CN117220775B - Multipath laser communication device, system, method and electronic equipment - Google Patents
Multipath laser communication device, system, method and electronic equipment Download PDFInfo
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Abstract
A multipath laser communication device, a system, a method and electronic equipment relate to the technical field of space laser communication, and the system comprises: the controller comprises a liquid crystal spatial light modulator and at least two optical communication transceiver modules, wherein the optical communication transceiver modules are arranged opposite to the liquid crystal spatial light modulator and are used for enabling light beams to propagate between the optical communication transceiver modules and the liquid crystal spatial light modulator to realize communication; the optical communication receiving module is divided into an emitting group and a receiving group, wherein the emitting group is used for emitting light beams to the liquid crystal spatial light modulator, and the receiving group is used for receiving the light beams on the surface of the liquid crystal spatial light modulator; the device, the system and the method can realize one or more paths of light beams to be controlled simultaneously by adopting the liquid crystal spatial light modulator, are used for realizing networking more easily during laser communication, and greatly reduce the volume and the power consumption of the system due to adopting a non-mechanical control mode.
Description
Technical Field
The invention relates to the technical field of space laser communication.
Background
The laser communication system uses laser as information carrier, and the high coherence and spatial directionality of the laser determine that spatial laser communication has obvious advantages compared with RF communication in many aspects: the anti-interference capability is strong, the safety is good, the equipment volume is small, the weight is light, the frequency spectrum is not controlled, the power consumption is low, the system mobility is strong, the manufacturing cost is low, the transparent transmission protocol and the like, so that the anti-interference device has wide application prospect.
The networking laser communication is a method that one communication terminal communicates with a plurality of terminals at the same time or communicates with a plurality of terminals at the same time, can effectively solve the problem of communication relay, and especially can rapidly realize information downloading when a high orbit satellite is used as a relay satellite. The invention patent CN101873167a proposes a one-to-many optical communication method, which can realize space networking communication, but the parabolic antenna has limited reduction in system volume, and each path of optical signal needs to have a corresponding fast mirror mechanism, so that the system has larger volume and higher power consumption cost. In practical application, it is important to realize flexible communication among a plurality of terminals, and the method has a wide application value.
Therefore, how to provide a multi-path laser communication device with smaller system size and lower power consumption is a technical problem to be solved in the art.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multipath laser communication device, a system, a method and electronic equipment, wherein the device, the system and the method can realize one-path or multipath light beam simultaneous control by adopting a liquid crystal spatial light modulator, are used for laser communication, so that networking is easier to realize, and meanwhile, the volume and the power consumption of the system are greatly reduced by adopting a non-mechanical control mode.
Based on the same inventive concept, the invention provides the following technical scheme:
1. the multipath laser communication device comprises a liquid crystal spatial light modulator 2 and at least two optical communication transceiver modules, wherein the optical communication transceiver modules are arranged opposite to the liquid crystal spatial light modulator 2 and are used for enabling light beams to propagate between the optical communication transceiver modules and the liquid crystal spatial light modulator 2 to realize communication;
the optical communication receiving module is divided into a transmitting group for transmitting the light beam to the liquid crystal spatial light modulator 2 and a receiving group for receiving the light beam on the surface of the liquid crystal spatial light modulator 2.
Further, one optical communication transceiver module is used as a transmitting group, at least one optical communication transceiver module is used as a receiving group, the surface of the liquid crystal spatial light modulator 2 is divided into K parts, K is the number of the optical communication transceiver modules contained in the receiving group, and each part is correspondingly arranged with each optical communication transceiver module in the receiving group.
Further, the device is characterized in that M optical communication transceiver modules are used as a transmitting group, N optical communication transceiver modules are used as a receiving group, and M, N is not less than 2;
the surface of the liquid crystal spatial light modulator 2 is divided into M multiplied by N parts, M is the number of columns, the number of the M is equal to the number of the optical communication transceiver modules of the transmitting group, N is the number of the N, and the number of the N is equal to the number of the optical communication transceiver modules of the receiving group; each column corresponds to one optical communication transceiver module in the transmitting group, and N parts in one column respectively correspond to one optical communication transceiver module in the receiving group.
Further, the liquid crystal spatial light modulator 2 is a pure phase liquid crystal modulator of the model HDSLM64 RA.
2. The multi-path laser communication system comprises a controller 1 and the multi-path laser communication device according to the technical scheme 1, wherein the controller 1 is connected with a liquid crystal spatial light modulator 2, and the controller 1 is used for controlling the surface of the liquid crystal spatial light modulator 2 to be divided into a plurality of parts, controlling the optical communication transceiver modules of the transmitting group to irradiate the corresponding parts and controlling the corresponding part of surface light beams to be aligned with the optical communication transceiver modules of the receiving group.
3. A multipath laser communication method is realized based on a liquid crystal spatial light modulator 2 and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method comprises the following steps:
controlling one optical communication transceiver module in the transmitting group to irradiate the liquid crystal spatial light modulator 2;
and controlling the liquid crystal spatial light modulator 2 to align the laser light to any one optical communication transceiver module in the receiving group.
4. A multipath laser communication method is realized based on a liquid crystal spatial light modulator 2 and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method comprises the following steps:
controlling one optical communication transceiver module in the transmitting group to irradiate the liquid crystal spatial light modulator 2;
dividing the surface of the liquid crystal spatial light modulator 2 into a plurality of parts, wherein the number of the parts is the number of the optical communication transceiver modules of the receiving group;
and controlling the light beams on the surfaces of the parts of the liquid crystal spatial light modulator 2 to be aligned with the receiving group optical communication transceiver modules, wherein the parts are in one-to-one correspondence with the receiving group optical communication transceiver modules.
5. A multipath laser communication method is realized based on a liquid crystal spatial light modulator 2 and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method comprises the following steps:
dividing the surface of the liquid crystal spatial light modulator 2 into M multiplied by N parts, wherein M is the number of columns, the number of the M is equal to the number of the optical communication transceiver modules of the transmitting group, N is the number of the N, and the number of the N is equal to the number of the optical communication transceiver modules of the receiving group;
controlling M optical communication transceiver modules in the transmitting group to respectively irradiate one row of the liquid crystal spatial light modulator 2;
and controlling the light beams of the N partial surfaces contained in each column of the surface of the liquid crystal spatial light modulator 2 to align with the optical communication transceiver modules of the receiving group, wherein the N partial surfaces contained in each column are in one-to-one correspondence with the N optical communication transceiver modules in the receiving group.
6. A multipath laser communication method is realized based on a liquid crystal spatial light modulator 2 and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method comprises the following steps:
step 1: based on the method as described in claim 3, one-to-one communication is realized;
step 2: based on the method as described in claim 4, one-to-many communication is realized;
step 3: based on the method as described in claim 5, many-to-many communication is achieved.
7. An electronic device comprising a processor and a storage device, the storage device having a plurality of instructions stored therein, the processor being configured to read the plurality of instructions in the storage device and perform the method of claim 6.
The multipath laser communication device, the multipath laser communication system, the multipath laser communication method and the electronic equipment provided by the invention at least comprise the following beneficial effects:
the liquid crystal spatial light modulator is used as a beam direction adjusting device, so that the propagation direction of multiple beams of light can be changed simultaneously, the volume and the power consumption of the space optical communication system can be effectively reduced, and the rapid development of the space optical communication system is promoted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of one embodiment of a multi-path laser communication device according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a multi-to-many communication of a multi-path laser communication device according to the present invention;
reference numerals: 1-controller, 2-liquid crystal spatial light modulator, 21-first part, 22-second part, 23-third part, 24-fourth part, 3-first optical communication transceiver, 4-second optical communication transceiver, 5-third optical communication transceiver, 6-fourth optical communication transceiver.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The following description of the embodiments of the present application, taken in conjunction with the accompanying drawings, clearly and fully describes the technical solutions of the embodiments of the present application, and it is evident that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Embodiment one:
in some embodiments, a multi-path laser communication system is provided, which comprises a controller 1 and a multi-path laser communication device, wherein the multi-path laser communication device comprises a liquid crystal spatial light modulator 2 and four optical communication transceiver modules, the optical communication transceiver modules are arranged opposite to the liquid crystal spatial light modulator 2, and are used for enabling light beams to propagate between the optical communication transceiver modules and the liquid crystal spatial light modulator 2 to realize communication;
the optical communication receiving module is divided into a transmitting group for transmitting the light beam to the liquid crystal spatial light modulator 2 and a receiving group for receiving the light beam on the surface of the liquid crystal spatial light modulator 2.
The controller 1 is configured to control the surface of the lc spatial light modulator 2 to be divided into a plurality of parts, and control the optical communication transceiver module of the transmitting group to irradiate the corresponding part, and control the corresponding part of the surface light beam to be aligned to the optical communication transceiver module of the receiving group.
The controller 1, the liquid crystal spatial light modulator 2, the first optical communication transceiver 3, the second optical communication transceiver 4, the third optical communication transceiver 5, and the fourth optical communication transceiver 6 are arranged as shown in fig. 1. The controller 1 is connected to the liquid crystal spatial light modulator 2 by a cable.
(1) When one-to-one communication is realized, the first optical communication transmitter-receiver device 3 is selected as a transmission group, and any one of the second optical communication transmitter-receiver device 4, the third optical communication transmitter-receiver device 5, and the fourth optical communication transmitter-receiver device 6 is selected as a reception group. The first optical communication transceiver 3 is disposed corresponding to the surface of the liquid crystal spatial light modulator 2, and the selected receiving group is disposed corresponding to the surface of the liquid crystal spatial light modulator 2.
In operation, the first optical communication transceiver 3 emits laser light to irradiate the liquid crystal spatial light modulator 2, and the controller 1 controls the liquid crystal spatial light modulator 2 to align the laser light with the second optical communication transceiver 4, with the third optical communication transceiver 5, or with the fourth optical communication transceiver 6, so as to realize one-to-one communication.
(2) When a pair of communication is realized, one optical communication transceiver module is used as a transmitting group, two or more optical communication transceiver modules are optionally used as receiving groups, the surface of the liquid crystal spatial light modulator 2 is divided into 2 parts, the number of the liquid crystal spatial light modulator is the same as that of the optical communication transceiver modules contained in the receiving groups, and each part is correspondingly arranged with each optical communication transceiver module in the receiving groups.
Taking the example that the receiving group comprises the second optical communication transceiver 4 and the third optical communication transceiver 5. When the device works, the first optical communication transceiver 3 emits laser to irradiate the liquid crystal spatial light modulator 2, the controller 1 divides the surface of the liquid crystal spatial light modulator 2 into two parts, and simultaneously controls the first part of surface light beams to align with the second optical communication transceiver 4 and the second part of surface light beams to align with the third optical communication transceiver 5, so that one-to-two simultaneous communication is realized.
(3) When a pair of communications is realized, one optical communication transceiver module is used as a transmitting group, the other three optical communication transceiver modules are used as receiving groups, the surface of the liquid crystal spatial light modulator 2 is divided into 3 parts, the number of the liquid crystal spatial light modulator is the same as that of the optical communication transceiver modules contained in the receiving groups, and each part is correspondingly arranged with each optical communication transceiver module in the receiving groups.
When the device works, the first optical communication transceiver 3 emits laser to irradiate the liquid crystal spatial light modulator 2, the controller 1 divides the surface of the liquid crystal spatial light modulator 2 into three parts, and simultaneously controls the first part of surface light beams to align with the second optical communication transceiver 4, controls the second part of surface light beams to align with the third optical communication transceiver 5 and controls the third part of surface light beams to align with the fourth optical communication transceiver 6, so that one-to-three simultaneous communication is realized.
From the (2) th and (3) th aspects of the present embodiment, it can be known how to perform one-to-many communication using the system of the present embodiment. The method comprises the following steps: the surface of the liquid crystal spatial light modulator 2 is divided into K parts, wherein K is the number of the optical communication transceiver modules contained in the receiving group, and each part is correspondingly arranged with each optical communication transceiver module in the receiving group.
(4) Referring to fig. 2, when two pairs of communications are implemented, the first optical communication transceiver module 3 and the fourth optical communication transceiver module 6 are used as transmitting groups, the second optical communication transceiver module 4 and the third optical communication transceiver module 5 are used as receiving groups, the surface of the liquid crystal spatial light modulator 2 is divided into four parts, the first optical communication transceiver module 3 corresponds to a first part 21 and a second part 22, the fourth optical communication transceiver module 6 corresponds to a third part 23 and a fourth part 24, the first part 21 and the third part 23 correspond to the second optical communication transceiver module 4, and the second part 22 and the fourth part 24 correspond to the third optical communication transceiver module 5. Wherein the first portion 21, the second portion 22 are in a first column and the third portion 23, the fourth portion 24 are in a second column.
When the device works, the controller 1 divides the surface of the liquid crystal spatial light modulator 2 into four parts, the first optical communication transceiver 3 emits light beams to irradiate the first part of the surface, and the controller 1 controls the light beams irradiated to the surface of the liquid crystal spatial light modulator 2 to align with the second optical communication transceiver 4; the third optical communication transceiver system 5 emits light beams to irradiate a third part of the surface, and the controller 1 irradiates the third part of the surface of the liquid crystal spatial light modulator 2 to align with the fourth optical communication transceiver system 6, so that two-to-two simultaneous communication is realized.
According to the (4) th aspect of the present embodiment, the manner of one-to-many communication by the system of the present embodiment can be known. The method comprises the following steps: m optical communication transceiver modules are used as transmitting groups, N optical communication transceiver modules are used as receiving groups, and M, N is not less than 2; the surface of the liquid crystal spatial light modulator 2 is divided into M multiplied by N parts, M is the number of columns, the number of the M is equal to the number of the optical communication transceiver modules of the transmitting group, N is the number of the N, and the number of the N is equal to the number of the optical communication transceiver modules of the receiving group; each column corresponds to one optical communication transceiver module in the transmitting group, and N parts in one column respectively correspond to one optical communication transceiver module in the receiving group.
As a preferred embodiment, the liquid crystal spatial light modulator 2 is a pure phase liquid crystal modulator of the type HDSLM64 RA.
Embodiment two:
in some embodiments, a multi-path laser communication method is provided, which is used for realizing one-to-one communication, and is realized based on one liquid crystal spatial light modulator 2 and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method comprises the following steps:
s1, controlling one optical communication transceiver module in a transmitting group to irradiate a liquid crystal spatial light modulator 2;
and S2, controlling the liquid crystal spatial light modulator 2 to align the laser to any one optical communication transceiver module in the receiving group.
Specifically, the first optical communication transceiver 3 emits laser light to irradiate the liquid crystal spatial light modulator 2, and the controller 1 controls the liquid crystal spatial light modulator 2 to align the laser light with the second optical communication transceiver 4, with the third optical communication transceiver 5, or with the fourth optical communication transceiver 6, thereby realizing one-to-one communication.
Embodiment III:
in some embodiments, a multi-path laser communication method is provided, which is implemented based on a liquid crystal spatial light modulator 2 and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method includes the following steps:
s1, controlling one optical communication transceiver module in a transmitting group to irradiate a liquid crystal spatial light modulator 2;
s2, dividing the surface of the liquid crystal spatial light modulator 2 into a plurality of parts, wherein the number of the parts is the number of the receiving group optical communication transceiver modules;
s3, controlling the light beams on the surfaces of the parts of the liquid crystal spatial light modulator 2 to be aligned with the receiving group optical communication transceiver modules, wherein the parts are in one-to-one correspondence with the receiving group optical communication transceiver modules.
Specifically, when the receiving group includes two optical communication transceiver modules, the first optical communication transceiver 3 emits laser light to irradiate the liquid crystal spatial light modulator 2, and the controller 1 divides the surface of the liquid crystal spatial light modulator 2 into two parts, and simultaneously controls the first part of the surface light beam to align with the second optical communication transceiver 4, and controls the second part of the surface light beam to align with the third optical communication transceiver 5, so as to realize one-to-two simultaneous communication.
When the receiving group includes three optical communication transceiver modules, the first optical communication transceiver 3 emits laser light to irradiate the liquid crystal spatial light modulator 2, the controller 1 divides the surface of the liquid crystal spatial light modulator 2 into three parts, and simultaneously controls the first part of the surface light beam to align with the second optical communication transceiver 4, controls the second part of the surface light beam to align with the third optical communication transceiver 5, and controls the third part of the surface light beam to align with the fourth optical communication transceiver 6, so that one-to-three simultaneous communication is realized.
Embodiment four:
in some embodiments, a multi-path laser communication method is provided, which is implemented based on a liquid crystal spatial light modulator 2 and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method includes the following steps:
s1, dividing the surface of a liquid crystal spatial light modulator 2 into M multiplied by N parts, wherein M is the number of columns, the number of the M is equal to the number of optical communication transceiver modules of a transmitting group, and N is the number of the N and is equal to the number of the optical communication transceiver modules of a receiving group;
s2, controlling M optical communication transceiver modules in the transmitting group to respectively irradiate one row of the liquid crystal spatial light modulator 2;
s3, controlling the light beams of the N partial surfaces contained in each column of the surface of the liquid crystal spatial light modulator 2 to align with the optical communication transceiver modules of the receiving group, wherein the N partial surfaces contained in each column correspond to the N optical communication transceiver modules in the receiving group one by one.
Specifically, when m=2 and n=2, the controller 1 divides the surface of the liquid crystal spatial light modulator 2 into four parts, the first optical communication transceiver 3 emits a first part of the light beam irradiation surface, and the controller 1 controls the first part of the light beam irradiated to the surface of the liquid crystal spatial light modulator 2 to be aligned with the second optical communication transceiver 4; the third optical communication transceiver system 5 emits light beams to irradiate a third part of the surface, and the controller 1 irradiates the third part of the surface of the liquid crystal spatial light modulator 2 to align with the fourth optical communication transceiver system 6, so that two-to-two simultaneous communication is realized.
Fifth embodiment:
a multipath laser communication method is realized based on a liquid crystal spatial light modulator 2 and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method comprises the following steps:
step 1: for implementing one-to-one communication, comprising the steps of:
s11, controlling one optical communication transceiver module in the emission group to irradiate the liquid crystal spatial light modulator 2;
and S12, controlling the liquid crystal spatial light modulator 2 to align the laser to any one optical communication transceiver module in the receiving group.
Step 2: for implementing one-to-many communication, comprising the steps of:
s21, controlling one optical communication transceiver module in the emission group to irradiate the liquid crystal spatial light modulator 2;
s22, dividing the surface of the liquid crystal spatial light modulator 2 into a plurality of parts, wherein the number of the parts is the number of the receiving group optical communication transceiver modules;
s23, controlling the light beams on the surfaces of the parts of the liquid crystal spatial light modulator 2 to be aligned with the receiving group optical communication transceiver modules, wherein the parts are in one-to-one correspondence with the receiving group optical communication transceiver modules.
Step 3: for enabling many-to-many communication, comprising the steps of:
s1, dividing the surface of a liquid crystal spatial light modulator 2 into M multiplied by N parts, wherein M is the number of columns, the number of the M is equal to the number of optical communication transceiver modules of a transmitting group, and N is the number of the N and is equal to the number of the optical communication transceiver modules of a receiving group;
s2, controlling M optical communication transceiver modules in the transmitting group to respectively irradiate one row of the liquid crystal spatial light modulator 2;
s3, controlling the light beams of the N partial surfaces contained in each column of the surface of the liquid crystal spatial light modulator 2 to align with the optical communication transceiver modules of the receiving group, wherein the N partial surfaces contained in each column correspond to the N optical communication transceiver modules in the receiving group one by one.
Example six:
in some embodiments, an electronic device is provided, including a processor and a storage device, where the storage device has a plurality of instructions stored therein, and the processor is configured to read the plurality of instructions in the storage device and perform the method of the fifth embodiment.
It should be appreciated that in embodiments of the present application, the processor may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may include read-only memory, flash memory, and random access memory, and provides instructions and data to the processor. Some or all of the memory may also include non-volatile random access memory.
It should be appreciated that the above-described integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer-readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by instructing related hardware by a computer program, where the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of each method embodiment described above when executed by a processor. The computer program comprises computer program code, and the computer program code can be in a source code form, an object code form, an executable file or some intermediate form and the like. The computer readable medium may include: any entity or device capable of carrying the computer program code described above, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. The content of the computer readable storage medium can be appropriately increased or decreased according to the requirements of the legislation and the patent practice in the jurisdiction.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/device embodiments described above are merely illustrative, e.g., the division of modules or elements described above is merely a logical functional division, and may be implemented in other ways, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (6)
1. The multipath laser communication device is characterized by comprising a liquid crystal spatial light modulator (2) and at least two optical communication transceiver modules, wherein the optical communication transceiver modules are arranged opposite to the liquid crystal spatial light modulator (2) and are used for enabling light beams to propagate between the optical communication transceiver modules and the liquid crystal spatial light modulator (2) to realize communication;
the optical communication receiving module is divided into a transmitting group and a receiving group, wherein the transmitting group is used for transmitting light beams to the liquid crystal spatial light modulator (2), and the receiving group is used for receiving the light beams on the surface of the liquid crystal spatial light modulator (2);
m optical communication transceiver modules are used as transmitting groups, N optical communication transceiver modules are used as receiving groups, and M, N is not less than 2;
the surface of the liquid crystal spatial light modulator (2) is divided into M multiplied by N parts, M is the number of columns, the number of the M is equal to the number of the optical communication transceiver modules of the transmitting group, N is the number of the N, and the number of the N is equal to the number of the optical communication transceiver modules of the receiving group; each column corresponds to one optical communication transceiver module in the transmitting group, and N parts in one column respectively correspond to one optical communication transceiver module in the receiving group.
2. The multiple laser communication device according to claim 1, characterized in that the liquid crystal spatial light modulator (2) is a phase-only liquid crystal modulator of the HDSLM64RA type.
3. A multiple laser communication system, comprising a controller (1) and a multiple laser communication device according to any one of claims 1-2, wherein the controller (1) is connected to a liquid crystal spatial light modulator (2), and the controller (1) is configured to control the surface of the liquid crystal spatial light modulator (2) to be divided into a plurality of parts, and control the optical communication transceiver module of the transmitting group to irradiate the corresponding part, and control the corresponding part of the surface light beam to be aligned to the optical communication transceiver module of the receiving group.
4. The multipath laser communication method is realized based on a liquid crystal spatial light modulator (2) and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method is characterized by comprising the following steps:
dividing the surface of a liquid crystal spatial light modulator (2) into M multiplied by N parts, wherein M is the number of columns, the number of the M is equal to the number of the optical communication transceiver modules of the transmitting group, and N is the number of the N and the number of the optical communication transceiver modules of the receiving group;
controlling M optical communication transceiver modules in the transmitting group to respectively irradiate one row of the liquid crystal spatial light modulator (2);
and controlling the light beams of the N partial surfaces contained in each column of the surface of the liquid crystal spatial light modulator (2) to align with the optical communication transceiver modules of the receiving group, wherein the N partial surfaces contained in each column are in one-to-one correspondence with the N optical communication transceiver modules in the receiving group.
5. The multipath laser communication method is realized based on a liquid crystal spatial light modulator (2) and a plurality of optical communication transceiver modules, wherein the optical communication transceiver modules are divided into a transmitting group and a receiving group, and the method is characterized by comprising the following steps:
step 1: controlling one optical communication transceiver module in the transmitting group to irradiate the liquid crystal spatial light modulator (2);
controlling the liquid crystal spatial light modulator (2) to align the laser to any one optical communication transceiver module in the receiving group;
step 2: controlling one optical communication transceiver module in the transmitting group to irradiate the liquid crystal spatial light modulator (2);
dividing the surface of the liquid crystal spatial light modulator (2) into a plurality of parts, wherein the number of the parts is the number of the receiving group optical communication transceiver modules;
controlling the light beams on the surfaces of the parts of the liquid crystal spatial light modulator (2) to be aligned with the receiving group optical communication transceiver modules, wherein the parts are in one-to-one correspondence with the receiving group optical communication transceiver modules;
step 3: based on the method of claim 4, a many-to-many communication is achieved.
6. An electronic device comprising a processor and a memory device, wherein the memory device has a plurality of instructions stored therein, the processor being configured to read the plurality of instructions in the memory device and perform the method of claim 5.
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