Photoelectric conversion device, control method and network equipment

Abstract

The invention discloses a photoelectric conversion device, a photoelectric conversion method and network equipment, which are used for avoiding optical loss caused by the fact that a plurality of light beams are synthesized into one light beam and realizing efficient signal transmission in an optical path. The device comprises a lens module and a photoelectric detection module, and the lens module is connected with the photoelectric detection module through an optical path and connected with light outlets of N optical fibers through optical paths. And the photoelectric detection module is used for performing photoelectric conversion on the N light beams focused on the detection target surface of the photoelectric detection module. The N light beams are light beams emitted by N light sources, the light inlets of the N optical fibers correspond to the N light sources, and N is an integer greater than or equal to 2. By means of the mode that the N light beams are directly focused on the detection target surface of the photoelectric detection module through the lens module, light loss caused by the fact that the N light beams are combined into one light beam in a coherent combination or incoherent combination mode is reduced, the purpose of reducing the light loss is achieved, and therefore the transmission efficiency of optical signals is improved.

Description

Photoelectric conversion device, control method and network equipment Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular to a photoelectric conversion device, a control method, and a network device. Background Art

[0002] With the continuous development of wireless communication technology and the increasing number of users, higher requirements have been placed on the efficiency of antennas and beams in wireless communication systems. To improve the efficiency of wireless communication systems, technicians have proposed combining multiple beams emitted by multiple wireless communication systems, performing photoelectric detection, and converting optical signals into electrical signals, which are then transmitted to the antenna. This method fully utilizes the fact that optical signals have higher transmission efficiency than electrical signals, thereby improving the efficiency of wireless communication systems.

[0003] In the method of achieving low-loss, high-power coupled detection of multiple beams using a single photodetector, when the beams are uncorrelated, incoherent combining is achieved using wavelength division multiplexing; when the beams are correlated, coherent combining is achieved using a beam combiner. Whether combining coherently or incoherently, combining multiple beams into a single beam incurs optical loss. Reducing optical loss and achieving efficient signal transmission along the optical path has become a challenge for researchers.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a photoelectric conversion device, a control method, and a network device for avoiding light loss caused by combining multiple light beams into one light beam, thereby achieving efficient signal transmission in an optical path.

[0006] In a first aspect, the present application provides a photoelectric conversion device, comprising a lens module and a photoelectric detection module; the lens module is connected to the photoelectric detection module via an optical path, and is connected to the light outlets of N optical fibers via an optical path, and is used to focus N light beams onto the detection target surface of the photoelectric detection module, the N light beams corresponding to N light sources, and the N light sources corresponding to the light inputs of the N optical fibers, where N is an integer greater than or equal to 2; the photoelectric detection module is used to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module.

[0007] In an embodiment of the present application, the photoelectric conversion device includes a lens module and a photoelectric detection module, wherein the lens module is connected to the photoelectric detection module through an optical path, and is connected to the light outlets of N optical fibers through an optical path, and is used to focus the N light beams onto the detection target surface of the photoelectric detection module. The photoelectric detection module is used to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module. The N light beams are light beams emitted by N light sources, and the light inlets of the N optical fibers correspond to the N light sources, and N is an integer greater than or equal to 2. By using the lens module to directly focus the N light beams onto the detection target surface of the photoelectric detection module, the light loss caused by combining the N light beams into one light beam by coherent combination or incoherent combination is reduced, thereby achieving the purpose of reducing light loss and improving the transmission efficiency of the optical signal.

[0008] In a possible implementation of the first aspect, the device further includes an optical fiber fixing module; the optical fiber fixing module is used to fix the N optical fibers.

[0009] In an embodiment of the present application, the device also includes a beam aggregation module for aggregating and fixing N optical fibers, thereby providing a stable shape for the light spot on the detection target surface of the photoelectric detection module focused by the N light beams, making the working area of ​​the detection target surface of the photoelectric detection module tend to be stable, avoiding the situation where the photoelectric detection module cannot receive all the light signals of the N light beams due to the difficulty in controlling the positions of the N light beams, thereby improving the efficiency of photoelectric conversion.

[0010] In a possible implementation of the first aspect, the optical fiber fixing module is connected to the N optical fibers, connected to the lens module via an optical path, and outputs the N light beams.

[0011] In the embodiment of the present application, a beam focusing module is provided, connected to N optical fibers, and optically connected to a lens module, to output the N light beams. This provides a stable light spot configuration for the N light beams focused onto the detection target surface of the photoelectric detection module, thereby stabilizing the working area of ​​the detection target surface of the photoelectric detection module. This avoids the situation in which the photoelectric detection module cannot receive all the light signals from the N light beams due to difficulty in controlling their positions, thereby improving the efficiency of photoelectric conversion.

[0012] In a possible implementation of the first aspect, the distance between the light outlets of the N optical fibers and the lens module is L1, the spot diameter of the N light beams on the lens module is, and the relationship between L1 and the lens module complies with the propagation law of Gaussian beams.

[0013] In the embodiment of the present application, since the N light beams follow the propagation law of Gaussian beams, the relationship between L1 and follows the propagation law of Gaussian beams. Where L1 is the distance between the light outlet of the N optical fibers and the lens module, and is the spot diameter of the N light beams on the lens module. The relationship between L1 and follows the propagation law of Gaussian beams.

[0014] In a possible implementation of the first aspect, the diameter of the lens module is D, and D is larger than said.

[0015] In the embodiment of the present application, to ensure that the light of the N light beams can be completely detected by the photoelectric detection unit, D is greater than . Making D greater than avoids unnecessary consumption of the light of the N light beams during transmission, thereby improving the efficiency and quality of optical signal transmission.

[0016] In a possible implementation of the first aspect, a distance between the lens module and a detection target surface of the photoelectric detection module is L2, a focal length of the lens module is F, and L2 is less than or equal to F.

[0017] In the embodiment of the present application, the distance between the lens module and the detection target surface of the photoelectric detection module is L2, the focal length of the lens module is F, and L2 is less than or equal to F. To ensure that the N light beams do not become unfocused when propagating to the detection target surface of the photoelectric detection module, L2 is restricted to be less than or equal to F, further providing direction for the design of the photoelectric conversion device.

[0018] In a possible implementation of the first aspect, the lens module includes an aspherical lens.

[0019] In a possible implementation of the first aspect, the lens module further includes a microlens array, wherein the microlenses of the microlens array correspond one-to-one to the optical fibers of the optical fiber fixing module, and are used to focus the N light beams output by the optical fiber fixing module onto the detection target surface of the photoelectric detection module.

[0020] In a possible implementation of the first aspect, the lens module further includes a reflector for changing the directions of the N light beams output by the optical fiber fixing module and refracting them to a detection target surface of the photoelectric detection module.

[0021] In a possible implementation of the first aspect, an angle between the axis of the reflector and the axis of the microlens group and / or the axis of the aspheric lens group is 45°.

[0022] In a possible implementation of the first aspect, the optical fiber fixing module includes an optical fiber array or a multi-core optical fiber.

[0023] In a possible implementation of the first aspect, the multi-core optical fiber includes 19 optical fibers, and the 19 optical fibers are arranged in a three-layer ring. The innermost layer of the multi-core optical fiber includes 1 optical fiber, the middle layer of the multi-core optical fiber includes 6 optical fibers, and the outermost layer of the multi-core optical fiber includes 12 optical fibers. The distance between the innermost layer of the multi-core optical fiber and the middle layer of the multi-core optical fiber is 42 μm, and the distance between the outermost layer of the multi-core optical fiber and the middle layer of the multi-core optical fiber is 48 μm.

[0024] In a possible implementation of the first aspect, the distance between adjacent optical fibers in the multi-core optical fiber is 42 μm.

[0025] In a possible implementation of the first aspect, the optical fiber array includes a linear optical fiber array or a two-dimensional optical fiber array.

[0026] In a possible implementation of the first aspect, the distance between adjacent optical fibers in the linear optical fiber array is 250 μm.

[0027] In a possible implementation of the first aspect, the distance between adjacent optical fibers in the two-dimensional optical fiber array is 250 μm.

[0028] A second aspect of an embodiment of the present application provides a method for controlling photoelectric conversion, which is applied to a photoelectric conversion device, the device including a control module, a first photoelectric conversion device, and a second photoelectric conversion device, the method including:

[0029] The control module obtains wavelengths of N light beams, where the N light beams are light beams emitted by N light sources;

[0030] The control module determines whether the N light beams are coherent light;

[0031] If the N light beams are coherent light, the control module sends a first signal to the first photoelectric conversion device, the first signal instructing the first photoelectric conversion device to be connected to the light outlets of the N optical fibers through an optical path;

[0032] If the N light beams are incoherent light, the control module sends a second signal to the second photoelectric conversion device,

[0033] The second signal indicates that the second photoelectric conversion device is connected to the light outlets of the N optical fibers through an optical path.

[0034] In a possible implementation of the second aspect, the first photoelectric conversion device includes a first lens module, a first photoelectric detection module, and a first optical fiber fixing module, and the first optical fiber fixing module is used to fix the N optical fibers;

[0035] The first lens module is connected to the first photoelectric detection module through an optical path, and is used to focus the N light beams on the detection target surface of the first photoelectric detection module;

[0036] The first photoelectric detection module is used to convert the N light beams collected by the detection target surface of the first photoelectric detection module into electrical signals.

[0037] In a possible implementation of the second aspect, the first optical fiber fixing module is connected to the N optical fibers, connected to the first lens module via an optical path, and outputs the N light beams.

[0038] In a possible implementation of the second aspect, the distance between the light outlets of the N optical fibers and the first lens module is L1, the spot diameter of the N light beams on the first lens module is, and the relationship between L1 and the follows the propagation law of Gaussian beams.

[0039] In a possible implementation of the second aspect, the diameter of the first lens module is D, and D is larger than that.

[0040] In a possible implementation of the second aspect, a distance between the first lens module and a detection target surface of the first photoelectric detection module is L2, a focal length of the first lens module is F, and L2 is less than or equal to F.

[0041] In a possible implementation of the second aspect, the first lens module includes a first aspherical lens.

[0042] In a possible implementation of the second aspect, the first lens module further includes a first microlens array, the microlenses of the first microlens array corresponding one-to-one to the optical fibers of the first optical fiber fixing module, and being used to focus the N light beams output by the first optical fiber fixing module onto the detection target surface of the first photoelectric detection module.

[0043] In a possible implementation of the second aspect, the first lens module further includes a first reflector for changing the directions of the N light beams output by the first optical fiber fixing module and refracting them to the detection target surface of the first photoelectric detection module.

[0044] In a possible implementation of the second aspect, an angle between the axis of the first reflector and the axis of the first microlens group and / or the axis of the first aspheric lens group is 45°.

[0045] In a possible implementation of the second aspect, the first optical fiber fixing module includes a first optical fiber array or a first multi-core optical fiber.

[0046] In a possible implementation of the second aspect, a distance between adjacent optical fibers in the first multi-core optical fiber is 42 μm.

[0047] In a possible implementation of the second aspect, the first optical fiber array includes a first linear optical fiber array or a first two-dimensional optical fiber array.

[0048] In a possible implementation of the second aspect, a distance between adjacent optical fibers in the first linear optical fiber array is 250 μm.

[0049] In a possible implementation of the second aspect, a distance between adjacent optical fibers in the first two-dimensional optical fiber array is 250 μm.

[0050] In a possible implementation of the second aspect, the second photoelectric conversion device includes a second lens module, a second photoelectric detection module, and a second optical fiber fixing module, and the second optical fiber fixing module is used to fix the N optical fibers;

[0051] The second lens module is connected to the second photoelectric detection module through an optical path, and is used to focus the N light beams on the detection target surface of the second photoelectric detection module;

[0052] The second photoelectric detection module is used to convert the N light beams collected by the detection target surface of the second photoelectric detection module into electrical signals.

[0053] In a possible implementation of the second aspect, the second optical fiber fixing module is connected to the N optical fibers, is connected to the second lens module via an optical path, and outputs the N light beams.

[0054] In a possible implementation of the second aspect, the distance between the light outlets of the N optical fibers and the second lens module is L1, the spot diameter of the N light beams on the second lens module is, and the relationship between L1 and the follows the propagation law of Gaussian beams.

[0055] In a possible implementation of the second aspect, the diameter of the first lens module is D, and D is larger than that.

[0056] In a possible implementation of the second aspect, the distance between the second lens module and the detection target surface of the second photoelectric detection module is L2, the focal length of the second lens module is F, and L2 is less than or equal to F.

[0057] In a possible implementation of the second aspect, the second lens module includes a first aspheric lens.

[0058] In a possible implementation of the second aspect, the second lens module further includes a second microlens array, the microlenses of the second microlens array corresponding one-to-one to the optical fibers of the second optical fiber fixing module, and being used to focus the N light beams output by the second optical fiber fixing module onto the detection target surface of the second photoelectric detection module.

[0059] In a possible implementation of the second aspect, the second lens module further includes a second reflector for changing the directions of the N light beams output by the second optical fiber fixing module and refracting them to the detection target surface of the second photoelectric detection module.

[0060] In a possible implementation of the second aspect, the angle between the axis of the second reflector and the axis of the second microlens group and / or the axis of the second aspheric lens group is 45°.

[0061] In a possible implementation of the second aspect, the second optical fiber fixing module includes a second optical fiber array or a second multi-core optical fiber.

[0062] In a possible implementation of the second aspect, the second multi-core optical fiber includes 19 optical fibers, and the 19 optical fibers are arranged in three circular layers. The innermost layer of the 19 optical fibers includes 1 optical fiber, the middle layer of the 19 optical fibers includes 6 optical fibers, and the outermost layer of the 19 optical fibers includes 12 optical fibers. The distance between the innermost layer of the 19 optical fibers and the middle layer of the 19 optical fibers is 42 μm, and the distance between the outermost layer of the 19 optical fibers and the middle layer of the 19 optical fibers is 48 μm.

[0063] A third aspect of the embodiments of the present application provides a method for controlling photoelectric conversion, which is applied to a device for photoelectric conversion, the device comprising a lens module and a photoelectric detection module, the lens module being connected to the photoelectric detection module via an optical path, and connected to light outlets of N optical fibers via an optical path, and being configured to focus N light beams onto a detection target surface of the photoelectric detection module, the N light beams corresponding to N light sources, and the light inlets of the N optical fibers corresponding to the N light sources, where N is an integer greater than or equal to 2; the photoelectric detection module being configured to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module, the method comprising:

[0064] The control module obtains the wavelengths of N light beams emitted by N light sources;

[0065] The control module determines whether the N light beams are coherent light;

[0066] If the N light beams are coherent light, the control module sends a first signal, the first signal indicating that L2 is less than F, where L2 is the distance between the lens module and the detection target surface of the photoelectric detection module, and F is the focal length of the lens module;

[0067] If the N light beams are incoherent light, the control module sends a second signal, where the second signal indicates that L2 is equal to F.

[0068] In a possible implementation of the third aspect, the device further includes an optical fiber fixing module;

[0069] The optical fiber fixing module is used to fix the N optical fibers.

[0070] In a possible implementation of the third aspect, the optical fiber fixing module is connected to the N optical fibers, connected to the lens module via an optical path, and outputs the N light beams.

[0071] In a possible implementation of the third aspect, the distance between the light outlets of the N optical fibers and the lens module is L1, the spot diameter of the N light beams on the lens module is, and the relationship between L1 and the lens module complies with the propagation law of Gaussian beams.

[0072] In a possible implementation of the third aspect, the diameter of the lens module is D, and D is larger than said.

[0073] In a possible implementation of the third aspect, the lens module includes an aspherical lens.

[0074] In a possible implementation of the third aspect, the lens module further includes a microlens array, wherein the microlenses of the microlens array correspond one-to-one to the optical fibers of the optical fiber fixing module, and are used to focus the N light beams output by the optical fiber fixing module onto the detection target surface of the photoelectric detection module.

[0075] In a possible implementation of the third aspect, the lens module further includes a reflector for changing the directions of the N light beams output by the optical fiber fixing module and refracting them to a detection target surface of the photoelectric detection module.

[0076] In a possible implementation of the third aspect, the angle between the axis of the reflector and the axis of the microlens group and / or the axis of the aspheric lens group is 45°.

[0077] In a possible implementation of the third aspect, the optical fiber fixing module includes an optical fiber array or a multi-core optical fiber.

[0078] A fourth aspect of an embodiment of the present application provides a network device, comprising an optoelectronic conversion device, a processor and a memory, wherein the memory is used to store instructions, and the processor is used to execute the instructions. The device is such as the device described in the first aspect or any possible implementation manner of the first aspect.

[0079] In a fifth aspect, an embodiment of the present application provides a network device, including a processor and a memory, wherein the memory is used to store instructions, and the processor is used to execute the instructions. When the processor executes the instructions, it executes the method described in the second aspect or any possible implementation method of the second aspect.

[0080] In a sixth aspect, an embodiment of the present application provides a network device, including a processor and a memory, wherein the memory is used to store instructions, and the processor is used to execute the instructions. When the processor executes the instructions, the method described in any possible implementation method of the third aspect to the third aspect is executed.

[0081] A seventh aspect of the embodiments of the present application provides a computer-readable storage medium, characterized in that it includes a program that, when executed on a computer, performs the method described in any possible implementation of the second aspect to the second aspect.

[0082] An eighth aspect of the embodiments of the present application provides a computer-readable storage medium, characterized in that it includes a program that, when run on a computer, enables the computer to execute the method described in the third aspect or any possible implementation method of the third aspect.

[0083] A ninth aspect of the embodiments of the present application provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are run on a computer, the computer executes the method described in any possible implementation method of the second aspect to the second aspect.

[0084] In a tenth aspect, an embodiment of the present application provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are run on a computer, the computer executes the method described in any possible implementation method of the third aspect to the third aspect.

[0085] In an eleventh aspect of an embodiment of the present application, a chip is provided, which includes at least one processor and at least one interface circuit, which is coupled to the processor. The at least one interface circuit is used to perform transceiver functions and send instructions to the at least one processor. The at least one processor is used to run computer programs or instructions, which has the function of implementing the method of the second aspect, any possible implementation of the second aspect, the third aspect or any possible implementation of the third aspect. The function can be implemented by hardware, software, or a combination of hardware and software. The hardware or software includes one or more modules corresponding to the above functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] FIG1 is a schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application;

[0087] FIG2 is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application;

[0088] FIG3a is a schematic structural diagram of a lens module provided in an embodiment of the present application;

[0089] FIG3 b is a schematic structural diagram of an optical fiber fixing module provided in an embodiment of the present application;

[0090] FIG4 is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application;

[0091] FIG5 is a schematic diagram of a distribution of a light field of N light beams provided in an embodiment of the present application;

[0092] FIG6 is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application;

[0093] FIG7 is a cross-sectional view of a multi-core optical fiber provided in an embodiment of the present application;

[0094] FIG8 is a schematic diagram of another distribution of the light field of N light beams provided in an embodiment of the present application;

[0095] FIG9 is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application;

[0096] FIG10 is a schematic diagram of another distribution of the light field of N light beams provided in an embodiment of the present application;

[0097] FIG11 is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application;

[0098] FIG12 is a schematic diagram of a photoelectric conversion method provided in an embodiment of the present application;

[0099] FIG13 is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application;

[0100] FIG14 is another schematic diagram of a method for controlling photoelectric conversion provided in an embodiment of the present application;

[0101] FIG15 is a schematic structural diagram of a control module provided in an embodiment of the present application;

[0102] FIG16 is a schematic diagram of a structure of a network device provided in an embodiment of the present application;

[0103] FIG17 is another structural diagram of a control module provided in an embodiment of the present application;

[0104] FIG18 is another structural diagram of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0105] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation methods of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application. It is known to those skilled in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0106] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, and this is merely a way of distinguishing the objects of the same properties when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0107] With the continuous advancement of wireless communication technology and the increasing number of users, higher requirements are being placed on the efficiency of antennas and beams in wireless communication systems. Phased array antennas are widely used in radar and wireless communication systems due to their advantages such as high gain, beam agility, multi-beam, high reliability, and lightweight design. Antenna arrays often use multiple sub-arrays to allocate resources. With the rapid increase in communication rates and the number of users, the demand for the number of antenna elements and beams in phased array antennas has also increased dramatically. A fully connected architecture enables multi-beam sharing of array resources, improving antenna gain, increasing radiation range, and supporting simultaneous communication among multiple users. However, due to system size and cabling losses, traditional electrically connected solutions are significantly limited in terms of performance, such as the number of beams, power consumption, and bandwidth.

[0108] In order to break through the limitations and improve the overall performance of wireless communication systems, technicians have proposed using an optically fully connected architecture to combine and transmit multiple signals, thereby achieving multi-beam shared array aperture. Specifically, after combining multiple beams carrying wireless signals, photoelectric conversion is completed through photoelectric detection, and multi-stream electrical signals are directly output and radiated through the antenna. Replacing electrical beam combining with optical beam combining effectively utilizes the low transmission loss and strong wavelength multiplexing capability of light to improve the working efficiency of wireless communication systems. Among them, how to achieve coupled detection of multiple beams based on a single detector is the key to this architecture.

[0109] In low-loss, high-power coupled detection methods for multiple beams using a single photodetector, wavelength division multiplexing (WDM) can be used to combine incoherent beams when they are incoherent. When they are correlated, a beam combiner can be used to combine them coherently. Whether combining coherently or incoherently, combining multiple beams into a single beam incurs optical loss. Reducing this loss and achieving efficient signal transmission along the optical path is a crucial challenge for researchers.

[0110] Based on the above problems, the present application proposes that a lens module and a photoelectric detection module can be used to focus and photoelectrically convert N light beams emitted by N light sources. The lens module is connected to the photoelectric detection module via an optical path, and is also connected to the light outlets of N optical fibers via an optical path, for focusing the N light beams onto the detection target surface of the photoelectric detection module. The N light beams correspond to the N light sources, and the light inlets of the N optical fibers correspond to the N light sources, where N is an integer greater than or equal to 2. The photoelectric detection module performs photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module. There is no need to aggregate the N light beams emitted by the N light sources, thereby avoiding the light loss caused by aggregating multiple light beams into one beam and achieving efficient signal transmission in the optical path.

[0111] Based on the above ideas, the photoelectric conversion device provided by the embodiment of the present application is introduced below with reference to the accompanying drawings:

[0112] Please refer to FIG1 , which is a schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application.

[0113] The photoelectric conversion device includes a lens module 101 and a photoelectric detection module 102 .

[0114] The lens module 101 is optically connected to the photoelectric detection module 102 and to the light output ports of the N optical fibers 103, and is configured to focus the N light beams onto the detection target surface of the photoelectric detection module 102. The N light beams are emitted by the N light sources 104, and the light input ports of the N optical fibers 103 correspond to the N light sources 104, where N is an integer greater than or equal to 2.

[0115] The photoelectric detection module 102 is used to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module 102 .

[0116] In the photoelectric conversion device shown in Figure 1 , N light sources 104 emit N light beams, which then enter N optical fibers 103 from their light input ports and propagate through them. When these N light beams exit the light output ports of the N optical fibers 103, they propagate along an optical path to the lens module 101 according to the propagation rules of light in air. The lens module 101 alters the propagation paths of the N light beams so that after exiting the lens module 101, they are focused along the optical path onto the detection target surface of the photoelectric detection module 102. The photoelectric detection module 102 then performs photoelectric conversion on the N light beams focused onto the detection target surface, converting them from optical signals into electrical signals for subsequent propagation and processing.

[0117] In an embodiment of the present application, the photoelectric conversion device includes a lens module 101 and a photoelectric detection module 102, wherein the lens module 101 is connected to the photoelectric detection module 102 through an optical path, and is connected to the light outlets of N optical fibers 103 through an optical path, and is used to focus N light beams onto the detection target surface of the photoelectric detection module 102. The photoelectric detection module 102 is used to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module 102. The N light beams are light beams emitted by N light sources 104, and the light inlets of the N optical fibers 103 correspond to the N light sources 104, where N is an integer greater than or equal to 2. By using the lens module 101 to directly focus the N light beams onto the detection target surface of the photoelectric detection module 102, the light loss caused by combining the N light beams into one light beam by coherent combination or incoherent combination is reduced, thereby achieving the purpose of reducing the light loss caused by the solution, thereby improving the transmission efficiency of the optical signal.

[0118] In order to maintain a certain shape of the N light beams focused on the target surface of the photoelectric detection module 102, the photoelectric conversion device may further include an optical fiber fixing module.

[0119] The photoelectric conversion device includes a lens module 101 , a photoelectric detection module 102 and an optical fiber fixing module 105 .

[0120] The lens module 101 is optically connected to the photoelectric detection module 102 and to the light output ports of the N optical fibers 103, and is configured to focus the N light beams onto the detection target surface of the photoelectric detection module 102. The N light beams are emitted by the N light sources 104, and the light input ports of the N optical fibers 103 correspond to the N light sources 104, where N is an integer greater than or equal to 2.

[0121] The photoelectric detection module 102 is used to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module 102 .

[0122] The optical fiber fixing module 105 is connected to the N optical fibers 103 and the lens module 101 via an optical path, and is used to fix the N optical fibers 103 and output N light beams from the light outlet of the optical fiber fixing module 105 to the lens module 101 .

[0123] In the photoelectric conversion device shown in Figure 2, N light sources 104 emit N light beams, which then enter N optical fibers 103 from their light input ports and propagate through them. When these N light beams exit the light output ports of the N optical fibers 103, they propagate along an optical path to the lens module 101 according to the propagation rules of light in air. The lens module 101 alters the propagation paths of the N light beams so that after exiting the lens module 101, they are focused along the optical path onto the detection target surface of the photoelectric detection module 102. The photoelectric detection module 102 then performs photoelectric conversion on the N light beams focused onto the detection target surface, converting them from optical signals into electrical signals for subsequent propagation and processing. The optical fiber fixing module 105 secures the N optical fibers 103 and maintains the relative distance between any two of the N optical fibers.

[0124] In an embodiment of the present application, the optical fiber fixing module 105 can fix N optical fibers 103, thereby providing a stable shape for the light spot on the detection target surface of the photoelectric detection module 102 where the N light beams are focused, so that the working area of ​​the detection target surface of the photoelectric detection module 102 tends to be stable, avoiding the situation where the photoelectric detection module 102 cannot receive all the light signals of the N light beams due to the difficulty in controlling the positions of the N light beams, thereby improving the efficiency of photoelectric conversion.

[0125] In the photoelectric conversion device shown in FIG. 1 and / or FIG. 2 , the lens module 101 and the optical fiber fixing module 105 may have various forms. The following describes some possible shapes and arrangements of the lens module 101 and the optical fiber fixing module 105 :

[0126] Please refer to FIG3 a , which is a schematic structural diagram of a lens module provided in an embodiment of the present application.

[0127] The lens module 101 in the photoelectric conversion device can have various forms. For example, it can be the aspheric lens 1011 shown in Figure 3a, the microlens array 1012 shown in Figure 3a, the combination 1 of the aspheric lens 1011 and the microlens array 1012 shown in Figure 3a, the combination 2 of the aspheric lens 1011 and the reflector 1013 shown in Figure 3a, the combination 3 of the microlens array 1012 and the reflector 1013 shown in Figure 3a, and can also be the combination 4 of the microlens array 1011, the aspheric lens 1012 and the reflector 1013 shown in Figure 3a.

[0128] It is understandable that the description of the lens module 101 here is only an example. In actual applications, when the lens module 101 is combined, the form and order of the combination are not limited. The lens module 101 can have multiple lens combinations, which is not limited here.

[0129] Please refer to FIG3b, which is a schematic structural diagram of an optical fiber fixing module provided in an embodiment of the present application.

[0130] The optical fiber fixing module 105 in the photoelectric conversion device can also have various forms. For example, the optical fiber fixing module 105 can be the optical fiber array 1051 or the multi-core optical fiber 1052 shown in Figure 3b, where the optical fiber array 1051 can also be a linear optical fiber array 10511 and a two-dimensional optical fiber array 10512 according to its distribution form.

[0131] It is understandable that the description of the optical fiber fixing module 105 here is only an example. In actual applications, the optical fiber fixing module 105 can also have other forms not shown in Figure 3b, which is not limited here.

[0132] Based on the above structure, since the N light beams emitted by the N light sources 104 can be coherent light or incoherent light, the photoelectric conversion device provided in the embodiment of the present application will be introduced below in combination with specific application scenarios, focusing on the cases where the N light beams are coherent light and incoherent light.

[0133] When the N light beams are incoherent light, adjacent light beams affect each other near the detection target surface of the photoelectric conversion module 102, resulting in incoherent light coupling. Therefore, when the N light beams are incoherent light, the distance between the N light beams can be limited to fully utilize the situation that incoherent light coupling will occur due to the close distance between the incoherent light beams, so that the energy of the N light beams on the detection target surface of the photoelectric conversion module 102 is more concentrated and average, achieving the effect of a uniform light field.

[0134] Therefore, we first introduce the case where N beams are incoherent and N is 19:

[0135] In this case, since different forms of the optical fiber fixing module 105 will lead to different production, the optical fiber fixing module 105 as an optical fiber array 1051 and the optical fiber fixing module 105 as a multi-core optical fiber 1052 will be introduced respectively in conjunction with the accompanying drawings.

[0136] Please refer to FIG4 , which is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application.

[0137] The photoelectric conversion device includes an aspheric lens 1011 , a photoelectric detection module 102 and an optical fiber array 1051 .

[0138] N light sources 104 are connected to the optical fiber array 1051 via N optical fibers 103 to emit N light beams, where N is an integer greater than or equal to 2.

[0139] The optical fiber array 1051 is connected to the aspheric lens 1011 through an optical path, and is used to fix N optical fibers 103 and output N light beams from the light outlet of the optical fiber array 1051 .

[0140] The aspheric lens 1011 is connected to the photoelectric detection module 102 through an optical path. By utilizing the characteristic that the aspheric lens can change the transmission path of light, N light beams are focused onto the detection target surface of the photoelectric detection module 102 .

[0141] The photoelectric detection module 102 is used to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module 102 .

[0142] To facilitate understanding, the following describes the transmission paths of N light beams: In the photoelectric conversion device shown in FIG4 , N light sources 104 emit N light beams. These light beams then enter N optical fibers 103 from their light input ports and propagate through these fibers. Upon exiting the light output port of the fiber array 1051, the N light beams propagate along the optical path to the aspheric lens 1011, according to the propagation rules of light in air. The aspheric lens 1011 alters the propagation paths of the N light beams, focusing them along the optical path onto the detection target surface of the photoelectric detection module 102. The photoelectric detection module 102 then performs photoelectric conversion on the N light beams focused onto the detection target surface, converting them from optical signals into electrical signals for subsequent transmission and processing. The fiber array 1051 secures the N optical fibers 103 and maintains the relative distance between any two of the N optical fibers.

[0143] Optionally, the optical fiber array 1051 here can be the linear optical fiber array 10511 described in FIG. 3 b , or the two-dimensional optical fiber array 10512 described in FIG. 3 b , without limitation. To fully utilize the characteristic that adjacent incoherent light beams can overlap and transmit and couple, the present embodiment only describes the case where the optical fiber array 1051 is the two-dimensional optical fiber array 10512.

[0144] It can be understood that the aspheric lens 1011 here can also be any possible form of the lens module 101 described in the aforementioned Figure 3a. There is no limitation here. In actual applications, it should be set in combination with specific application scenarios. The embodiment of this application only uses the aspheric lens 1011 as an example for illustration and introduction.

[0145] Optionally, the distance between the light outlet of the optical fiber array 1051 and the aspheric lens 1011 is L1. Since the transmission of the N light beams in space follows the propagation law of the Gaussian beam, the spot diameter D of the N light beams on the aspheric lens 1011 can be obtained by combining L1. N .

[0146] In the embodiment of the present application, since the N light beams follow the propagation law of Gaussian beams, L1 and D N The relationship between follows the propagation law of Gaussian beam. Where L1 is the distance between the light outlet of N optical fibers and the lens module, D N is the spot diameter of N beams on the lens module. N The relationship between follows the propagation law of Gaussian beam.

[0147] Furthermore, the diameter of the aspheric lens 1011 is D. In order for the aspheric lens 1011 to fully transmit all the optical signals of the N light beams after they are emitted from the light outlets of the N optical fibers into the air, D is greater than D N .

[0148] In the embodiment of the present application, in order to ensure that the light of N light beams can be completely detected by the photoelectric detection unit, D is greater than D N . Make D greater than D N , avoiding unnecessary consumption of N light beams during transmission, and improving the efficiency and quality of optical signal transmission.

[0149] It is understandable that the difference between D and D N The description of the size relationship of D is only an example. In actual application, D and D should be set according to the specific application scenario and specific usage requirements. N , there is no restriction here.

[0150] Optionally, the distance between the aspheric lens 1011 and the detection target surface of the photoelectric detection module 102 is L2, and the focal length of the aspheric lens 1011 is F. In order to ensure that the N light beams can be effectively focused onto the detection target surface of the photoelectric detection module 102, L2 and F should satisfy that L2 is less than or equal to F.

[0151] In the embodiment of the present application, the distance between the lens module and the detection target surface of the photoelectric detection module is L2, the focal length of the lens module is F, and L2 is less than or equal to F. To ensure that the N light beams do not become unfocused when propagating to the detection target surface of the photoelectric detection module, L2 is restricted to be less than or equal to F, further providing direction for the design of the photoelectric conversion device.

[0152] It is understandable that the description of the size relationship between L2 and F here is only an example. In actual applications, L2 and F should be set in combination with specific application scenarios and specific usage requirements, and no restrictions are made here.

[0153] Alternatively, the specific arrangement of the N optical fibers can be seen in the cross-sectional view of the optical fiber array 1051 in FIG4 . When the optical fiber array 1051 is a linear optical fiber array 10511 , the distance between adjacent optical fibers is 250 μm. When the optical fiber array 1051 is a two-dimensional optical fiber array, the distance between adjacent optical fibers is 250 μm.

[0154] It is understandable that the description of the distance between adjacent optical fibers in the optical fiber array 1051 here is only an example. In actual applications, it can also be set in combination with specific application scenarios, and there is no limitation here.

[0155] In order to more intuitively demonstrate the effect brought by the photoelectric conversion device shown in Figure 4, the effect of the photoelectric conversion device in uniformly distributing the light field of N light beams will be introduced below in combination with Figure 5. Figure 5 is a schematic diagram of the distribution of the light field of N light beams provided in an embodiment of the present application.

[0156] As can be seen from FIG5 , when a light beam is focused on the detection target surface of the photoelectric detection module 102, the light field of the light beam on the detection target surface of the photoelectric detection module 102 is shown in FIG5 . The light field distribution of the light beam follows the distribution of the Gaussian beam, and in the light field distribution of the light beam, the peak power density of the light field is 2.07e 3 W / cm 2 , wherein the light beam is a light beam obtained by incoherently combining N light beams through a wavelength division multiplexing device. Modeling and simulation of the device shown in FIG4 show that, in the device shown in FIG4 , the light field of the N light beams on the detection target surface of the photoelectric detection module 102 is shown in FIG5 , and in the light field distribution of the 19 light beams, the peak power density of the light field is 1.2e 3 W / cm 2 In addition, when the incoherent beams among the N light beams are combined and focused on the detection target surface of the photoelectric detection module 102, the spot diameter of the beam is ±280μm; and when the 19 light beams are focused on the detection target surface of the photoelectric detection module 102, the spot diameter of the 19 light beams is ±210μm.

[0157] In an embodiment of the present application, based on the above simulation results, in the photoelectric conversion device shown in Figure 4, for the situation where multiple light beams need to be photoelectrically converted, first, the detection of a combined light beam is changed to the detection of N light beams. Secondly, by adjusting the distance between the aspheric lens 1011 and the light matrix 1051 and the distance between the aspheric lens 1011 and the photoelectric detection module 102, the N light beams are focused to different spatial positions of the detection target surface of the photoelectric detection module 102, thereby reducing the peak power density of the light field by 42%, effectively improving the upper limit of the receiving power of the detection target surface of the photoelectric detection module 102, and improving the damage threshold; and reducing the spot diameter of the light beam by 25%, so that under the same area, the diameter of the detection target surface of the photoelectric detection module 102 can be further reduced in the photoelectric conversion device, which provides the possibility of miniaturization and high frequency of the solution.

[0158] The following describes the case where the optical fiber fixing module 105 is a multi-core optical fiber 1052 .

[0159] Please refer to FIG. 6 , which is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application.

[0160] The photoelectric conversion device includes an aspheric lens 1011 , a microlens array 1012 , a photoelectric detection module 102 and a multi-core optical fiber 1052 .

[0161] N light sources 104 are connected to the multi-core optical fiber 1052 via N optical fibers 103 to emit N light beams, where N is an integer greater than or equal to 2.

[0162] The multi-core optical fiber 1052 is connected to the microlens array 1012 through an optical path, and is used to fix the N optical fibers 103 and output N light beams from the light outlet of the multi-core optical fiber 1052 .

[0163] The microlens array 1012 is connected to the aspheric lens 1011 through an optical path, and is used to change the transmission paths of the N light beams.

[0164] The aspheric lens 1011 is connected to the photoelectric detection module 102 through an optical path. The aspheric lens can change the transmission path of light by using the characteristic of the aspheric lens to change the transmission path of N light beams, so that the N light beams are focused onto the detection target surface of the photoelectric detection module 102.

[0165] The photoelectric detection module 102 is used to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module 102 .

[0166] For ease of understanding, the transmission paths of N light beams are described below: In the photoelectric conversion device shown in FIG6 , after N light sources 104 emit N light beams, the N light beams enter the N optical fibers 103 from the light input ports of the N optical fibers 103 and are transmitted through the N optical fibers 103. When the N light beams exit the light output port of the multi-core optical fiber 1052, they propagate along the optical path to the microlens array 1012 according to the propagation rules of light in air. After the transmission paths of the N light beams are changed by the microlens array 1012, they propagate along the optical path to the aspheric lens 1011. The aspheric lens 1011 changes the propagation paths of the N light beams so that the N light beams, after being emitted from the aspheric lens 1011, are focused along the optical path to the detection target surface of the photoelectric detection module 102. The photoelectric detection module 102 performs photoelectric conversion on the N light beams focused on the detection target surface of the photoelectric detection module 102, converting the N light beams from optical signals into electrical signals for subsequent propagation and processing. The multi-core optical fiber 1052 fixes the N optical fibers 103 and maintains the relative distance between any two of the N optical fibers.

[0167] Optionally, the multi-core optical fiber 1052 includes 19 optical fibers, and the arrangement of the 19 optical fibers is shown in FIG7 , which is a cross-sectional view of the multi-core optical fiber provided in an embodiment of the present application.

[0168] As can be seen from Figure 7, 19 optical fibers are arranged in a three-layer ring. The innermost layer of the multi-core optical fiber 1052 includes 1 optical fiber, the middle layer of the multi-core optical fiber 1052 includes 6 optical fibers, and the outermost layer of the multi-core optical fiber includes 12 optical fibers. The distance between the innermost layer of the multi-core optical fiber 1052 and the middle layer of the multi-core optical fiber 1052 is 42 μm, and the distance between the outermost layer of the multi-core optical fiber 1052 and the middle layer of the multi-core optical fiber 1052 is 48 μm.

[0169] It can be understood that the description of the arrangement of the 19 optical fibers in the multi-core optical fiber 1052 here is only an example. In actual applications, there is no restriction on the specific number of optical fibers included in the multi-core optical fiber 1052, nor is there any restriction on the arrangement of the optical fibers in the multi-core optical fiber 1052.

[0170] Optionally, the combination of the aspheric lens 1011 and the microlens array 1012 here can also be any possible form of the lens module 101 described in Figure 3a above. There is no limitation here. In actual applications, it should be set in combination with specific application scenarios. The embodiment of the present application only uses the combination of the aspheric lens 1011 and the microlens array 1012 as an example for illustration and introduction.

[0171] Optionally, the distance between the light outlet of the multi-core optical fiber 1052 and the microlens array 1012 is L1. Since the transmission of N light beams in space follows the propagation law of Gaussian beams, the spot diameter D of the N light beams on the microlens array 1012 can be obtained by combining L1. N .

[0172] Furthermore, the microlens array 1012 includes N lenses, wherein the N lenses correspond one to one to the N optical fibers in the multi-core optical fiber 1052. The diameter of the microlens array 1012 composed of the N optical fibers is D. In order for the microlens array 1012 to fully transmit all the optical signals of the N light beams after they are emitted from the light outlets of the N optical fibers into the air, D is greater than D N .

[0173] It is understandable that the difference between D and D N The description of the size relationship of D is only an example. In actual application, D and D should be set according to the specific application scenario and specific usage requirements. N , there is no restriction here.

[0174] Optionally, the distance between the aspheric lens 1011 and the detection target surface of the photoelectric detection module 102 is L2, and the focal length of the aspheric lens 1011 is F. In order to ensure that the N light beams can be effectively focused onto the detection target surface of the photoelectric detection module 102, L2 and F should satisfy that L2 is less than or equal to F.

[0175] It is understandable that the description of the size relationship between L2 and F here is only an example. In actual applications, L2 and F should be set in combination with specific application scenarios and specific usage requirements, and no restrictions are made here.

[0176] In addition, since the N light beams are transmitted almost in parallel between the microlens array 1012 and the aspheric lens 1011 , there is no restriction on the distance between the lens array 1012 and the aspheric lens 1011 .

[0177] In order to more intuitively demonstrate the effect brought by the photoelectric conversion device shown in Figure 6, the effect of the photoelectric conversion device in uniforming the light field distribution of N light beams will be introduced below in combination with Figure 8. Figure 8 is a schematic diagram of another distribution of the light field of N light beams provided in an embodiment of the present application.

[0178] As can be seen from FIG8 , when a light beam is focused on the detection target surface of the photoelectric detection module 102, the light field of the light beam on the detection target surface of the photoelectric detection module 102 is shown in FIG8 . The light field distribution of the light beam follows the distribution of the Gaussian beam, and in the light field distribution of the light beam, the peak power density of the light field is 1.14e 4 W / cm 2 , wherein the light beam is a light beam obtained by incoherently combining N light beams through a wavelength division multiplexing device. Modeling and simulation of the device shown in FIG6 show that, in the device shown in FIG6 , the light field of the N light beams on the detection target surface of the photoelectric detection module 102 is shown in FIG8 , and in the light field distribution of the 19 light beams, the peak power density of the light field is 8.1e 3 W / cm 2 In addition, when the N light beams are incoherently combined and focused on the detection target surface of the photoelectric detection module 102, the spot diameter of the light beam is ±110μm; and when the 19 light beams are focused on the detection target surface of the photoelectric detection module 102, the total spot diameter of the 19 light beams is ±90μm.

[0179] In an embodiment of the present application, based on the above simulation results, in the photoelectric conversion device shown in Figure 6, for the situation where photoelectric conversion of multiple light beams is required, first, the detection of a combined light beam is changed to the parallel detection of N light beams. Secondly, by adjusting the distance between the multi-core optical fiber 1052 and the microlens array 1012 and the distance between the aspheric lens 1011 and the photoelectric detection module 102, the peak power density of the light field is reduced by 29%, effectively improving the threshold of the detection target surface of the photoelectric detection module 102 for receiving energy; and the spot diameter of the light beam is reduced by 18%, so that under the same area, the diameter of the detection target surface of the photoelectric detection module 102 can be further reduced in the photoelectric conversion device, which provides the possibility of miniaturization and high frequency of the solution.

[0180] The above describes the possible structure and working mode of the photoelectric conversion device when N light beams are incoherent light and N is 19. If the N light beams are coherent light, adjacent light beams will affect each other near the detection target surface of the photoelectric conversion module 102, resulting in coherent synthesis fluctuations. Therefore, when the N light beams are coherent light, a certain distance should be maintained between adjacent light beams to avoid coherent synthesis fluctuations of adjacent light beams.

[0181] The following describes the possible structure and working mode of the photoelectric conversion device when N light beams are coherent light and N is 19:

[0182] Please refer to FIG. 9 , which is another schematic structural diagram of a photoelectric conversion device provided in an embodiment of the present application.

[0183] The photoelectric conversion device includes a microlens array 1012 , an aspheric lens 1011 , a reflector 1013 , a photoelectric detection module 102 and a multi-core optical fiber 1052 .

[0184] N light sources 104 are connected to the multi-core optical fiber 1052 via N optical fibers 103 to emit N light beams, where N is an integer greater than or equal to 2.

[0185] The multi-core optical fiber 1052 is connected to the microlens array 1012 through an optical path, and is used to fix the N optical fibers 103 and output N light beams from the light outlet of the multi-core optical fiber 1052 .

[0186] The microlens array 1012 is connected to the aspheric lens 1011 through an optical path, and is used to change the transmission paths of the N light beams.

[0187] The aspheric lens 1011 is connected to the photoelectric detection module 102 through an optical path. The aspheric lens can change the transmission path of light by using the characteristic of the aspheric lens to change the transmission path of N light beams, so that the N light beams are focused onto the detection target surface of the photoelectric detection module 102.

[0188] Optionally, a reflector 1013 can be set between the aspheric lens 1011 and the photoelectric detection module 102. The aspheric lens 1011 and the reflector 1013 are connected via an optical path, and the reflector 1013 and the photoelectric detection module 102 are connected via an optical path, so as to change the direction of the N light beams emitted by the aspheric lens 1011.

[0189] The photoelectric detection module 102 is used to perform photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module 102 .

[0190] For ease of understanding, the transmission path of N light beams is introduced below: in the photoelectric conversion device shown in Figure 6, after N light sources 104 emit N light beams, the N light beams enter the N optical fibers 103 from the light inlets of the N optical fibers 103 and are transmitted in the N optical fibers 103. When the N light beams are transmitted from the light outlet of the multi-core optical fiber 1052, according to the propagation rules of light in the air, they propagate along the light path to the microlens array 1012. After the transmission paths of the N light beams are changed by the microlens array 1012, they are transmitted along the light path to the aspheric lens 1011. After the transmission paths of the N light beams are changed by the aspheric lens 1011, they propagate along the light path to the reflector 1013. The reflector 1013 changes the propagation paths of the N light beams so that the N light beams are emitted from the reflector 1013 and then focused along the light path to the detection target surface of the photoelectric detection module 102. The photoelectric detection module 102 performs photoelectric conversion on the N light beams focused onto the detection target surface of the photoelectric detection module 102, converting the N light beams from optical signals into electrical signals for subsequent propagation and processing. The multi-core optical fiber 1052 secures the N optical fibers 103 and maintains the relative distance between any two of the N optical fibers.

[0191] Optionally, the multi-core optical fiber 1052 includes 19 optical fibers, and the arrangement of the 19 optical fibers is similar to that in FIG. 7 , which will not be described here. For details, please refer to the description of the multi-core optical fiber 1052 corresponding to FIG. 7 .

[0192] Optionally, the angle between the axis of the reflector 1013 and the axis of the aspheric lens 1011 is 45°. The description of the angle between the axis of the reflector 1013 and the axis of the aspheric lens 1011 here is only an example. In actual application, it should be set in combination with the specific usage scenario and is not limited here.

[0193] Optionally, the combination of the aspheric lens 1011 and the reflector 1013 here can also be any possible form of the lens module 101 described in the aforementioned Figure 3a. There is no limitation here. In actual applications, it should be set in combination with specific application scenarios. The embodiment of the present application only illustrates and introduces the combination of the aspheric lens 1011 and the reflector 1013 as an example.

[0194] Optionally, the distance between the light outlet of the multi-core optical fiber 1052 and the aspheric lens 1011 is L1. Since the transmission of N light beams in space follows the propagation law of Gaussian beams, the spot diameter D of the N light beams on the aspheric lens 1011 can be obtained by combining L1. N .

[0195] Furthermore, the diameter of the aspheric lens 1011 is D. In order for the aspheric lens 1011 to fully transmit all the optical signals of the N light beams after they are emitted from the light outlets of the N optical fibers into the air, D is greater than D N .

[0196] It is understandable that the difference between D and D N The description of the size relationship of D is only an example. In actual application, D and D should be set according to the specific application scenario and specific usage requirements. N , there is no restriction here.

[0197] Optionally, the distance between the aspheric lens 1011 and the detection target surface of the photoelectric detection module 102 is L2, and the focal length of the aspheric lens 1011 is F. In order to ensure that the N light beams can be effectively focused onto the detection target surface of the photoelectric detection module 102, L2 and F should satisfy that L2 is less than or equal to F.

[0198] When the photoelectric conversion device includes a reflector 1013, and the reflector 1013 is arranged between the aspheric lens 1011 and the photoelectric detection module 102, the distance between the aspheric lens 1011 and the reflector 1013 is l1, and the distance between the reflector and the photoelectric detection module is l2. The relationship between l1, l2 and L2 needs to satisfy: l1+l2=L2.

[0199] It is understandable that the description of the size relationship between L2 and F here is only an example. In actual applications, L2 and F should be set in combination with specific application scenarios and specific usage requirements, and no restrictions are made here.

[0200] In order to more intuitively demonstrate the effect brought by the photoelectric conversion device shown in Figure 9, the effect of the photoelectric conversion device in uniforming the light field distribution of N light beams will be introduced below in combination with Figure 10. Figure 10 is a schematic diagram of another distribution of the light field of N light beams provided in an embodiment of the present application.

[0201] As can be seen from FIG10, when a light beam is focused on the detection target surface of the photoelectric detection module 102, the light field of the light beam on the detection target surface of the photoelectric detection module 102 is shown in FIG10. The peak power density of the light field is 1.34e 5 W / cm 2 , wherein the light beam is a beam obtained by coherently combining N light beams. Modeling and simulation of the device shown in FIG9 show that in the device shown in FIG9 , the light field of the N light beams on the detection target surface of the photoelectric detection module 102 is shown in FIG10 , and in the light field distribution of the 19 light beams, the peak power density of the light field is 1.28e 5 W / cm 2 .

[0202] In an embodiment of the present application, based on the above simulation results, in the photoelectric conversion device shown in Figure 9, for the situation where photoelectric conversion of multiple light beams is required, first, the detection of a combined light beam is changed to the parallel detection of N light beams, and secondly, by adjusting the distance between the multi-core optical fiber 1052 and the aspheric lens 1011, the distance between the aspheric lens 1011 and the reflector 1013, and the distance between the reflector 1013 and the photoelectric detection module 102, the peak power density of the light field is reduced by 4%, which effectively improves the threshold value of the detection target surface of the photoelectric detection module 102 for receiving energy, so that under the same area, in the photoelectric conversion device, the diameter of the detection target surface of the photoelectric detection module 102 can be further reduced, which provides the possibility for miniaturization and high frequency of the solution.

[0203] The above describes the photoelectric conversion device provided in the embodiment of the present application. The following describes the method for controlling photoelectric conversion provided in the present application:

[0204] To facilitate understanding of the method for controlling photoelectric conversion, the specific application scenario of the method is first introduced. In one possible scenario, the method is applied to the optical signal transmission device shown in Figure 11. Figure 11 is another structural schematic diagram of the photoelectric conversion device provided in an embodiment of the present application.

[0205] The photoelectric conversion device includes: a control module, a first photoelectric conversion device and a second photoelectric conversion device.

[0206] The first photoelectric conversion device is similar to that in FIG9 , and will not be described here again. Please refer to the description of the photoelectric conversion device in FIG9 .

[0207] The second photoelectric conversion device is similar to that in FIG. 4 or FIG. 6 , and will not be described in detail here. FIG. 4 is used as an example for illustration. For the specific structure, please refer to the description of the photoelectric conversion device in FIG. 4 or FIG. 6 .

[0208] The control module is connected to the N light sources, the first photoelectric detection module and the second photoelectric detection module, wherein the first photoelectric detection module is included in the first photoelectric conversion device and the second photoelectric detection module is included in the second photoelectric conversion device.

[0209] Please refer to FIG. 12 , which is a schematic diagram of a photoelectric conversion method provided in an embodiment of the present application.

[0210] 1201. A control module obtains wavelengths of N light beams.

[0211] Based on the photoelectric conversion device shown in the aforementioned Figure 11, since the N light beams emitted by N light sources may be coherent light or incoherent light, when the N light beams are coherent light, in order to obtain a better photoelectric conversion effect, it is necessary to ensure that when the N light beams are focused on the target surface of the photoelectric detection module, the adjacent light beams in the N light beams have as little influence as possible; and when the N light beams are incoherent light, in order to obtain a more uniform light field, it is necessary to make the light fields of adjacent light beams in the N light beams partially overlap to form a uniform light field distribution when the N light beams are focused on the target surface of the photoelectric detection module.

[0212] Therefore, in order to achieve better results in a photoelectric conversion device, different structures are needed when the N light beams are coherent and when the N light beams are incoherent. To achieve this switching, a control module, as the control center of the photoelectric conversion device, comes in handy.

[0213] First, the control module obtains the wavelengths of N light beams.

[0214] Specifically, when the control module is connected to N light sources, the control module collects wavelengths of N light beams from the N light sources.

[0215] Optionally, when the control module is connected to the first photodetection module, the control module collects the wavelengths of N light beams from the first photodetection module. Exemplarily, in the photoelectric conversion device, in an initial state, N light sources are connected to the first photodetection module, and the control module collects the wavelengths of N light beams from the first photodetection module.

[0216] Optionally, when the control module is connected to the second photodetection module, the control module collects the wavelengths of N light beams from the second photodetection module. Exemplarily, in the photoelectric conversion device, in an initial state, N light sources are connected to the second photodetection module, and the control module collects the wavelengths of N light beams from the second photodetection module.

[0217] Optionally, when the control module is connected to the first photoelectric detection module and the second photoelectric detection module at the same time, the control module collects the wavelengths of N light beams from the first photoelectric detection module or the second photoelectric detection module according to the current light path.

[0218] It is understandable that the method for the control module to obtain N light beam wavelengths is only an example. In actual application, it should be set in combination with specific application scenarios and is not limited here.

[0219] 1202. The control module determines whether the N light beams are coherent light.

[0220] After acquiring the wavelengths of the N light beams, the control module determines whether the N light beams are coherent light.

[0221] If the N light beams are coherent light, execute step 1203 .

[0222] If the N light beams are incoherent light, execute step 1204 .

[0223] 1203. The control module sends a first signal to a first photoelectric conversion device;

[0224] If the N light beams are coherent light, the control module sends a first signal to the first photoelectric conversion device. The first signal instructs the first photoelectric conversion device to be connected to the light outlets of the N optical fibers through an optical path, thereby achieving the optical path maintaining the first photoelectric conversion device to process the N light beams emitted by the N light sources, or the optical path is switched to the first photoelectric conversion device to process the N light beams emitted by the N light sources.

[0225] 1204. The control module sends a second signal to a second photoelectric conversion device.

[0226] If the N light beams are incoherent light, the control module sends a second signal to the second photoelectric conversion device. The second signal instructs the second photoelectric conversion device to be connected to the light outlets of the N optical fibers through an optical path, thereby achieving the optical path maintaining the second photoelectric conversion device to process the N light beams emitted by the N light sources, or the optical path is switched to the second photoelectric conversion device to process the N light beams emitted by the N light sources.

[0227] In the embodiment of the present application, switching between the first photoelectric conversion device and the second photoelectric conversion device is achieved through a control module, without the need for human attention and judgment and execution of corresponding countermeasures based on the wavelengths of N light beams, thereby saving labor costs and improving the processing efficiency of the photoelectric conversion device.

[0228] In another possible photoelectric conversion device, to facilitate understanding of the method for controlling photoelectric conversion by the control module, a specific application scenario of the method is first introduced. In one possible scenario, the method is applied to the optical signal transmission device shown in Figure 13. Figure 13 is another structural schematic diagram of the photoelectric conversion device provided in an embodiment of the present application.

[0229] The photoelectric conversion device includes: a control module and a photoelectric conversion device.

[0230] The photoelectric conversion device is similar to that in FIG4 , FIG6 or FIG9 , and will not be described here. Please refer to the description of the photoelectric conversion device in FIG4 , FIG6 or FIG9 .

[0231] The control module is connected to the N light sources and the photoelectric detection module, wherein the photoelectric detection module is included in the photoelectric conversion device.

[0232] Please refer to FIG. 14 , which is another schematic diagram of a method for controlling photoelectric conversion provided in an embodiment of the present application.

[0233] 1401. A control module obtains wavelengths of N light beams.

[0234] Based on the photoelectric conversion device shown in the aforementioned Figure 13, since the N light beams emitted by N light sources may be coherent light or incoherent light, when the N light beams are coherent light, in order to obtain a better photoelectric conversion effect, it is necessary to ensure that when the N light beams are focused on the target surface of the photoelectric detection module, the adjacent light beams in the N light beams have as little influence as possible; and when the N light beams are incoherent light, in order to obtain a more uniform light field, it is necessary to ensure that when the N light beams are focused on the target surface of the photoelectric detection module, the adjacent light beams in the N light beams have as much influence as possible.

[0235] Therefore, in order to achieve better results in a photoelectric conversion device, different structures are needed when the N light beams are coherent and when the N light beams are incoherent. To achieve this switching, a control module, as the control center of the photoelectric conversion device, comes in handy.

[0236] First, the control module obtains the wavelengths of N light beams.

[0237] Specifically, when the control module is connected to N light sources, the control module collects wavelengths of N light beams from the N light sources.

[0238] Optionally, when the control module is connected to the photoelectric detection module, the control module collects wavelengths of N light beams from the photoelectric detection module.

[0239] It is understandable that the method for the control module to obtain N light beam wavelengths is only an example. In actual application, it should be set in combination with specific application scenarios and is not limited here.

[0240] 1402. The control module determines whether the N light beams are coherent light.

[0241] After acquiring the wavelengths of the N light beams, the control module determines whether the N light beams are coherent light.

[0242] If the N light beams are coherent light, execute step 1203 .

[0243] If the N light beams are incoherent light, execute step 1204 .

[0244] 1403. The control module sends a first signal to the photoelectric conversion device;

[0245] If the N light beams are coherent light, the control module sends a first signal, which indicates that L2 in the photoelectric conversion device is less than F, where L2 is the distance between the lens module and the detection target surface of the photoelectric detection module, and F is the focal length of the lens module.

[0246] 1404. The control module sends a second signal to the photoelectric conversion device.

[0247] If the N light beams are incoherent light, the control module sends a second signal to the photoelectric conversion device, where the second signal indicates that L2 is equal to F.

[0248] In the embodiment of the present application, the control module adjusts the distance between the lens module and the detection target surface of the photoelectric detection module in the device for photoelectric conversion. This allows timely adjustment of the photoelectric conversion device based on whether N light beams are coherent, eliminating the need for human attention to determine and execute corresponding countermeasures based on the wavelengths of the N light beams, thereby saving labor costs and improving the processing efficiency of the photoelectric conversion device.

[0249] The above describes the photoelectric conversion device and apparatus proposed in this application. The following describes the specific application scenarios of the solution proposed in this application with reference to the accompanying drawings:

[0250] Please refer to FIG. 15 , which is a schematic structural diagram of a control module provided in an embodiment of the present application.

[0251] An acquisition submodule 1501 is configured to acquire wavelengths of N light beams, where the N light beams are emitted by N light sources.

[0252] A determination submodule 1502 is configured to determine whether the N light beams are coherent light;

[0253] If the N light beams are coherent light, the sending submodule 1503 is configured to send a first signal to the first photoelectric conversion device, where the first signal instructs the first photoelectric conversion device to be connected to the light outlets of the N optical fibers through an optical path;

[0254] If the N light beams are incoherent light, the sending submodule 1503 is further configured to send a second signal to the second photoelectric conversion device, where the second signal indicates that the second photoelectric conversion device is optically connected to the light outlets of the N optical fibers.

[0255] It should be noted that FIG15 is only one possible implementation of the embodiment of the present application. In actual applications, the control module may also include more or fewer components, which is not limited here. For matters not shown or described in the embodiment of the present application, please refer to the description of the control module in the aforementioned FIG11 and FIG12, which will not be repeated here.

[0256] Please refer to Figure 16, which is a structural diagram of a network device provided in an embodiment of the present application.

[0257] The network device 1600 includes: a processor 1610 and a communication interface 1620. The processor 1610 and the communication interface 1620 can be connected to each other through an internal bus 1640, or can communicate through other means such as wireless transmission. The embodiment of the present application takes the connection through the bus 1640 as an example. The bus 1640 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus 1640 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in Figure 16, but it does not mean that there is only one bus or one type of bus.

[0258] Processor 1610 may be composed of at least one general-purpose processor, such as a central processing unit (CPU), or a combination of a CPU and a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof. Processor 1610 executes various types of instructions, such as instructions burned into the processor, or software or firmware programs stored in memory 1630, enabling network device 1600 to provide a variety of services.

[0259] Optionally, the memory 1630 is used to store program code and is controlled by the processor 1610 to execute the processing steps in the photoelectric conversion method in the above embodiment. The program code may include one or more software modules, which may be the software modules provided in Figure 15, such as an acquisition submodule, a judgment submodule, or a sending submodule. The acquisition submodule is used to obtain the wavelengths of N light beams, where the N light beams are light beams emitted by N light sources; the judgment submodule is used to determine whether the N light beams are coherent light; if the N light beams are coherent light, the sending submodule is used to send a first signal to the first photoelectric conversion device, the first signal indicating that the first photoelectric conversion device is connected to the light outlets of the N optical fibers through an optical path; if the N light beams are incoherent light, the sending submodule is used to send a second signal to the second photoelectric conversion device, the second signal indicating that the second photoelectric conversion device is connected to the light outlets of the N optical fibers through an optical path.

[0260] It should be noted that this embodiment can be implemented by a general physical server, for example, an ARM server or an X86 server, or it can be implemented by a virtual machine based on a general physical server combined with network function virtualization (NFV) technology. A virtual machine refers to a complete computer system with complete hardware system functions simulated by software and running in a completely isolated environment. This application does not make any specific limitations.

[0261] Optionally, the network device 1600 may further include a memory 1630. The memory 1630 may include a volatile memory (Volatile Memory), such as a random access memory (RAM); the memory 1630 may also include a non-volatile memory (Non-Volatile Memory), such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); and the memory 1630 may also include a combination of the above types. The memory 1630 may store program code to execute the actions performed by the control module in Figure 11 or Figure 12, which will not be described in detail here.

[0262] The communication interface 1620 can be a wired interface (such as an Ethernet interface), an internal interface (such as a high-speed serial computer expansion bus (Peripheral Component Interconnect express, PCIe) bus interface), a wired interface (such as an Ethernet interface) or a wireless interface (such as a cellular network interface or a wireless local area network interface) for communicating with other devices or modules.

[0263] It should be noted that FIG16 is only one possible implementation of the embodiment of the present application. In actual applications, the network device may also include more or fewer components, which is not limited here. For content not shown or described in the embodiment of the present application, please refer to the description of the control module in FIG11 or FIG12 above, which will not be repeated here.

[0264] Please refer to FIG. 17 , which is another structural diagram of the control module provided in an embodiment of the present application.

[0265] The control module includes:

[0266] An acquisition submodule 1701 is used to acquire the wavelengths of N light beams emitted by N light sources;

[0267] A determination submodule 1702 is configured to determine whether the N light beams are coherent light;

[0268] If the N light beams are coherent light, the sending submodule 1703 is configured to send a first signal, where the first signal indicates that L2 is less than F, where L2 is the distance between the lens module and the detection target surface of the photoelectric detection module, and F is the focal length of the lens module;

[0269] If the N light beams are incoherent light, the sending submodule 1703 is configured to send a second signal indicating that L2 is equal to F.

[0270] It should be noted that FIG17 is only one possible implementation of the embodiment of the present application. In actual applications, the control module may also include more or fewer components, which is not limited here. For matters not shown or described in the embodiment of the present application, please refer to the description of the control module in the aforementioned FIG13 and FIG14, which will not be repeated here.

[0271] Please refer to Figure 18, which is another structural diagram of the network device provided in an embodiment of the present application.

[0272] The network device 1800 includes: a processor 1810 and a communication interface 1820. The processor 1810 and the communication interface 1820 can be connected to each other through an internal bus 1840, or can communicate through other means such as wireless transmission. The embodiment of the present application takes the connection through the bus 1840 as an example. The bus 1840 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus 1840 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in Figure 18, but it does not mean that there is only one bus or one type of bus.

[0273] Processor 1810 may be composed of at least one general-purpose processor, such as a central processing unit (CPU), or a combination of a CPU and a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof. Processor 1810 executes various types of instructions, such as instructions burned into the processor, or software or firmware programs stored in memory 1830, enabling network device 1800 to provide a variety of services.

[0274] Optionally, the memory 1830 is used to store program code, and is controlled by the processor 1810 to execute the processing steps in the photoelectric conversion method in the above embodiment. The program code may include one or more software modules, which may be the software modules provided in Figure 17, such as an acquisition submodule, a judgment submodule, or a sending submodule. The acquisition submodule is used to obtain the wavelengths of N light beams emitted by N light sources; the judgment submodule is used to determine whether the N light beams are coherent light; if the N light beams are coherent light, the sending submodule is used to send a first signal, the first signal indicating that L2 is less than F, L2 is the distance between the lens module and the detection target surface of the photoelectric detection module, and F is the focal length of the lens module; if the N light beams are incoherent light, the sending submodule is used to send a second signal, the second signal indicating that L2 is equal to F.

[0275] It should be noted that this embodiment can be implemented by a general physical server, for example, an ARM server or an X86 server, or it can be implemented by a virtual machine based on a general physical server combined with NFV technology. A virtual machine refers to a complete computer system with complete hardware system functions simulated by software and running in a completely isolated environment. This application does not make any specific restrictions.

[0276] Optionally, the network device 1800 may further include a memory 1830. The memory 1830 may include a volatile memory (Volatile Memory), such as a random access memory (RAM); the memory 1830 may also include a non-volatile memory (Non-Volatile Memory), such as a read-only memory (ROM), a flash memory (Flash Memory), a hard disk drive (HDD), or a solid-state drive (SSD); the memory 1830 may also include a combination of the above types. The memory 1830 may store program code to execute the actions performed by the control module in Figure 13 or Figure 14, which will not be described in detail here.

[0277] The communication interface 1820 can be a wired interface (such as an Ethernet interface), an internal interface (such as a high-speed serial computer expansion bus (Peripheral Component Interconnect express, PCIe) bus interface), a wired interface (such as an Ethernet interface) or a wireless interface (such as a cellular network interface or a wireless local area network interface) for communicating with other devices or modules.

[0278] It should be noted that FIG18 is only one possible implementation of the embodiment of the present application. In actual applications, the network device may also include more or fewer components, which is not limited here. For content not shown or described in the embodiment of the present application, please refer to the description of the control module in FIG13 or FIG14 above, which will not be repeated here.

[0279] An embodiment of the present application also provides a computer-readable storage medium, including computer-readable instructions. When the computer-readable instructions are executed on a computer, the computer executes any one of the implementation methods shown in the aforementioned method embodiments.

[0280] An embodiment of the present application also provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are run on a computer, the computer executes any one of the implementation methods shown in the aforementioned method embodiments.

[0281] The present application also provides a chip or chip system, which may include a processor. The chip may also include a memory (or storage module) and / or a transceiver (or communication module), or the chip is coupled to a memory (or storage module) and / or a transceiver (or communication module), wherein the transceiver (or communication module) can be used to support the chip for wired and / or wireless communication, and the memory (or storage module) can be used to store a program or a set of instructions, and the processor calls the program or the set of instructions to implement the above-mentioned method embodiment, the operation performed by the terminal or network device in any possible implementation of the method embodiment. The chip system may include the above chip, and may also include the above chip and other discrete devices, such as memory (or storage module) and / or transceiver (or communication module).

[0282] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0283] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0284] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0285] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0286] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

Claims

1. A photoelectric conversion device, characterized in that: including a lens module and a photoelectric detection module; The lens module is connected to the photoelectric detection module through an optical path and to the light outlets of N optical fibers through an optical path, and is used to focus N light beams onto the detection target surface of the photoelectric detection module, wherein the N light beams correspond to N light sources, and the N light sources correspond to the light inlets of the N optical fibers, where N is an integer greater than or equal to 2; The photoelectric detection module is used to perform photoelectric conversion on the N light beams focused on the detection target surface of the photoelectric detection module.

2. The device according to claim 1, characterized in that The device also includes an optical fiber fixing module; The optical fiber fixing module is used to fix the N optical fibers.

3. The device according to claim 2, characterized in that The optical fiber fixing module is connected to the N optical fibers, is connected to the lens module via an optical path, and outputs the N light beams.

4. The device according to any one of claims 1 to 3, characterized in that The distance between the light outlets of the N optical fibers and the lens module is L1, and the spot diameter of the N light beams on the lens module is D N , the L1 and the D N The relationship between them follows the propagation law of Gaussian beam.

5. The device according to claim 4, characterized in that The diameter of the lens module is D, and D is larger than D N .

6. The device according to any one of claims 1 to 5, characterized in that The distance between the lens module and the detection target surface of the photoelectric detection module is L2, the focal length of the lens module is F, and L2 is less than or equal to F.

7. The device according to any one of claims 1 to 6, characterized in that The lens module includes an aspherical lens detector.

8. The device according to any one of claims 1 to 7, characterized in that The lens module further includes a microlens array, the microlenses of the microlens array corresponding one-to-one to the optical fibers of the optical fiber fixing module, and being used to focus the N light beams output by the optical fiber fixing module onto the detection target surface of the photoelectric detection module.

9. The device according to any one of claims 7 or 8, characterized in that The lens module further includes a reflector for changing the directions of the N light beams outputted by the optical fiber fixing module and refracting the light beams to the detection target surface of the photoelectric detection module.

10. The device according to any one of claims 1 to 9, characterized in that The optical fiber fixing module includes an optical fiber array or a multi-core optical fiber.

11. The device according to claim 10, characterized in that The multi-core optical fiber includes 19 optical fibers, which are arranged in three ring layers. The innermost layer of the multi-core optical fiber includes 1 optical fiber, the middle layer of the multi-core optical fiber includes 6 optical fibers, and the outermost layer of the multi-core optical fiber includes 12 optical fibers. The distance between the innermost layer of the multi-core optical fiber and the middle layer of the multi-core optical fiber is 42 μm, and the distance between the outermost layer of the multi-core optical fiber and the middle layer of the multi-core optical fiber is 48 μm.

12. The device according to claim 10, characterized in that The distance between adjacent optical fibers in the multi-core optical fiber is 42 μm.

13. The device according to claim 12, characterized in that The optical fiber array includes a linear optical fiber array or a two-dimensional optical fiber array.

14. The device according to claim 13, characterized in that The distance between adjacent optical fibers in the linear optical fiber array is 250 μm.

15. The device according to claim 13, characterized in that The distance between adjacent optical fibers in the two-dimensional optical fiber array is 250 μm.

16. A method for photoelectric conversion, characterized in that: A device for photoelectric conversion, the device comprising a control module, a first photoelectric conversion device, and a second photoelectric conversion device, wherein the method comprises: The control module obtains wavelengths of N light beams, where the N light beams are light beams emitted by N light sources; The control module determines whether the N light beams are coherent light; If the N light beams are coherent light, the control module sends a first signal to the first photoelectric conversion device, the first signal instructing the first photoelectric conversion device to be connected to the light outlets of the N optical fibers through an optical path; If the N light beams are incoherent light, the control module sends a second signal to the second photoelectric conversion device, where the second signal instructs the second photoelectric conversion device to be connected to the light outlets of the N optical fibers through an optical path.

17. The method according to claim 16, characterized in that The first photoelectric conversion device includes a first lens module, a first photoelectric detection module and a first optical fiber fixing module, wherein the first optical fiber fixing module is used to fix the N optical fibers; The first lens module is connected to the first photoelectric detection module through an optical path, and is used to focus the N light beams on the detection target surface of the first photoelectric detection module; The first photoelectric detection module is used to convert the N light beams collected by the detection target surface of the first photoelectric detection module into electrical signals.

18. The method according to claim 17, characterized in that The first optical fiber fixing module is connected to the N optical fibers, is connected to the first lens module via an optical path, and outputs the N light beams.

19. The method according to claim 17 or 18, characterized in that The distance between the light outlets of the N optical fibers and the first lens module is L1, and the spot diameter of the N light beams on the first lens module is D N , the L1 and the D N The relationship between them follows the propagation law of Gaussian beam.

20. The method according to claim 19, characterized in that The diameter of the first lens module is D, and D is larger than D N .

21. The method according to any one of claims 16 to 20, characterized in that The distance between the first lens module and the detection target surface of the first photoelectric detection module is L2, the focal length of the first lens module is F, and L2 is less than or equal to F.

22. The method according to any one of claims 16 to 21, characterized in that The first lens module includes a first aspherical lens.

23. The method according to any one of claims 16 to 22, characterized in that The first lens module also includes a first microlens array, the microlenses of the first microlens array correspond one-to-one to the optical fibers of the first optical fiber fixing module, and are used to focus the N light beams output by the first optical fiber fixing module onto the detection target surface of the first photoelectric detection module.

24. The method according to any one of claims 22 or 23, characterized in that The first lens module further includes a first reflector for changing the directions of the N light beams outputted by the first optical fiber fixing module and refracting them to the detection target surface of the first photoelectric detection module.

25. The method according to any one of claims 16 to 24, characterized in that The first optical fiber fixing module includes a first optical fiber array or a first multi-core optical fiber.

26. The method according to claim 25, characterized in that The distance between adjacent optical fibers in the first multi-core optical fiber is 42 μm.

27. The method according to claim 25, characterized in that The first optical fiber array includes a first linear optical fiber array or a first two-dimensional optical fiber array.

28. The method according to claim 27, characterized in that The distance between adjacent optical fibers in the first linear optical fiber array is 250 μm.

29. The method according to claim 27, characterized in that The distance between adjacent optical fibers in the first two-dimensional optical fiber array is 250 μm.

30. The method according to claim 16, wherein The second photoelectric conversion device includes a second lens module, a second photoelectric detection module and a second optical fiber fixing module, and the second optical fiber fixing module is used to fix the N optical fibers; The second lens module is connected to the second photoelectric detection module through an optical path, and is used to focus the N light beams on the detection target surface of the second photoelectric detection module; The second photoelectric detection module is used to convert the N light beams collected by the detection target surface of the second photoelectric detection module into electrical signals.

31. The method according to claim 30, characterized in that The second optical fiber fixing module is connected to the N optical fibers, is connected to the second lens module via an optical path, and outputs the N light beams.

32. The method according to claim 30 or 31, characterized in that The distance between the light outlets of the N optical fibers and the second lens module is L1, and the spot diameter of the N light beams on the second lens module is D N , the L1 and the D N The relationship between them follows the propagation law of Gaussian beam.

33. The method according to claim 32, characterized in that The diameter of the first lens module is D, and D is larger than D N .

34. The method according to any one of claims 16 or 30 to 33, characterized in that The distance between the second lens module and the detection target surface of the second photoelectric detection module is L2, the focal length of the second lens module is F, and L2 is less than or equal to F.

35. The method according to any one of claims 16 or 30 to 34, characterized in that The second lens module includes a first aspherical lens.

36. The method according to any one of claims 16 or 30 to 35, characterized in that The second lens module also includes a second microlens array, the microlenses of the second microlens array correspond one-to-one to the optical fibers of the second optical fiber fixing module, and are used to focus the N light beams output by the second optical fiber fixing module onto the detection target surface of the second photoelectric detection module.

37. The method according to any one of claims 35 or 36, characterized in that The second lens module further includes a second reflector for changing the directions of the N light beams outputted by the second optical fiber fixing module and refracting them to the detection target surface of the second photoelectric detection module.

38. The method according to any one of claims 16 or 30 to 37, characterized in that The second optical fiber fixing module includes a second optical fiber array or a second multi-core optical fiber.

39. The method according to claim 38, characterized in that The second multi-core optical fiber includes 19 optical fibers, and the 19 optical fibers are arranged in three circular layers. The innermost layer of the 19 optical fibers includes 1 optical fiber, the middle layer of the 19 optical fibers includes 6 optical fibers, and the outermost layer of the 19 optical fibers includes 12 optical fibers. The distance between the innermost layer of the 19 optical fibers and the middle layer of the 19 optical fibers is 42 μm, and the distance between the outermost layer of the 19 optical fibers and the middle layer of the 19 optical fibers is 48 μm.

40. A method for controlling photoelectric conversion, characterized in that: A device for photoelectric conversion, the device comprising a lens module and a photoelectric detection module, the lens module being optically connected to the photoelectric detection module and to the light outlets of N optical fibers, and configured to focus N light beams onto a detection target surface of the photoelectric detection module, the N light beams corresponding to N light sources, the light inlets of the N optical fibers corresponding to the N light sources, where N is an integer greater than or equal to 2; The photoelectric detection module is used to perform photoelectric conversion on the N light beams focused on the detection target surface of the photoelectric detection module, and the method includes: The control module obtains the wavelengths of N light beams emitted by N light sources; The control module determines whether the N light beams are coherent light; If the N light beams are coherent light, the control module sends a first signal, the first signal indicating that L2 is less than F, where L2 is the distance between the lens module and the detection target surface of the photoelectric detection module, and F is the focal length of the lens module; If the N light beams are incoherent light, the control module sends a second signal, where the second signal indicates that L2 is equal to F.

41. The method according to claim 40, wherein The device also includes an optical fiber fixing module; The optical fiber fixing module is used to fix the N optical fibers.

42. The method according to claim 41, wherein The optical fiber fixing module is connected to the N optical fibers, is connected to the lens module via an optical path, and outputs the N light beams.

43. The method according to any one of claims 40 to 42, characterized in that The distance between the light outlets of the N optical fibers and the lens module is L1, and the spot diameter of the N light beams on the lens module is D N , the L1 and the D N The relationship between them follows the propagation law of Gaussian beam.

44. The method according to claim 43, wherein The diameter of the lens module is D, and D is larger than D N .

45. The method according to any one of claims 40 to 44, characterized in that The lens module includes an aspherical lens.

46. ​​The method according to any one of claims 40 to 45, characterized in that The lens module further includes a microlens array, the microlenses of the microlens array corresponding one-to-one to the optical fibers of the optical fiber fixing module, and being used to focus the N light beams output by the optical fiber fixing module onto the detection target surface of the photoelectric detection module.

47. The method according to any one of claims 40 to 46, characterized in that The lens module further includes a reflector for changing the directions of the N light beams outputted by the optical fiber fixing module and refracting the light beams to the detection target surface of the photoelectric detection module.

48. The method according to any one of claims 40 to 47, characterized in that The optical fiber fixing module includes an optical fiber array or a multi-core optical fiber.

49. A network device, characterized in that A device comprising a photoelectric conversion device, a processor and a memory, wherein the memory is used to store instructions and the processor is used to execute the instructions. The device is the device according to any one of claims 1 to 15.

50. A network device, characterized in that: The method comprises a processor and a memory, wherein the memory is used to store instructions, and the processor is used to execute the instructions. When the processor executes the instructions, the method according to any one of claims 16 to 39 is performed.

51. A network device, characterized in that: The method comprises a processor and a memory, wherein the memory is used to store instructions, and the processor is used to execute the instructions. When the processor executes the instructions, the method according to any one of claims 40 to 48 is performed.

52. A computer-readable storage medium, characterized in that The invention comprises a program which, when run on a computer, causes the computer to execute the method according to any one of claims 16 to 39.

53. A computer-readable storage medium, characterized in that The invention comprises a program which, when run on a computer, causes the computer to perform the method according to any one of claims 40 to 48.

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