer program, which implements the above method when executed by a processor.

[0062] Compared with the prior art, the present invention has the following advantages:

[0063] First, the present invention proposes a design concept of "optical domain replacing electrical domain". Through the complete process of microwave → optical wave → processing → optical wave → microwave, it effectively breaks through the "electronic bottleneck" faced by traditional electronic devices and electronic systems when processing high-speed microwave signals, and realizes the performance improvement of microwave photonic technology in high-speed microwave signal processing.

[0064] Secondly, the present invention proposes a "space for time" design idea, which effectively utilizes the technical advantages of chip integrated optical circuits in building ultra-large-scale optoelectronic information systems, and realizes the time domain dislocation and separate sampling of high-speed microwave photon signals through optical delay lines, providing a new technical solution for high-speed microwave signal frequency conversion processing;

[0065] In addition, the present invention can enrich microwave signal processing functions and enhance microwave signal processing capabilities by adding optical signal processing system functions and reconstructing the chip integrated optical path layout, and is expected to provide an important reference for modular, precise, standardized, and diversified microwave photonic systems.

[0066] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0067] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0068] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0069] The present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0070] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0071] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0072] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0073] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0074] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules 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 disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0075] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0076] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0077] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. 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

1. A microwave photon signal frequency conversion method based on an optical delay line array, characterized in that Convert microwave signals into optical signals, control laser light sources or optical modulators to generate optical signals through electrical signals generated by microwave detection, or directly use microwave signals to control laser light sources or optical modulators to generate optical signals; perform frequency conversion processing of microwave photon signals in sequence on time-domain series high-speed signals, time-domain parallel high-speed signals, time-domain staggered high-speed signals, and time-domain sampling low-speed signals, and use tunable optical delay line arrays and uniformly controlled sampling waveforms to complete time-domain serial-to-parallel conversion; convert optical signals into microwave signals, control microwave sources or microwave modulators to generate microwave signals through electrical signals generated by photoelectric detection, or directly use optical signals to control photogenerated microwave sources to generate microwave signals. The method converts a high-speed microwave photon signal with a repetition frequency of R into N low-speed microwave photon signals with a repetition frequency of R / N through a cascade optical beam splitter, groups the high-speed signal into N bits, and sequentially outputs the first data of each group as the first low-speed signal, and sequentially outputs the second data of each group as the second low-speed signal, and similarly outputs each N-th data of each group as the N-th low-speed signal, wherein N is a natural number; introduces an optical delay of (N-1) / R into the N-th signal through a tunable optical delay line array, and samples each signal using a sampling waveform with clock synchronization, a repetition frequency of R / N, and a transmission time window of 1 / R.

2. The microwave photon signal frequency conversion method based on optical delay line array according to claim 1, characterized in that: The method specifically comprises: S101, electro-optical signal conversion, loading the microwave signal onto an optical carrier through microwave detection and optical modulation to generate a high-speed microwave photon signal; S102, time domain serial-to-parallel conversion, separating the high-speed microwave photon signal into multiple optical paths through a cascade optical beam splitter, using a tunable optical delay line array to achieve different optical delays, using a uniformly controlled sampling waveform to sample different timing positions of each signal, and obtaining different low-speed microwave photon signals of each path; S103, photoelectric signal conversion, converting multiple low-speed microwave photon signals into microwave signals through photoelectric detectors, microwave sources or other devices, and realizing frequency conversion processing of microwave signals using the microwave photon system as a black box.

3. The microwave photon signal frequency conversion method based on optical delay line array according to claim 1 or 2, characterized in that: The microwave signal and optical signal conversion realizes the conversion of effective signals from microwave carrier to optical wave carrier, or from optical wave carrier to microwave carrier.

4. The microwave photon signal frequency conversion method based on optical delay line array according to claim 3, characterized in that: The microwave signal and optical signal conversion realizes the conversion of effective signals from microwave carrier to optical wave carrier, and generates electrical signals through microwave detection to control laser light source to generate optical signals, or generates electrical signals through microwave detection to control optical carrier through optical modulator to generate optical signals, or directly uses microwave signals to control laser light source to generate optical signals, or directly uses microwave signals to control optical modulator to generate optical signals.

5. The microwave photon signal frequency conversion method based on optical delay line array according to claim 3, characterized in that: The microwave signal and optical signal conversion realizes the conversion of effective signal from light wave carrier to microwave carrier, generates electrical signal through photoelectric detection to control microwave source to generate microwave signal, or generates electrical signal through photoelectric detection to control microwave modulator to generate microwave signal, and directly uses optical signal to control photogenerated microwave source to generate microwave signal.

6. The microwave photon signal frequency conversion method based on optical delay line array according to claim 1, characterized in that: The implementation of the method includes but is not limited to a chip integrated optical path, a free space optical path or an all-optical optical path; the all-optical signal parameters are adjusted according to actual needs, and the optical degrees of freedom of the signal carried include but are not limited to intensity, polarization, phase, time window position, and mode field.

7. A system for implementing the microwave photon signal frequency conversion method based on an optical delay line array as claimed in any one of claims 1 to 6, characterized in that The system includes a microwave detector, a light source, a microwave source, an optical switch, a photoelectric detector, a cascade optical beam splitter, a tunable optical delay line array, and a microwave photon subsystem, and also includes an electro-optical signal conversion module, a time domain serial-to-parallel conversion module, and an optoelectronic signal conversion module, wherein: An electro-optical signal conversion module is used to generate high-speed microwave photon signals by loading microwave signals onto optical carriers through microwave detection and optical modulation; The time-domain serial-to-parallel conversion module is used to separate the high-speed microwave photon signal into multiple optical paths through a cascade optical beam splitter, realize different optical delays using a tunable optical delay line array, and sample different timing positions of each signal using a uniformly controlled sampling waveform to obtain different low-speed microwave photon signals of each path; The photoelectric signal conversion module is used to convert multiple low-speed microwave photon signals into microwave signals through photoelectric detectors, microwave sources or other devices, and realize frequency conversion processing of microwave signals using the microwave photon system as a black box.

8. A computer-readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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