Energy and information collaborative optimization system and optimization method

Abstract

The invention provides an energy-information collaborative optimization system and optimization method.The optimization system comprises a reverse communication module, a collaborative control unit, a pump laser and an optical phase conjugation module which are connected in sequence, and the reverse communication module is connected with a receiving end of an optical fiber energy-information co-transmission system; the optical phase conjugation module is used for acquiring output electric power of a receiving end photocell and a communication performance index for representing communication quality, and is arranged at a midpoint position of an optical fiber link; the cooperative control unit is used for reading the output electric power of the photocell and the communication performance index acquired by the reverse communication module and dynamically adjusting the output of the pump laser based on the output electric power of the photocell and the communication performance index, so that the phase conjugation efficiency of the optical phase conjugation module is changed; therefore, the value of the comprehensive performance function is maximized. According to the energy-information collaborative optimization system and optimization method, collaborative optimization of communication quality and energy transmission efficiency can be realized.

Description

Technical Field

[0001] This invention relates to the field of optical fiber energy and communication co-transmission, and in particular to an energy and communication co-optimization system and optimization method. Background Technology

[0002] Fiber optic energy and communication co-transmission technology transmits optical energy and communication signals simultaneously through a single optical fiber, providing an integrated "energy transmission" and "communication" solution for scenarios where direct power is not possible, such as remote sensors, IoT nodes, and micro base stations. In a fiber optic energy and communication co-transmission system, high-power "energy light," such as 1550nm band laser, serves as the carrier for energy transmission, while "signal light," carrying information, is responsible for data transmission. Both are transmitted within the same optical fiber using technologies such as wavelength division multiplexing.

[0003] However, the introduction of high-power light amplifies nonlinear optical effects in optical fibers, such as stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS). These nonlinear effects not only lead to communication signal distortion and increased bit error rate, but more importantly, the scattering process they induce directly converts forward-transmitting energy light into backward-transmitting or stray light of different wavelengths, resulting in significant loss of transmitted optical power. This means that a large amount of the "effective optical energy" used to power remote equipment is lost before reaching the photovoltaic cell, severely limiting the system's energy transmission distance and power supply capacity.

[0004] To suppress nonlinear effects, optical phase conjugation (OPC) technology, as a classic "optical domain" compensation scheme, has been studied and applied in traditional long-distance optical fiber communication systems. Its basic principle is to place an OPC module at the midpoint of the optical fiber link, causing the dispersion and nonlinear effects in the latter half of the transmission link to cancel each other out with those in the former half, thereby improving the transmission quality of the communication signal. However, in a composite system of energy and communication transmission, energy transmission efficiency is a core performance indicator that is equally important as communication quality. If this OPC device, derived from a pure communication system, is directly applied to an optical fiber energy and communication transmission system with communication performance as the optimization objective, it will be difficult to meet the new requirements of energy and communication synergistic optimization in such systems. Summary of the Invention

[0005] In view of this, the present invention provides an energy-information collaborative optimization system and optimization method to solve the problem that OPC devices in traditional optical fiber communication systems cannot achieve energy-information collaborative optimization.

[0006] This invention provides an energy-information co-transmission optimization system, comprising: a reverse communication module, a co-control unit, a pump laser, and an optical phase conjugation module connected sequentially. The reverse communication module is connected to the receiving end of an optical fiber energy-information co-transmission system and is used to acquire the output power of the receiving end's photovoltaic cell and communication performance indicators characterizing communication quality. The optical phase conjugation module is positioned at the midpoint of the optical fiber link and is used to perform phase conjugation transformation on the optical field. The co-control unit reads the output power of the photovoltaic cell and the communication performance indicators acquired by the reverse communication module and dynamically adjusts the output of the pump laser based on these indicators, thereby changing the phase conjugation efficiency of the optical phase conjugation module to maximize the comprehensive performance function value. The formula is as follows:

[0007] ;

[0008] In the formula, Q represents the communication performance index. This indicates the output power of the photovoltaic cell. and Q and respectively The weighting coefficients.

[0009] Preferably, the collaborative control unit includes a reading unit for reading the output power of the photodiode and the communication performance indicators obtained by the reverse communication module, and an adjustment unit for dynamically adjusting the output of the pump laser based on the output power of the photodiode and the communication performance indicators, wherein the adjustment unit includes:

[0010] First acquisition unit: used to acquire the direction of the last fine-tuning of the output of the pump laser and the comprehensive performance function value before fine-tuning;

[0011] Calculation unit: used to calculate the current comprehensive performance function value using the currently acquired output power and communication performance indicators of the photovoltaic cells;

[0012] Comparison and fine-tuning unit: used to compare the current comprehensive performance function value with the comprehensive performance function value before fine-tuning. If the current comprehensive performance function value is greater than the comprehensive performance function value before fine-tuning, the output of the pump laser is fine-tuned along the previous fine-tuning direction. Otherwise, the output of the pump laser is fine-tuned in the opposite direction.

[0013] Further preferably, the optical phase conjugation module is implemented based on a periodically polarized lithium niobate waveguide or based on the fiber four-wave mixing effect.

[0014] Further preferably, the energy-information collaborative optimization system also includes a temperature control system for closed-loop regulation of the temperature of the optical phase conjugate module.

[0015] Further optimization, and The value range is 0.3-0.7.

[0016] Further preferred, the communication performance indicator is the Q factor.

[0017] Further preferably, all functional modules in the energy-information collaborative optimization system are encapsulated within a standardized mechanical structure.

[0018] This invention also provides an energy-information collaborative optimization method, which employs the above-mentioned energy-information collaborative optimization system and includes the following steps:

[0019] Obtain the output power of the photovoltaic cell at the receiving end and the communication performance indicators used to characterize the communication quality;

[0020] The output of the pump laser is dynamically adjusted based on the output power of the photovoltaic cell and the communication performance indicators, thereby changing the phase conjugation efficiency of the optical phase conjugation module to maximize the comprehensive performance function value. The comprehensive performance function... The formula is as follows:

[0021] ;

[0022] In the formula, Q represents the communication performance index. This indicates the output power of the photovoltaic cell. and Q and respectively The weighting coefficients.

[0023] Preferably, the method for dynamically adjusting the output of the pump laser based on the output power and communication performance indicators of the photovoltaic cell is as follows:

[0024] Obtain the direction of the last fine-tuning of the pump laser output and the comprehensive performance function value before fine-tuning;

[0025] Calculate the current comprehensive performance function value using the currently acquired photovoltaic cell output power and communication performance indicators;

[0026] The current comprehensive performance function value is compared with the comprehensive performance function value before fine-tuning. If the current comprehensive performance function value is greater than the comprehensive performance function value before fine-tuning, the output of the pump laser is fine-tuned in the direction of the previous fine-tuning. Otherwise, the output of the pump laser is fine-tuned in the opposite direction.

[0027] Further preferably, the phase conjugation efficiency of the optical phase conjugation module is adjustable within the range of 40%-70%.

[0028] The energy-information collaborative optimization system and method provided by this invention constructs an integrated intelligent optical processing node that combines "perception-decision-execution" and is placed at the midpoint of the fiber optic link. It can not only suppress nonlinear effects through optical phase conjugation (OPC) technology and significantly improve the communication quality of the system, but also achieve synergistic optimization of system communication quality and energy transmission efficiency at the hardware level by introducing a closed-loop control mechanism (trading a significant improvement in energy transmission efficiency at the cost of a small improvement in communication performance). This breaks through the limitations of traditional optical phase conjugation devices as isolated signal processing units.

[0029] The energy-communication collaborative optimization system and method provided by this invention can achieve collaborative optimization of communication quality and energy transmission efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the energy-information collaborative optimization system provided by the present invention in an optical fiber energy-information co-transmission system. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments.

[0032] The design and performance evaluation system of traditional OPC devices and their optimization methods are entirely based on communication performance indicators (such as Q factor and bit error rate BER). They are "performance recovery" devices and lack consideration for the dimension of "energy efficiency". As a result, their optimization direction cannot meet the energy-communication synergistic optimization goal of composite systems.

[0033] To solve the above problems, such as Figure 1As shown, this invention provides an energy-information co-optimization system, comprising: a reverse communication module, a co-control unit, a pump laser, and an optical phase conjugation (OPC) module connected in sequence. The reverse communication module is connected to the receiving end of the fiber optic energy-information co-transmission system and is used to acquire the output power of the receiving end's photovoltaic cell and communication performance indicators (such as the Q factor) used to characterize communication quality. The optical phase conjugation module is positioned at the midpoint of the fiber optic link and is used to perform phase conjugation transformation on the optical field, causing the dispersion and nonlinear effects in the latter half of the transmission link to cancel each other out with those in the former half, thereby suppressing stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) nonlinear effects to improve communication quality. The co-control unit is used to read the output power and communication performance indicators of the photovoltaic cell acquired by the reverse communication module and dynamically adjust the output of the pump laser based on these indicators, thereby changing the phase conjugation efficiency of the optical phase conjugation module (preferably, the phase conjugation efficiency of the optical phase conjugation module is adjustable within the range of 40%-70%) to maximize the comprehensive performance function value. The comprehensive performance function... The formula is as follows:

[0034] ;

[0035] In the formula, Q represents the communication performance index. This indicates the output power of the photovoltaic cell. and These are the configurable weighting coefficients, Q and... The value of varies with the phase conjugation efficiency of the optical phase conjugation module, preferably . and It can be configured in the range of 0.3-0.7 depending on the application scenario.

[0036] Figure 1 A fiber optic energy-information co-transmission system incorporating the aforementioned energy-information co-optimization system is provided. This system further includes a transmitter and a receiver. The transmitter generates energy light and signal light respectively using an energy laser and a signal laser, which are then combined using a wavelength division multiplexer. The beams are then transmitted through a single-mode fiber, and at the midpoint of the fiber link, the energy-information co-optimization system provided in this application performs signal compensation and energy optimization before continuing transmission. Finally, the energy light and signal light are separated by the wavelength division multiplexer at the receiver. The output power of the photovoltaic cells and the communication performance indicators used to characterize communication quality, calculated by the receiver, are then transmitted back to the energy-information co-optimization system via a reverse channel. The energy-information co-optimization system performs energy-information co-optimization based on the feedback information.

[0037] As an improvement to the technical solution, the collaborative control unit includes a reading unit for reading the output power of the photocell and the communication performance indicators obtained by the reverse communication module, and an adjustment unit for dynamically adjusting the output of the pump laser based on the output power of the photocell and the communication performance indicators, wherein the adjustment unit includes:

[0038] First acquisition unit: used to acquire the direction of the last fine-tuning of the output of the pump laser and the comprehensive performance function value before fine-tuning;

[0039] Calculation unit: used to calculate the current comprehensive performance function value using the currently acquired output power and communication performance indicators of the photovoltaic cells;

[0040] Comparison and fine-tuning unit: used to compare the current comprehensive performance function value with the comprehensive performance function value before fine-tuning. If the current comprehensive performance function value is greater than the comprehensive performance function value before fine-tuning, the output of the pump laser is fine-tuned along the previous fine-tuning direction. Otherwise, the output of the pump laser is fine-tuned in the opposite direction.

[0041] As an improvement to the technical solution, the optical phase conjugation module is implemented based on either a periodically polarized lithium niobate (PPLN) waveguide or a fiber four-wave mixing effect. The former utilizes quasi-phase matching technology to achieve a phase conjugation efficiency of over 60% in the operating band, while the latter obtains a wider operating bandwidth through highly nonlinear fiber parameters. Both solutions ensure that the device can synchronously process the energy light and signal light in the wavelength division multiplexing system without the need for additional wavelength division multiplexing devices, maintaining the simplicity and reliability of the system.

[0042] As an improvement to the technical solution, the energy-information collaborative optimization system also includes a temperature control system, which uses a thermoelectric cooler (TEC) and a thermistor to perform closed-loop regulation of the optical phase conjugate module, so that the temperature control accuracy reaches ±0.1℃, ensuring the working stability of the optical phase conjugate module.

[0043] As an improvement to the technical solution, the energy-information co-transmission optimization system employs a highly integrated design concept, encapsulating all functional modules within a standardized mechanical structure and seamlessly connecting them to the system via a low-return-loss fiber optic interface. This design ensures both the engineering practicality of the device and provides the necessary flexibility for parameter optimization in different application scenarios, offering a reliable hardware foundation for the practical application of fiber optic energy-information co-transmission technology. Specifically, each functional module is integrated into a 100mm×80mm×20mm aluminum alloy shielded box. The OPC chip is bonded to the TEC temperature control platform using high thermal conductivity epoxy resin, forming a closed-loop temperature control system with a ±0.05℃ precision thermistor, maintaining a stable operating temperature of 25.0±0.1℃. A six-dimensional precision adjustment frame is used to achieve active alignment between the single-mode fiber (FC / APC interface) and the waveguide chip, optimizing single-end coupling loss to <1.0dB. The entire unit operates on +5V power, with a maximum power consumption of no more than 4.5W. All optical interfaces exhibit return loss better than -60dB. The reverse communication module integrates an optical monitoring channel (OSC) receiver unit, which is responsible for parsing SNMP protocol data packets from the receiver, extracting photovoltaic cell output power parameters and communication performance parameters, and transmitting them to the control unit via an SPI interface. The collaborative control unit is implemented using an ARM Cortex-M4 architecture microcontroller. It periodically reads photovoltaic cell output power data and communication performance data from the reverse communication module and performs calculations based on a preset multi-objective function. The collaborative control unit precisely adjusts the pump laser drive current through a 16-bit DAC output, achieving continuously adjustable phase conjugation efficiency within the range of 40%-70%.

[0044] This invention also provides an energy-information collaborative optimization method, which employs the above-mentioned energy-information collaborative optimization system and includes the following steps:

[0045] Obtain the output power of the photovoltaic cell at the receiving end and the communication performance indicators used to characterize the communication quality;

[0046] The output of the pump laser is dynamically adjusted based on the output power of the photovoltaic cell and the communication performance indicators, thereby changing the phase conjugation efficiency of the optical phase conjugation module to maximize the comprehensive performance function value. The comprehensive performance function... The formula is as follows:

[0047] ;

[0048] In the formula, Q represents the communication performance index. This indicates the output power of the photovoltaic cell. and Q and respectively The weighting coefficients.

[0049] As an improvement to the technical solution, the method for dynamically adjusting the output of the pump laser based on the output power and communication performance indicators of the photovoltaic cell is as follows:

[0050] Obtain the direction of the last fine-tuning of the pump laser output and the comprehensive performance function value before fine-tuning;

[0051] Calculate the current comprehensive performance function value using the currently acquired photovoltaic cell output power and communication performance indicators;

[0052] The current comprehensive performance function value is compared with the comprehensive performance function value before fine-tuning. If the current comprehensive performance function value is greater than the comprehensive performance function value before fine-tuning, the output of the pump laser is fine-tuned in the direction of the previous fine-tuning. Otherwise, the output of the pump laser is fine-tuned in the opposite direction.

[0053] As an improvement to the technical solution, the phase conjugation efficiency of the optical phase conjugation module is adjustable in the range of 40%-70%.

[0054] The energy-communication synergistic optimization system and method provided by this invention can not only suppress nonlinear effects and significantly improve the communication quality of the system through optical phase conjugation (OPC) technology, but also achieve synergistic optimization of system communication quality and energy transmission efficiency at the hardware level by introducing a closed-loop control mechanism (exchanging a small cost of communication performance for a significant improvement in energy transmission efficiency), breaking through the limitations of traditional optical phase conjugation devices as isolated signal processing units.

[0055] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can 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. The solutions in the embodiments of this application can be implemented in various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0056] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can 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, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0057] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0058] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0059] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0060] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An energy-information collaborative optimization system, characterized in that, include: The system comprises a reverse communication module, a cooperative control unit, a pump laser, and an optical phase conjugation module connected in sequence. The reverse communication module is connected to the receiver of the fiber optic energy-communication co-transmission system and is used to acquire the output power of the receiving photovoltaic cell and communication performance indicators characterizing communication quality. The optical phase conjugation module is positioned at the midpoint of the fiber optic link and is used to perform phase conjugation transformation on the optical field. The cooperative control unit reads the output power of the photovoltaic cell and the communication performance indicators acquired by the reverse communication module and dynamically adjusts the output of the pump laser based on these indicators, thereby changing the phase conjugation efficiency of the optical phase conjugation module to maximize the overall performance function value. The formula is as follows: ； In the formula, Q represents the communication performance index. This indicates the output power of the photovoltaic cell. and Q and The weighting coefficients.

2. The energy-information collaborative optimization system according to claim 1, characterized in that, The collaborative control unit includes a reading unit for reading the output power of the photocell and the communication performance indicators obtained by the reverse communication module, and an adjustment unit for dynamically adjusting the output of the pump laser based on the output power of the photocell and the communication performance indicators, wherein the adjustment unit includes: First acquisition unit: used to acquire the direction of the last fine-tuning of the output of the pump laser and the comprehensive performance function value before fine-tuning; Calculation unit: used to calculate the current comprehensive performance function value using the currently acquired output power and communication performance indicators of the photovoltaic cells; Comparison and fine-tuning unit: used to compare the current comprehensive performance function value with the comprehensive performance function value before fine-tuning. If the current comprehensive performance function value is greater than the comprehensive performance function value before fine-tuning, the output of the pump laser is fine-tuned along the previous fine-tuning direction. Otherwise, the output of the pump laser is fine-tuned in the opposite direction.

3. The energy-information collaborative optimization system according to claim 1, characterized in that, The optical phase conjugation module is implemented based on periodically polarized lithium niobate waveguides or based on fiber four-wave mixing effects.

4. The energy-information collaborative optimization system according to claim 1, characterized in that, The energy and information collaborative optimization system also includes a temperature control system for closed-loop regulation of the temperature of the optical phase conjugate module.

5. The energy-information collaborative optimization system according to claim 1, characterized in that, and The value range is 0.3-0.

7.

6. The energy-information collaborative optimization system according to claim 1, characterized in that, The communication performance metric is the Q factor.

7. The energy-information collaborative optimization system according to claim 1, characterized in that, All functional modules in the energy and information collaborative optimization system are encapsulated within a standardized mechanical structure.

8. A collaborative optimization method for energy and information, characterized in that, The energy-information collaborative optimization system according to any one of claims 1 to 7 includes the following steps: Obtain the output power of the photovoltaic cell at the receiving end and the communication performance indicators used to characterize the communication quality; The output of the pump laser is dynamically adjusted based on the output power of the photovoltaic cell and the communication performance indicators, thereby changing the phase conjugation efficiency of the optical phase conjugation module to maximize the comprehensive performance function value. The comprehensive performance function... The formula is as follows: ； In the formula, Q represents the communication performance index. This indicates the output power of the photovoltaic cell. and Q and The weighting coefficients.

9. The energy-information collaborative optimization method according to claim 8, characterized in that, The method for dynamically adjusting the output of the pump laser based on the output power and communication performance indicators of the photovoltaic cell is as follows: Obtain the direction of the last fine-tuning of the pump laser output and the comprehensive performance function value before fine-tuning; Calculate the current comprehensive performance function value using the currently acquired photovoltaic cell output power and communication performance indicators; The current comprehensive performance function value is compared with the comprehensive performance function value before fine-tuning. If the current comprehensive performance function value is greater than the comprehensive performance function value before fine-tuning, the output of the pump laser is fine-tuned along the previous fine-tuning direction. Otherwise, the output of the pump laser is fine-tuned in the opposite direction.

10. The energy-information collaborative optimization method according to claim 8, characterized in that, The phase conjugation efficiency of the optical phase conjugation module is adjustable within the range of 40%-70%.

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