Transmit-receive isolation device and laser communication transmit-receive isolation system

Abstract

The invention discloses a transmit-receive isolation device and a laser communication transmit-receive isolation system, and relates to the technical field of inter-satellite laser communication, the transmit-receive isolation device comprises a transmit-receive module, a communication detection module, a filtering module, a detection module and a control module, the transmit-receive module is used for receiving remote light and outputting the remote light as a remote light signal; the communication detection module is used for receiving a remote optical signal; the filtering module is connected between the communication detection module and the transceiving module, the filtering wavelength of the filtering module can be adjusted, and the filtering module is used for selectively transmitting optical signals with specific wavelengths; the detection module is used for detecting the wavelength of the remote optical signal; the control module is respectively connected with the filtering module and the detection module; the control module is used for controlling the filtering wavelength of the filtering module to be equal to the wavelength of the remote optical signal according to the detection result of the detection module, so that the filtering module selectively filters the remote optical signal; according to the technical scheme, the compatibility of the laser communication transceiving isolation system can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of inter-satellite laser communication, and in particular to a transceiver isolation device and a laser communication transceiver isolation system. Background Art

[0002] In the traditional field of laser communication, after receiving remote light, the transceiver isolation device usually uses a filter to transmit a laser of a specific wavelength to ensure the isolation of the transceiver isolation device, so as to isolate the local optical signal in the transceiver isolation device while transmitting the remote optical signal, and prevent the local light from affecting the detection, reception and processing of the remote optical signal. In this setting, since the filter wavelength of the filter in the transceiver isolation device is fixed, the wavelength range of the remote optical signal that can be adapted to filter is relatively single. When the wavelength of the remote optical signal changes, the original filter cannot meet the requirements of matching the remote optical signal after the wavelength change, which makes the application scenario of the transceiver isolation device easily limited. Summary of the invention

[0003] The main purpose of the present invention is to propose a transceiver isolation device and a laser communication transceiver isolation system, aiming to improve the compatibility of the laser communication transceiver isolation system.

[0004] To achieve the above object, the transmitting and receiving isolation device proposed in the present invention comprises: A transceiver module, used for receiving remote light emitted by an external device and outputting the remote light as a remote optical signal; A communication detection module, used for receiving the remote optical signal; A filter module, connected between the communication detection module and the transceiver module, wherein the filter wavelength of the filter module can be adjusted and set to selectively transmit optical signals of a specific wavelength; A detection module, used to detect the wavelength of the remote optical signal; A control module, connected to the filtering module and the detection module respectively; The control module is used to control the filtering wavelength of the filtering module to be equal to the wavelength of the remote optical signal according to the detection result of the detection module, so that the filtering module selectively filters the remote optical signal.

[0005] In one embodiment, the transceiver isolation device further includes a beam splitting module, which is disposed downstream of the transceiver module and is optically connected to the transceiver module, and is used to split the remote optical signal output by the transceiver module into a first optical signal and a second optical signal; The filtering module and the communication detection module are both arranged on the transmission path of the first optical signal, and are arranged in sequence along the transmission direction of the first optical signal to transmit and receive the first optical signal respectively; The detection module is arranged on the transmission path of the second optical signal to detect the wavelength of the second optical signal.

[0006] In one embodiment, the detection module includes: a frequency sweeping unit, configured to output a frequency sweeping signal within a specific frequency band, wherein the wavelength of the second optical signal is within the specific frequency band; a beam combining unit, disposed downstream of the beam splitting module and optically connected to the beam splitting module and the frequency sweeping unit, respectively, for receiving the second optical signal and the frequency sweeping signal, so that the frequency sweeping signal and the remote optical signal are combined to form a detection optical signal; and a detection unit, disposed downstream of the beam combining unit and in optical communication with the beam combining unit, the detection unit being used to receive the detection light signal to detect whether the detection light signal is at an energy peak; When the detection optical signal is at an energy peak, the wavelength of the frequency sweep signal is equal to the wavelength of the remote optical signal.

[0007] In one embodiment, the detection unit is configured as a photodetector, and the photodetector is optically connected to the beam combining unit; And / or, the frequency sweeping unit is configured as a frequency sweeping laser, and the frequency sweeping laser is connected to the beam combining unit via an optical fiber.

[0008] In one embodiment, the detection module is configured as a spectrometer.

[0009] In one embodiment, the transceiver module includes: a circulator, the circulator includes at least a first port, a second port and a third port, the first port is optically connected to the second port, and the second port is optically connected to the third port; a local laser, disposed at the first port, for outputting a local optical signal toward the first port, so that the local optical signal is unidirectionally transmitted from the first port to the second port; and An array element antenna is arranged at the second port, and is used to receive a local optical signal output by the second port and transmit it to the outside. The array element antenna is also used to receive remote light emitted by an external device to output the remote optical signal toward the second port, so that the remote optical signal is transmitted unidirectionally from the second port to the third port.

[0010] In one embodiment, the transceiver module further includes a coupling optical fiber, and the coupling optical fiber is connected between the second port and the array element antenna.

[0011] In one embodiment, the filtering module includes an input end and an output end, the input end is connected to the third port by optical fiber, and the output end is connected to the communication detection module by optical fiber.

[0012] In one embodiment, the filtering module includes a plurality of optical fiber filters, and the plurality of optical fiber filters are sequentially arranged and connected from the third port toward the communication detection system.

[0013] The present invention further provides a laser communication transceiver isolation system, comprising any one of the transceiver isolation devices described above, wherein the transceiver isolation device comprises: A transceiver module, used for receiving remote light emitted by an external device and outputting the remote light as a remote optical signal; A communication detection module, used for receiving the remote optical signal; A filter module, connected between the communication detection module and the transceiver module, wherein the filter wavelength of the filter module can be adjusted and set to selectively transmit optical signals of a specific wavelength; A detection module, used to detect the wavelength of the remote optical signal; A control module, connected to the filtering module and the detection module respectively; The control module is used to control the filtering wavelength of the filtering module to be equal to the wavelength of the remote optical signal according to the detection result of the detection module, so that the filtering module selectively filters the remote optical signal.

[0014] The transceiver isolation device of the technical solution of the present invention includes a transceiver module, a communication detection module, a filter module, a detection module and a control module, wherein the transceiver isolation device can realize the receiving function of remote light through the transceiver module, so that the remote light is coupled into a remote optical signal and then enters the transceiver isolation device; the filter module and the communication detection module are sequentially arranged along the transmission path of at least part of the remote optical signal, and the filter module can selectively transmit optical signals of specific wavelengths, and the wavelength range that can be transmitted can be adjusted. Specifically, the detection module can detect the wavelength of the remote optical signal, and the control module is connected to the filter module and the detection module respectively. In this way, the filtering wavelength of the filter module can be controlled to be equal to the wavelength of the remote optical signal according to the real-time detection result of the detection module, thereby realizing adaptive filtering of remote optical signals of different wavelengths, thereby realizing automatic matching of the transceiver isolation device with remote optical signals of different wavelengths, and improving the compatibility of the laser communication transceiver isolation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 A schematic structural diagram of an embodiment of a transceiver isolation device provided by the present invention; Description of Figure Numbers: 100. Transceiver isolation device; 10. Transceiver module; 11. Circulator; 12. Local laser; 13. Array element antenna; 14. Coupling optical fiber; 20. Communication detection module; 30. Filter module; 40. Detection module; 41. Frequency scanning unit; 42. Beam combining unit; 43. Detection unit; 50. Control module; 60. Beam splitting module.

[0017] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] In the traditional field of laser communication, after receiving remote light, the transceiver isolation device usually uses a filter to transmit a laser of a specific wavelength to ensure the isolation of the transceiver isolation device, so as to isolate the local optical signal in the transceiver isolation device while transmitting the remote optical signal, and prevent the local light from affecting the detection, reception and processing of the remote optical signal. In this setting, since the filter wavelength of the filter in the transceiver isolation device is fixed, the wavelength range of the remote optical signal that can be adapted to filter is relatively single. When the wavelength of the remote optical signal changes, the original filter cannot meet the requirements of matching the remote optical signal after the wavelength change, which makes the application scenario of the transceiver isolation device easily limited.

[0022] The present invention provides a transceiver isolation device 100 .

[0023] See also Figure 1 In one embodiment of the present invention, the transceiver isolation device 100 includes: The transceiver module 10 is used to receive remote light emitted by an external device and output the remote light as a remote optical signal; A communication detection module 20, configured to receive the remote optical signal; A filter module 30, connected between the communication detection module 20 and the transceiver module 10, wherein the filter wavelength of the filter module 30 can be adjusted and set to selectively transmit optical signals of a specific wavelength; A detection module 40, configured to detect the wavelength of the remote optical signal; A control module 50, connected to the filter module 30 and the detection module 40 respectively; The control module 50 is used to control the filtering wavelength of the filtering module 30 to be equal to the wavelength of the remote optical signal according to the detection result of the detection module 40, so that the filtering module 30 selectively filters the remote optical signal.

[0024] It can be understood that the transceiver isolation device 100 of the technical solution of the present invention includes a transceiver module 10, a communication detection module 20, a filter module 30, a detection module 40 and a control module 50, wherein the transceiver isolation device 100 can realize the remote light receiving function through the transceiver module 10, so that the remote light is coupled to the remote light signal and enters the transceiver isolation device 100; the filter module 30 and the communication detection module 20 are arranged in sequence along the transmission path of at least part of the remote light signal, and the filter module 30 can selectively transmit the light signal of a specific wavelength, and the wavelength range that can be transmitted can be adjusted. Specifically, the detection module 40 can detect the wavelength of the remote light signal, and the control module 50 is connected to the filter module 30 and the detection module 40 respectively. In this way, according to the real-time detection result of the detection module 40, the filtering wavelength of the filter module 30 can be controlled to be equal to the wavelength of the remote light signal, thereby realizing adaptive filtering of remote light signals of different wavelengths, thereby realizing the automatic matching of the transceiver isolation device 100 with remote light signals of different wavelengths, and improving the compatibility of the laser communication transceiver isolation system.

[0025] See also Figure 1 In an embodiment of the present invention, the transceiver isolation device 100 further includes a beam splitting module 60, which is disposed downstream of the transceiver module 10 and is optically connected to the transceiver module 10, and is used to split the remote optical signal output by the transceiver module 10 into a first optical signal and a second optical signal; The filtering module 30 and the communication detection module 20 are both arranged on the transmission path of the first optical signal, and are sequentially arranged along the transmission direction of the first optical signal to transmit and receive the first optical signal respectively; The detection module 40 is disposed on a transmission path of the second optical signal to detect a wavelength of the second optical signal.

[0026] In some embodiments, the beam splitter module 60 is configured as a beam splitter, which includes a first input end, a first output end, and a second output end, wherein the optical path between the first input end and the transceiver module 10 is connected so that the optical signal output by the transceiver module 10 can enter the beam splitter through the first input end, and be split into a first optical signal and a second optical signal by the beam splitter, thereby allowing the first optical signal and the second optical signal to be output through the first output end and the second output end, respectively.

[0027] It should be noted that the beam splitter module 60 can split the remote optical signal in a specific ratio. In some embodiments, the beam splitter is a 9:1 beam splitter, and nine-tenths of the remote optical signal entering the beam splitter is output through the first output end to form a first optical signal, and one-tenth of the remote optical signal entering the beam splitter is output through the second output end to form a second optical signal. The wavelengths of the first optical signal and the second optical signal are the same as the wavelength of the remote optical signal. Of course, the beam splitter module 60 can also be a beam splitter of other ratios, which is not limited here.

[0028] Furthermore, the filtering module 30 and the communication detection module 20 are sequentially arranged downstream of the first output end, and are used to sequentially transmit and receive the first optical signal outputted from the first output end. The detection module 40 is arranged downstream of the second output end, and is used to detect the wavelength of the second optical signal, thereby obtaining the wavelength of the remote optical signal.

[0029] It can be understood that the technical solution of the present invention splits the remote optical signal in a specific ratio through the splitting module 60, and can respectively realize the filtering and receiving function and the wavelength detection function of the remote optical signal through two optical paths to ensure that the filtering and receiving function and the wavelength detection function of the remote optical signal can be carried out normally, so as to realize adaptive filtering of the remote optical signal based on the wavelength detection function, so that the transceiver isolation device 100 is suitable for receiving and isolating remote optical signals of different wavelengths.

[0030] See also Figure 1 , in an embodiment of the present invention, the detection module 40 includes: a frequency sweep unit 41, configured to output a frequency sweep signal within a specific frequency band, the wavelength of the second optical signal being within the specific frequency band; a beam combining unit 42, which is disposed downstream of the beam splitting module 60 and is optically connected to the beam splitting module 60 and the frequency sweeping unit 41, respectively, and is used to receive the second optical signal and the frequency sweeping signal, respectively, so that the frequency sweeping signal and the remote optical signal are combined to form a detection optical signal; and A detection unit 43 is disposed downstream of the beam combining unit 42 and is optically connected to the beam combining unit 42. The detection unit 43 is used to receive the detection light signal to detect whether the detection light signal is at an energy peak. When the detection optical signal is at an energy peak, the wavelength of the frequency sweep signal is equal to the wavelength of the remote optical signal.

[0031] The wavelength of the frequency sweep signal is set to fluctuate periodically within a specific frequency band, and the wavelength of the second optical signal is within the specific frequency band. By setting it in this way, the wavelength of the frequency sweep signal at a certain moment can be equal to the wavelength of the second optical signal, and specifically, the wavelength of the frequency sweep signal and the wavelength of the second optical signal can be made to have the same value or to be similarly set within a certain range.

[0032] It should be noted that the frequency sweeping signal and the second optical signal can enter the beam combining unit 42 together, and be mixed in the beam combining unit 42 to achieve coherent amplification of the optical signal, and output a detection optical signal for detection by the detection unit 43. Among them, the detection unit 43 can obtain the light intensity energy of the detection optical signal. When the wavelengths of the frequency sweeping signal and the second optical signal provided by the frequency sweeping unit 41 are equal, the detection optical signal obtained by mixing the frequency sweeping signal and the second optical signal is at an energy peak. That is, when there is an energy peak in the energy spectrum of the detection unit 43, it can be determined that the wavelength of the frequency sweeping signal at that moment is equal to the second optical signal, that is, the wavelength of the frequency sweeping signal at that moment is equal to the wavelength of the remote optical signal.

[0033] In some embodiments, the control module 50 is electrically connected to the detection unit 43 and the sweeping unit 41 respectively to obtain a wavelength value corresponding to the sweeping signal when there is an energy peak in the energy spectrum of the detection unit 43, thereby realizing wavelength detection of the remote optical signal.

[0034] See also Figure 1 In an embodiment of the present invention, the detection unit 43 is configured as a photoelectric detector, and the photoelectric detector is optically connected to the beam combining unit 42; And / or, the frequency sweeping unit 41 is configured as a frequency sweeping laser, and the frequency sweeping laser is connected to the beam combining unit 42 via an optical fiber.

[0035] Among them, by connecting the photodetector, the sweeping laser and the beam combining unit 42 with optical fibers, each component in the detection module 40 can be configured as an optical fiber device; compared with setting the detection unit 43, the sweeping unit 41, etc. as spatial light devices, the various components of the detection module 40 of this embodiment are not restricted by the optical path arrangement of the spatial light during assembly, thereby facilitating the assembly of the detection module 40 and helping to improve the compactness of the structure.

[0036] See also Figure 1 In an embodiment of the present invention, the detection module 40 is configured as a spectrometer.

[0037] With this arrangement, the wavelength value of the second optical signal can be directly detected by the spectrometer, so that the control module 50 can control the filtering wavelength of the filtering module 30 to be equal to the wavelength of the remote optical signal according to the wavelength detection result of the spectrometer, so that the filtering module 30 selectively filters the remote optical signal.

[0038] See also Figure 1 In an embodiment of the present invention, the transceiver module 10 includes: a circulator 11, the circulator 11 includes at least a first port, a second port and a third port, the first port is optically connected to the second port, and the second port is optically connected to the third port; a local laser 12, disposed at the first port, for outputting a local optical signal toward the first port, so that the local optical signal is unidirectionally transmitted from the first port to the second port; and An array element antenna 13 is provided at the second port, and is used to receive a local optical signal outputted from the second port and transmit it to the outside. The array element antenna 13 is also used to receive remote light emitted by an external device to output the remote optical signal toward the second port, so that the remote optical signal is transmitted unidirectionally from the second port to the third port.

[0039] Among them, the local laser 12 and the first port of the circulator 11 are arranged relative to each other, and are used to emit local light to the first port of the circulator 11, so that the local optical signal can be transmitted unidirectionally from the first port to the second port, and perform a fiber-space optical coupling through the second port array element antenna 13, so that the local optical signal is coupled and incident into the free space, thereby realizing the local light emission function.

[0040] In addition, the array element antenna 13 is also used to receive remote light emitted by an external device, so that the remote light in the free space is spatially coupled to the optical fiber through the array element antenna 13, so that the remote optical signal is coupled into the second port of the circulator 11, and is unidirectionally transmitted from the second port to the third port, and then transmitted to the filter module 30 and the communication detection module 20 through the third port. Among them, the communication detection module 20 can receive the remote optical signal and obtain various detection information such as intensity distribution information and phase information therein. Furthermore, the communication detection module 20 can also be electrically connected to the control module 50, so that the optical signal can be demodulated by the control module 50.

[0041] See also Figure 1 In an embodiment of the present invention, the transceiver module 10 further includes a coupling optical fiber 14 , and the coupling optical fiber 14 is connected between the second port and the array element antenna 13 .

[0042] Among them, by arranging the coupling optical fiber 14 between the second port and the array element antenna 13, the coupling efficiency of the remote optical signal can be adjusted and improved through the coupling optical fiber 14. Of course, the technical solution of the present invention is not limited to this. In some embodiments, the array element antenna 13 can also be directly connected to the second port of the circulator 11, which is conducive to reducing the volume and cost of the transceiver isolation device 100. The specific implementation method can be set according to actual needs.

[0043] See also Figure 1 In an embodiment of the present invention, the filtering module 30 includes an input end and an output end, the input end is connected to the third port by optical fiber, and the output end is connected to the communication detection module 20 by optical fiber.

[0044] The filter module 30 includes a tunable optical fiber filter, whose filtering wavelength can be adjusted and set to selectively transmit optical signals of a specific wavelength. In some embodiments, the tunable optical fiber filter can be configured as a fiber grating filter, and the tunable optical fiber filter can also be configured as other types of filters, which are not limited here.

[0045] See also Figure 1 In an embodiment of the present invention, the filtering module 30 includes a plurality of optical fiber filters, and the plurality of optical fiber filters are sequentially arranged and connected from the third port toward the communication detection system.

[0046] It should be noted that the technical solution of the present invention can achieve secondary isolation of the transceiver light beams through a single optical fiber filter on the basis of the primary isolation of the transceiver light beams achieved by the circulator 11; further, a plurality of optical fiber filters can be sequentially arranged and connected between the third port of the circulator 11 and the communication detection module 20, so that the transceiver isolation device 100 can have a higher degree of isolation through the plurality of optical fiber filters arranged in series. The number of optical fiber filters can be set according to the actual isolation requirements and is not limited here.

[0047] In addition, since the optical fiber filter is an optical fiber device, several optical fiber filters can be conveniently assembled into the filter module 30, so that when the isolation degree of the communication detection module 20 needs to be adjusted, the number of optical fiber filters can be conveniently adjusted by plugging and unplugging the optical fiber device, so that the transceiver isolation device 100 can be adapted to flexible and changeable laser communication networking scenarios.

[0048] The present invention also proposes a laser communication transceiver isolation system, which includes a transceiver isolation device 100. The specific structure of the transceiver isolation device 100 refers to the above-mentioned embodiment. Since the laser communication transceiver isolation system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0049] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A transceiver isolation device, characterized in that: include: A transceiver module, used for receiving remote light emitted by an external device and outputting the remote light as a remote optical signal; A communication detection module, used for receiving the remote optical signal; A filter module, connected between the communication detection module and the transceiver module, wherein the filter wavelength of the filter module can be adjusted and set to selectively transmit optical signals of a specific wavelength; A detection module, used to detect the wavelength of the remote optical signal; A control module, connected to the filtering module and the detection module respectively; The control module is used to control the filtering wavelength of the filtering module to be equal to the wavelength of the remote optical signal according to the detection result of the detection module, so that the filtering module selectively filters the remote optical signal.

2. The transceiver isolation device according to claim 1, characterized in that: The transceiver isolation device further includes a beam splitter module, which is disposed downstream of the transceiver module and is optically connected to the transceiver module, and is used to split the remote optical signal output by the transceiver module into a first optical signal and a second optical signal; The filtering module and the communication detection module are both arranged on the transmission path of the first optical signal, and are arranged in sequence along the transmission direction of the first optical signal to transmit and receive the first optical signal respectively; The detection module is arranged on the transmission path of the second optical signal to detect the wavelength of the second optical signal.

3. The transmitting and receiving isolation device according to claim 2, characterized in that: The detection module comprises: A frequency sweep unit, configured to output a frequency sweep signal within a specific frequency band, wherein the wavelength of the second optical signal is within the specific frequency band; a beam combining unit, disposed downstream of the beam splitting module and optically connected to the beam splitting module and the frequency sweeping unit, respectively, for receiving the second optical signal and the frequency sweeping signal, so that the frequency sweeping signal and the remote optical signal are combined to form a detection optical signal; and a detection unit, disposed downstream of the beam combining unit and in optical communication with the beam combining unit, the detection unit being used to receive the detection light signal to detect whether the detection light signal is at an energy peak; When the detection optical signal is at an energy peak, the wavelength of the frequency sweep signal is equal to the wavelength of the remote optical signal.

4. The transmitting and receiving isolation device according to claim 3, characterized in that: The detection unit is configured as a photoelectric detector, and the photoelectric detector is optically connected to the beam combining unit; And / or, the frequency sweeping unit is configured as a frequency sweeping laser, and the frequency sweeping laser is connected to the beam combining unit via an optical fiber.

5. The transmitting and receiving isolation device according to claim 2, characterized in that: The detection module is configured as a spectrometer.

6. The transmitting and receiving isolation device according to any one of claims 1 to 5, characterized in that: The transceiver module comprises: A circulator, the circulator comprising at least a first port, a second port and a third port, the first port is optically connected to the second port, and the second port is optically connected to the third port; a local laser, disposed at the first port, for outputting a local optical signal toward the first port, so that the local optical signal is unidirectionally transmitted from the first port to the second port; and An array element antenna is arranged at the second port, and is used to receive a local optical signal output by the second port and transmit it to the outside. The array element antenna is also used to receive remote light emitted by an external device to output the remote optical signal toward the second port, so that the remote optical signal is transmitted unidirectionally from the second port to the third port.

7. The transmitting and receiving isolation device according to claim 6, characterized in that: The transceiver module further includes a coupling optical fiber connected between the second port and the array element antenna.

8. The transmitting and receiving isolation device according to claim 6, characterized in that: The filtering module comprises an input end and an output end, the input end is connected to the third port by optical fiber, and the output end is connected to the communication detection module by optical fiber.

9. The transmitting and receiving isolation device according to claim 8, characterized in that: The filtering module includes a plurality of optical fiber filters, and the plurality of optical fiber filters are sequentially arranged and connected from the third port toward the communication detection system.

10. A laser communication transceiver isolation system, characterized in that: It comprises the transceiver isolation device as described in any one of claims 1 to 9.

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