Energy and signal transmission system and method

Abstract

The invention discloses an energy and signal transmission system and method, and relates to the field of optical fiber transmission, the energy and signal transmission system comprises an energy light generation unit and a signal transmission module, the energy transmission module is used for generating energy light with a set wavelength, and the signal transmission module is used for generating signal light with a preset wavelength and preprocessing the generated signal light; the first wavelength division multiplexer is used for coupling the energy light and the preprocessed signal light; the hollow-core optical fiber is used for transmitting the energy light and the signal light coupled by the first wavelength division multiplexer; the second wavelength division multiplexer is used for separating the energy light and the signal light transmitted by the hollow-core optical fiber; the energy conversion module is used for performing power detection on the energy light separated by the second wavelength division multiplexer and then converting the light energy of the energy light into an electric signal, and the signal conversion module is used for converting the signal light separated by the second wavelength division multiplexer into an electric signal and adjusting the intensity of the electric signal; and detecting the quality of the electric signal.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber transmission, and particularly relates to an energy and signal transmission system and method. Background Art

[0002] Traditionally, cables are used for power transmission. However, due to their heavy weight, large losses, high cost, poor flexibility, and severe electromagnetic interference, optical fibers are now usually used to replace cables as the carrier for power supply of small communication stations. For optical fibers, a large core is usually required to ensure a high power damage threshold. However, a large core diameter may generate multiple transmission modes with a certain dispersion range.

[0003] In recent years, with the rapid development of anti-resonant hollow-core fiber technology, it has attracted extensive attention from the optical fiber communication industry and academia due to its advantages of low delay, low non-linearity, and low loss, and a large number of studies have been carried out. The invention of hollow-core fiber was initially to enable optical fibers to get rid of the intrinsic limitations of solid materials, provide a quasi-vacuum transmission environment for light waves, and achieve low-delay and large-capacity optical communication. At 1550 nm, air is 3-4 orders of magnitude lower than quartz in terms of non-linearity and dispersion. In addition, the refractive index of air is lower than that of quartz, which means that low-delay signal fidelity transmission can be achieved by guiding light with air. Traditional optical fibers are limited by the laser damage threshold and non-linear effects of glass materials and are difficult to meet their high-power transmission requirements. In anti-resonant hollow-core fibers, broadband low-loss single-mode propagation of light in the hollow core can be achieved by adjusting the fine cladding structure. Different from solid-core fibers, in anti-resonant hollow-core fibers, since light mainly propagates in the air core, the coverage rate of the optical mode field and the fiber material can be reduced to 5% or even lower, which greatly improves the laser damage threshold, anti-photon darkening, and anti-irradiation performance of the fiber. At the same time, the fiber material loss, optical non-linearity, and dispersion are reduced, and it is especially suitable for low-loss transmission of high-power lasers including extreme wavelengths such as ultraviolet and mid-infrared, as well as high-peak-power ultrashort pulse lasers.

[0004] However, the existing hollow-core fibers have poor efficiency in simultaneously transmitting energy light or signal light. Therefore, there is an urgent need for a system that can improve the transmission efficiency of simultaneously transmitting energy light and signal light. Summary of the Invention

[0005] The embodiments of the present application provide an energy and signal transmission system and method, which can solve the technical problem of low transmission efficiency of simultaneously transmitting energy light and signal light in hollow-core fibers.

[0006] In a first aspect, an embodiment of the present application provides an energy and signal transmission system, including: an energy light generation unit and a signal transmission module. The energy transmission module is configured to generate energy light with a set wavelength, and the signal transmission module is configured to generate signal light with a preset wavelength and perform preprocessing on the generated signal light; a first wavelength division multiplexer for coupling the energy light and the preprocessed signal light; a hollow core fiber for transmitting the energy light and the signal light coupled by the first wavelength division multiplexer; a second wavelength division multiplexer for separating the energy light and the signal light transmitted by the hollow core fiber; and an energy conversion module and a signal conversion module. The energy conversion module is configured to detect the power of the energy light separated by the second wavelength division multiplexer, and then convert the light energy of the energy light into an electrical signal. The signal conversion module is configured to convert the signal light separated by the second wavelength division multiplexer into an electrical signal, adjust the intensity of the electrical signal, and perform quality detection on the electrical signal.

[0007] In combination with the first aspect, in an embodiment, the signal transmission module further includes a signal light source, a polarization controller, a lithium phosphate modulator, an isolator, and an erbium-doped fiber amplifier connected in series in sequence. Among them, the signal light source is configured to emit signal light, the polarization controller is configured to control the polarization state of the signal light, the lithium phosphate modulator is configured to modulate the signal light, the isolator is configured to prevent signal light reflection and back transmission, and the erbium-doped fiber amplifier is configured to amplify the signal light.

[0008] In combination with the first aspect, in an embodiment, a signal generator is connected in parallel with the lithium phosphate modulator, and the signal generator is configured to drive the lithium phosphate modulator.

[0009] In combination with the first aspect, in an embodiment, the energy conversion module includes an optical power meter and a photovoltaic converter connected in series in sequence. Among them, the optical power meter is configured to detect the power of the energy light, and the photovoltaic converter is configured to convert the light energy of the energy light into electrical energy.

[0010] In combination with the first aspect, in an embodiment, the signal conversion module includes a photodetector, an electrical attenuator, and a signal analyzer connected in series in sequence. The photodetector is configured to convert the light energy of the signal light into electrical energy, the electrical attenuator is configured to adjust the intensity of the converted electrical signal, and the signal analyzer is configured to perform quality detection on the electrical signal.

[0011] In combination with the first aspect, in an embodiment, the set wavelength is 800 nm to 1100 nm.

[0012] In combination with the first aspect, in an embodiment, the preset wavelength is 1500 nm to 1600 nm.

[0013] In combination with the first aspect, in an embodiment, the hollow core fiber is a hollow core fiber with a mode field diameter of 26 μm.

[0014] In a second aspect, an embodiment of the present application provides an energy and signal transmission method for performing photoelectric conversion on energy light and signal light based on the energy and signal transmission system described in any of the above embodiments of the claims, including: generating energy light with a set wavelength and signal light with a preset wavelength, and preprocessing the generated signal light; coupling the energy light and the preprocessed signal light, and transmitting them through a hollow fiber; separating the energy light and the signal light transmitted through the hollow fiber, detecting the power of the energy light, then converting the light energy of the energy light into an electrical signal, and converting the signal light into an electrical signal, adjusting the intensity of the electrical signal, and detecting the quality of the electrical signal.

[0015] In combination with the second aspect, in an embodiment, the preprocessing of the signal light includes: controlling the polarization state, modulation, isolation, and amplification.

[0016] The beneficial effects brought by the technical solutions provided by the embodiments of the present application include:

[0017] In the embodiments of the present application, by inputting energy light with a set wavelength and signal light with a preset wavelength into a first wavelength division multiplexer, the hollow fiber can simultaneously transmit multiple energy lights and signal lights with different wavelengths, improving the transmission capacity of the hollow fiber. At the same time, the energy light and the signal light can be efficiently transmitted in the same hollow fiber without interfering with each other, further improving the transmission efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the energy and signal transmission system provided by the embodiment of the present application.

[0020] Figure 2 It is a cross-sectional structure diagram of the hollow fiber provided by the embodiment of the present application.

[0021] Figure 3 It is a characteristic detection diagram of the hollow fiber provided by the embodiment of the present application.

[0022] Figure 4 It is a flowchart of the energy and signal transmission method provided by the embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0024] The embodiments of this application provide an energy and signal transmission system and method, which can solve the technical problem of low transmission efficiency of simultaneously transmitting energy light and signal light in a hollow fiber.

[0025] Figure 1 It is a schematic structural diagram of the energy and signal transmission system provided by the embodiments of this application. Refer to Figure 1 The embodiments of this application provide an energy and signal transmission system, including: an energy light generation unit and a signal transmission module. The energy transmission module is used to generate energy light of a set wavelength. The signal transmission module is used to generate signal light of a preset wavelength and preprocess the generated signal light; a first wavelength division multiplexer for coupling the energy light and the preprocessed signal light; a hollow fiber for transmitting the energy light and the signal light coupled by the first wavelength division multiplexer; a second wavelength division multiplexer for separating the energy light and the signal light transmitted by the hollow fiber; and an energy conversion module and a signal conversion module. The energy conversion module is used to detect the power of the energy light separated by the second wavelength division multiplexer, and then convert the light energy of the energy light into an electrical signal. The signal conversion module is used to convert the signal light separated by the second wavelength division multiplexer into an electrical signal, adjust the intensity of the electrical signal, and detect the quality of the electrical signal.

[0026] Specifically, for Figure 1Explanation of each component: The HPLD (High Power Laser Diode) serves as the energy light source, generating a high-power optical signal to provide energy support for the system; the LD (Laser Diode) serves as the signal light source, generating an optical signal for information transmission; the PC (Polarization Controller) is used to control the polarization state of the optical signal to ensure that the optical signal has an appropriate polarization direction during transmission in the optical fiber, thereby optimizing the system performance; the LNM (Lithium Niobate Modulator) is used to modulate the signal light, converting the electrical signal into the modulation of the optical signal to achieve the intensity or phase modulation of the optical signal.; the ISO (Isolator) prevents the reflection and backpropagation of the optical signal, protecting the light source and modulator from the interference of the reverse light and improving the stability and performance of the system; the EDFA (Erbium-Doped Fiber Amplifier) is used to amplify the optical signal, compensating for the loss of the optical signal during fiber transmission and extending the transmission distance; the WDM (Wavelength Division Multiplexer) combines optical signals of different wavelengths for simultaneous transmission in a single optical fiber; it can also separate optical signals of different wavelengths in the same optical fiber; the HCF (Hollow-Core Fiber) has a core of air or other low-refractive-index media, with advantages such as low loss, low delay, and high laser damage threshold, and is used to transmit optical signals; the OPM (Optical Power Meter) is used to measure the power of the optical signal, detect the intensity of the optical signal, and evaluate the transmission efficiency and loss of the system; the HPPC (High Power Photonic Converter) converts the high-power optical signal into an electrical signal or other forms of energy for energy transmission and conversion; the PD (Photo Detector) converts the optical signal into an electrical signal for receiving and detecting the optical signal; the ATT (Attenuator) is used to adjust the intensity of the optical signal and reduce the power of the optical signal to meet the power requirements of different parts of the system; the SA (Spectrum Analyzer) is used to analyze the spectral characteristics of the optical signal, detect parameters such as the wavelength, bandwidth, and power spectral density of the optical signal, and evaluate the quality and performance of the optical signal.

[0027] In the embodiment of the present application, the signal transmission module further includes a signal light source, a polarization controller, a lithium phosphate modulator, an isolator, and an erbium-doped fiber amplifier connected in series in sequence, where the signal light source is used to emit signal light, the polarization controller is used to control the polarization state of the signal light, the lithium phosphate modulator is used to modulate the signal light, the isolator is used to prevent the signal light from reflecting and backpropagating, and the erbium-doped fiber amplifier is used to amplify the signal light.

[0028] Specifically, the first wavelength division multiplexer is used to couple the energy light and the signal light. The first wavelength division multiplexer includes at least two input ends respectively for inputting the energy light and the input signal light, and the output end of the first wavelength division multiplexer is connected to the input end of the hollow fiber. The output end of the erbium-doped fiber amplifier is connected to the input end of the first wavelength division multiplexer for inputting the signal light.

[0029] In the embodiment of the present application, a signal generator is connected in parallel with the lithium phosphate modulator, and the signal generator is used to drive the lithium phosphate modulator.

[0030] Specifically, the signal generator provides a stable and adjustable driving signal for the modulator, which can achieve precise modulation control, improve the modulation efficiency, enhance the flexibility and scalability of the system, and thus optimize the performance of the entire system.

[0031] In the embodiment of the present application, the energy conversion module includes a photometer and a photovoltaic converter connected in series in sequence, where the photometer is used to detect the power of the energy light, and the photovoltaic converter is used to convert the light energy of the energy light into electrical energy.

[0032] In the embodiment of the present application, the signal conversion module includes a photodetector, an electrical attenuator, and a signal analyzer connected in series in sequence. The photodetector is used to convert the light energy of the signal light into electrical energy, the electrical attenuator is used to adjust the intensity of the converted electrical signal, and the signal analyzer is used to detect the quality of the electrical signal.

[0033] Specifically, the second wavelength division multiplexer is used to separate the energy light and the signal light. The input end of the second wavelength division multiplexer is connected to the output end of the hollow fiber, and the second wavelength division multiplexer includes at least two output ends respectively connected to the energy light conversion module and the signal light conversion module. Among them, the photometer and the photodetector are respectively connected to the two output ends of the second wavelength division multiplexer.

[0034] In the embodiment of the present application, the set wavelength is 800 nm to 1100 nm. In the embodiment of the present application, the preset wavelength is 1500 nm to 1600 nm.

[0035] Specifically, based on the anti-resonant light guiding principle of the hollow-core fiber, there is a correlation between its transmission passband and the wall thickness of the embedded glass. By controlling the wall thickness of the embedded glass, the transmitted energy light and signal light can be made to be in the low-order anti-resonant band of the hollow-core fiber, and at the same time, a relatively wide transmission passband can be achieved. Therefore, a light source with a wavelength of 800 nm - 1100 nm can be used as the energy laser source, and a light source with a wavelength of 1500 nm - 1600 nm can be used as the signal laser source. Thus, the difference between the energy laser source and the signal laser source is relatively large, which can reduce the requirement for a wavelength division multiplexer with high isolation. By shifting the working wavelength of the energy light to the short-wavelength band, the power conversion efficiency can be significantly enhanced. At the same time, the line width of the energy light source is broadened to expand the stimulated Brillouin scattering threshold, making the energy light more stable and less susceptible to interference during transmission, reducing energy loss, and improving the transmission quality of the signal.

[0036] Figure 2 is the cross-sectional structure diagram of the hollow-core fiber provided by the embodiment of the present application. Figure 3 is the characteristic detection diagram of the hollow-core fiber provided by the embodiment of the present application.

[0037] Combined with reference to Figure 2 and Figure 3 , in the embodiment of the present application, the hollow-core fiber is a hollow-core fiber with a mode field diameter of 26 μm.

[0038] Specifically, the mode field diameter of the hollow-core fiber in the embodiment of the present application is much larger than that of the traditional single-mode fiber. Since the maximum transmitted optical power of a single fiber is limited by the non-linear power threshold Pth and is proportional to the mode field diameter, the hollow-core fiber in the embodiment of the present application has a larger Pth, so that higher-power energy light transmission can be achieved.

[0039] Furthermore, the hollow-core fiber in the embodiment of the present application has an inner double-nested structure, such that the light of the high-order mode has a large loss during transmission, and only the fundamental mode can be transmitted with low loss. This characteristic of approximate single-mode transmission avoids the mode dispersion problem existing in multi-mode fibers and improves the quality and stability of signal transmission. At the same time, in traditional large-core multi-mode fibers, the optical signals of different modes will be coupled and interfered with each other, resulting in signal distortion and limited transmission bandwidth. However, the hollow-core fiber with an inner double-nested structure reduces the inter-mode crosstalk by suppressing the transmission of high-order modes.

[0040] Such as Figure 3As shown, in the characteristic detection link of the hollow-core optical fiber, an OPM (Optical Power Meter) is used in the upstream to detect the power transmission efficiency characteristic of the energy light emitted by the LD (Laser Diode), and an OSA (Optical Spectrum Analyzer) is used in the downstream to detect the power transmission efficiency characteristic of the signal light emitted by the BL (Broadband Laser). At the same time, the truncation method is used to measure the losses of the power light and the signal light, and the truncation method can help to more accurately evaluate the loss characteristics of the optical fiber at different wavelengths.

[0041] Furthermore, a high-power photovoltaic converter is used to evaluate the power conversion efficiency. The high-power photovoltaic converter can efficiently convert the received energy light into an electrical signal. By measuring the ratio between the output electrical power and the input energy light power, the power conversion efficiency can be evaluated, and thus the performance of the energy transmission link can be reflected. A signal analyzer is used to evaluate the signal quality according to the Error Vector Magnitude (EVM). EVM is an important indicator for measuring signal quality, which reflects the difference between the actually received signal and the ideal signal. By measuring the EVM of the signal light after it is converted into an electrical signal, the degree of interference and distortion suffered by the signal during transmission can be judged, and thus the quality of the signal transmission link can be evaluated.

[0042] In the embodiment of the present application, the core of the hollow-core optical fiber is filled with a low-loss gas.

[0043] Specifically, the low-loss gas can greatly reduce the loss when the optical signal is transmitted in the gas, enabling the optical signal to be transmitted more completely to a farther distance. In high-power laser transmission, traditional optical fibers are easily damaged due to excessive optical power, while the hollow-core optical fiber filled with the low-loss gas can withstand higher optical power and has a higher damage threshold. The low-loss gas includes rare gases such as helium or neon, which have inactive chemical properties and little impact on the optical fiber environment.

[0044] Embodiments of the present application can be widely applied to various modern scenarios that require simultaneous signal and energy transmission, including but not limited to the following fields: (1) Integrated long-distance communication and power supply system. In remote communication scenarios, such as deep-sea communication, drone communication, or field monitoring stations, traditional solutions usually require separate design of communication links and power supply systems, which are complex in structure and high in cost. The present invention can transmit energy and signals simultaneously through a single optical fiber, simplify equipment deployment, power remote devices while ensuring communication, and improve the overall efficiency of the system. (2) Space exploration and energy transmission. In the energy and signal transmission requirements of satellite communication or space probes, the present invention can transmit high-power laser through a hollow optical fiber to power devices, and simultaneously transmit high-quality data signals, reduce the weight of devices and improve integration, meeting the requirements for efficient and stable transmission in the space environment. (3) Industrial automation and high-power device control. In industrial automation scenarios, many devices require precise long-distance control, but at the same time require high-power energy supply. The present invention realizes the coordinated transmission of energy and signals through a single optical fiber, can significantly simplify on-site wiring, and improve the reliability and flexibility of the system. (4) Fiber optic sensing and energy drive. In fiber optic sensing networks, the present invention can use hollow optical fibers to simultaneously transmit sensing signals and laser energy, power sensors and complete data transmission, suitable for sensor network deployment in remote or harsh environments. (5) Military communication and power supply. In military scenarios, such as battlefield communication equipment or unmanned device control, the present invention can realize the remote transmission of signals and energy through a single optical fiber, reduce the exposed area of devices, and improve concealment and anti-interference capabilities.

[0045] Figure 4 It is a flowchart of the energy and signal transmission method provided by the embodiments of the present application.

[0046] Refer to Figure 4 , Second, embodiments of the present application provide an energy and signal transmission method for performing photoelectric conversion on energy light and signal light based on the energy and signal transmission system of any of the above embodiments of the claims, including the following steps:

[0047] In step S101, generate energy light with a set wavelength and signal light with a preset wavelength, and preprocess the generated signal light.

[0048] In step S102, couple the energy light and the preprocessed signal light, and transmit them through a hollow optical fiber.

[0049] In step S103, separate the energy light and signal light transmitted by the hollow optical fiber, perform power detection on the energy light, then convert the light energy of the energy light into an electrical signal, and convert the signal light into an electrical signal, adjust the intensity of the electrical signal, and perform quality detection on the electrical signal.

[0050] In the embodiments of the present application, the preprocessing of the signal light includes: controlling the polarization state, modulation, isolation, and amplification.

[0051] For technical features and beneficial effects not mentioned in the embodiments of the present application, reference may be made to the comparative embodiments, which will not be elaborated herein.

[0052] In the embodiments of the present application, by inputting the energy light of a set wavelength and the signal light of a preset wavelength into the first wavelength division multiplexer, the hollow fiber can simultaneously transmit multiple different wavelengths of energy light and signal light, improving the transmission capacity of the hollow fiber. At the same time, the energy light and the signal light can be efficiently transmitted in the same hollow fiber without interfering with each other, further enhancing the transmission efficiency of the system.

[0053] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0054] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0055] The above description is only a specific implementation manner of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An energy and signal transmission system, characterized in that, Comprising: An energy light generation unit and a signal transmission module, where the energy transmission module is used to generate energy light of a set wavelength, the signal transmission module is used to generate signal light of a preset wavelength, and preprocess the generated signal light; A first wavelength division multiplexer for coupling the energy light and the preprocessed signal light; An air-core fiber for transmitting the energy light and the signal light coupled by the first wavelength division multiplexer; A second wavelength division multiplexer for separating the energy light and the signal light transmitted by the air-core fiber; And An energy conversion module and a signal conversion module, where the energy conversion module is used to detect the power of the energy light separated by the second wavelength division multiplexer, and then convert the light energy of the energy light into an electrical signal, and the signal conversion module is used to convert the signal light separated by the second wavelength division multiplexer into an electrical signal, adjust the intensity of the electrical signal, and perform quality detection on the electrical signal.

2. The energy and signal transmission system according to claim 1, wherein The signal transmission module further includes a signal light source, a polarization controller, a lithium phosphate modulator, an isolator, and an erbium-doped fiber amplifier connected in series in sequence, where the signal light source is used to emit signal light, the polarization controller is used to control the polarization state of the signal light, the lithium phosphate modulator is used to modulate the signal light, the isolator is used to prevent the reflection and back-propagation of the signal light, and the erbium-doped fiber amplifier is used to amplify the signal light.

3. An energy and signal transmission system according to claim 2, characterized in that, A signal generator is connected in parallel with the lithium phosphate modulator, and the signal generator is used to drive the lithium phosphate modulator.

4. An energy and signal transmission system according to claim 1, characterized in that, The energy conversion module includes an optical power meter and a photovoltaic converter connected in series in sequence, where the optical power meter is used to detect the power of the energy light, and the photovoltaic converter is used to convert the light energy of the energy light into electrical energy.

5. An energy and signal transmission system according to claim 1, characterized in that, The signal conversion module includes a photodetector, an electrical attenuator, and a signal analyzer connected in series in sequence, the photodetector is used to convert the light energy of the signal light into electrical energy, the electrical attenuator is used to adjust the intensity of the converted electrical signal, and the signal analyzer is used to perform quality detection on the electrical signal.

6. The energy and signal transmission system according to claim 1, wherein The set wavelength is 800nm to 1100nm.

7. An energy and signal transmission system according to claim 1, characterized in that, The preset wavelength is 1500nm to 1600nm.

8. An energy and signal transmission system according to claim 1, wherein, The air-core fiber is an air-core fiber with a mode field diameter of 26μm.

9. An energy and signal transmission method for performing optoelectronic conversion on energy light and signal light based on the energy and signal transmission system according to any one of claims 1 to 9, characterized in that Comprising: Generate energy light of a set wavelength and signal light of a preset wavelength, and preprocess the generated signal light; Couple the energy light and the preprocessed signal light, and transmit them through an air-core fiber; Separate the energy light and the signal light transmitted by the air-core fiber, detect the power of the energy light, then convert the light energy of the energy light into an electrical signal, and convert the signal light into an electrical signal, adjust the intensity of the electrical signal, and perform quality detection on the electrical signal.

10. A method for energy and signal transmission according to claim 9, characterized in that, The preprocessing of the signal light includes: controlling the polarization state, modulation, isolation, and amplification.

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