CN215186764U - Light receiving and transmitting integrated device for spatial long-distance communication - Google Patents
Light receiving and transmitting integrated device for spatial long-distance communication Download PDFInfo
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- CN215186764U CN215186764U CN202121801382.XU CN202121801382U CN215186764U CN 215186764 U CN215186764 U CN 215186764U CN 202121801382 U CN202121801382 U CN 202121801382U CN 215186764 U CN215186764 U CN 215186764U
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Abstract
The utility model belongs to the technical field of optical communication, concretely relates to light receiving and dispatching integrated device for space long distance communication, the device includes: the optical fiber amplifier comprises a low-noise erbium-doped optical fiber amplifier, a transmitting-receiving integrated optical module and a high-power erbium-doped optical fiber amplifier; the output end of the receiving and transmitting integrated optical module is connected with the input end of the high-power erbium-doped optical fiber amplifier through an interface to form an optical receiving and transmitting integrated device; the utility model discloses integrate low noise EDFA, high-power EDFA and receiving and dispatching optical module, reduced the weight of space long distance communication's light receiving and dispatching integrated device, reduced the shared space of device.
Description
Technical Field
The utility model belongs to the technical field of the optical communication, concretely relates to light receiving and dispatching integrated device for space long distance communication.
Background
Optical modules and erbium-doped fiber amplifiers (EDFAs) are widely applied to the technical field of optical communication, and the development of optical fiber system application is greatly promoted. The EDFA can realize the amplification of optical power, thereby realizing the spatial long-distance communication. The preposed EDFA can amplify received optical power with low noise, and the postposed EDFA can output high-power optical signals. The existing space laser communication method mainly adopts a mode of combining a front low-noise EDFA, a transmitting-receiving integrated optical module and a rear high-power EDFA to realize long-distance space communication, and can cause the problems of space waste, complex thermal control treatment, difficult optical fiber winding, weight increase and the like.
Disclosure of Invention
For the problem that prior art provided above the solution, the utility model provides an optical transceiver integrated device for space long distance communication, the device includes: the optical fiber amplifier comprises a low-noise erbium-doped optical fiber amplifier, a transmitting-receiving integrated optical module and a high-power erbium-doped optical fiber amplifier; the output end of the low-noise erbium-doped fiber amplifier is connected with the input end of the receiving-transmitting integrated optical module through a single mode fiber, and the output end of the receiving-transmitting integrated optical module is connected with the input end of the high-power erbium-doped fiber amplifier through an interface to form an optical receiving-transmitting integrated device.
Preferably, the low-noise erbium-doped fiber amplifier comprises 2 PD detectors, 2 couplers, 2 isolators, 2 wavelength division multiplexers, a first interface, 980/1480nm pump lasers, 980nm pump lasers, and a microprocessor control unit; the output end of the first interface is respectively connected with the first PD detector and the first coupler; the other end of the first PD detector is connected with the microprocessor control unit; one end of the first isolator is connected with the first coupler, and the other end of the first isolator is connected with the first wavelength division multiplexer; the first wavelength division multiplexer is respectively connected with the second wavelength division multiplexer and the 980nm pump laser; the 980nm pump laser is connected with the microprocessor control unit; the second wavelength division multiplexer is respectively connected with the second isolator and the 980/1480nm pump laser; the 980/1480nm pump laser is connected with the microprocessor control unit; the other end of the second isolator is connected with the second coupler; the output end of the second coupler is connected with the second PD detector and is connected with the receiving and transmitting integrated optical module by adopting a single mode fiber; the other end of the second PD detector is connected with a microprocessor control unit to form a low-noise erbium-doped fiber amplifier.
Furthermore, the first wavelength division multiplexer and the second wavelength division multiplexer are connected by erbium-doped fibers.
Preferably, the structure of the high-power erbium-doped fiber amplifier is the same as that of the low-noise erbium-doped fiber amplifier.
Preferably, the transceiver optical module comprises 2 interfaces, a PIN/APD detector, a TIA (trans-group amplifier), a low-pass filter, a limiting amplifier, a linear driver, an EEPROM (electrically erasable programmable read-only memory), a laser and a laser driver; the output end of the second interface is connected with the PIN/APD detector; the TIA is respectively connected with the output end of the PIN/APD detector and the input end of the low-pass filter; the output end of the low-pass filter is connected with the input end of the limiting amplifier, and the output end of the limiting amplifier is connected with the linear driver; the output end of the linear driver is connected with the laser driver; carrying out I on the EEPROM with the electrically erasable and programmable read-only memory and the external communication unit2C, communication; the output end of the laser driver is connected with the laser; the laser is provided with a third interface to form a transmitting-receiving integrated optical module.
Further, the first interface, the second interface and the third interface are all 900 μm loose tube with FC/APC connectors.
Preferably, the low-noise erbium-doped fiber amplifier is used for receiving weak optical signals in space and performing low-noise amplification, so that the detection sensitivity of the optical signals is improved, and the optical power of the optical signals is increased; the receiving and transmitting integrated optical module is used for converting an input radio frequency differential electric signal into a space optical signal and realizing the electro-optical conversion of the signal; the module can also be used for converting the received space optical signal into a radio frequency differential electrical signal to realize the photoelectric conversion of the signal; the high-power erbium-doped optical fiber amplifier amplifies received signal light at high power, increases the transmission distance of space optical signals and realizes space long-distance optical communication.
Preferably, the light receiving and transmitting integrated device is provided with a packaging shell, and the packaging shell is of a cuboid structure.
Furthermore, the length of the packaging shell is 179.8 mm-180.2 mm; the width is 119.8 mm-120.1 mm; the height is 19.9 mm-20.1 mm.
Has the advantages that:
1. the low-noise EDFA, the high-power EDFA and the transmitting-receiving integrated optical module are integrated, so that the weight of the optical transmitting-receiving integrated device for spatial long-distance communication is reduced, and the occupied space of the device is reduced.
2. The connecting optical fiber between the low-noise EDFA, the high-power EDFA and the receiving-transmitting integrated optical module is fixed, the winding space of the connecting optical fiber is reduced, the repeated connection of the optical fiber between the optical module and the EDFA is effectively avoided, and the pollution to the end surface of the optical fiber is avoided.
3. The device heat dissipation is carried out by the same heat dissipation surface, so that the thermal control of the device is facilitated.
4. The device carries out data transmission by the same interface, and is convenient for the control and data reading of the optical transceiving integrated device.
Drawings
Fig. 1 is a schematic view of the spatial long-distance communication optical transceiver of the present invention;
fig. 2 is a block diagram of the spatial long-distance communication optical transceiver integrated device of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An integrated optical transceiver device for long-distance spatial communication, the device comprising: the optical fiber amplifier comprises a low-noise erbium-doped optical fiber amplifier, a transmitting-receiving integrated optical module and a high-power erbium-doped optical fiber amplifier; the output end of the low-noise erbium-doped fiber amplifier is connected with the input end of the receiving-transmitting integrated optical module through a single mode fiber, and the output end of the receiving-transmitting integrated optical module is connected with the input end of the high-power erbium-doped fiber amplifier through an interface to form an optical receiving-transmitting integrated device.
The low-noise erbium-doped optical fiber amplifier, the receiving-transmitting integrated optical module and the high-power erbium-doped optical fiber amplifier of the optical receiving-transmitting integrated device are welded and fixed on the processing board, and are connected with each component according to the schematic diagram shown in fig. 1 to perform receiving optical low-noise power amplification, interconversion between optical signals and electric signals and high-power amplification of the optical signals.
The light receiving and transmitting integrated device integrates the internal devices of the low-noise EDFA, the receiving and transmitting integrated optical module and the high-power EDFA. The low-noise EDFA part inputs signal light through an FC/APC interface, outputs the signal light to the FC/APC interface of the optical module through single-mode fiber after being amplified by low-noise power, and outputs differential radio frequency data through photoelectric conversion of the optical module; the radio frequency input interface of the optical module inputs differential radio frequency signals, the differential radio frequency signals are input to the high-power EDFA from the FC/APC interface through electro-optical conversion of the optical module, and high-power signal light is output through the FC/APC interface after high-power amplification. Wherein the EDFA represents an erbium-doped fiber amplifier.
For the low-noise EDFA part, signal light is input through a single-mode optical fiber with an FC/APC connector, and the signal light is respectively connected with a PD detector 1 and a coupler 1 after light splitting. The output end of the coupler 1 is connected to the isolator 1, and the coupler 1 couples the input light to the receiving optical fiber and transmits the input light to the isolator 1. The input end of the isolator 1 is connected with the output end of the coupler 1 to isolate the reflected light of the incident light. The input end of the wavelength division multiplexing 1 is respectively connected with the output end of the isolator 1 and the 980nm pump laser 1, and light with different wavelengths is combined together and coupled into an optical fiber for transmission. The input end of the wavelength division multiplexing 2 is respectively connected with the output end of the wavelength division multiplexing 1 and the 980/1480nm pump laser 1 and is coupled into an optical fiber for transmission. The input end of the isolator 2 is connected with the output end of the wavelength division multiplexing 2 to isolate the reflected light of the incident light. The input end of the coupler 2 is connected with the output end of the isolator 2, and the output end of the coupler 2 is respectively connected with the input end of the PD detector 2 and the input end of the receiving-transmitting integrated optical module. The microprocessing control unit 1 respectively telemeters the PD detector 1, the PD detector 2, the 980nm pump laser 1 and the 980/1480nm pump laser 1, reports analog quantity, and remotely controls the pump currents of the 980nm pump laser 1 and the 980/1480nm pump laser 1, so that the output optical power of the low-noise EDFA is changed.
The receiving and transmitting integrated optical module comprises 2 interfaces, a PIN/APD detector, a trans-group amplifier TIA, a low-pass filter, a limiting amplifier, a linear driver, a charged erasable programmable read-only memory EEPROM, a laser and a laser driver; the output end of the second interface is connected with the PIN/APD detector; the TIA is respectively connected with the output end of the PIN/APD detector and the input end of the low-pass filter; the output end of the low-pass filter is connected with the input end of the limiting amplifier, and the output end of the limiting amplifier is connected with the linear driver; the output end of the linear driver is connected with the laser driver; carrying out I on the EEPROM with the electrically erasable and programmable read-only memory and the external communication unit2C, communication; the output end of the laser driver is connected with the laser; the laser is provided with a third interface to form a transmitting-receiving integrated optical module.
For the part of the transmitting-receiving integrated optical module, EEPROM and an external communication unit carry out I2And C, communication. The PIN/APD detector receives signal light from a low-noise EDFA through FC/APC, and is combined with a transimpedance amplifier (TIA) to convert a weak optical signal into a differential electrical signal, perform low-noise amplification on the signal with certain intensity, and perform differential signal output through a low-pass filter, a limiting amplifier and linear drive. The input radio frequency signal is converted into the driving current of the laser through the laser driving, the laser is driven to emit a light signal, and the electro-optic conversion of the signal is completed.
For the high-power EDFA part, input signal light is respectively connected with a PD detector 3 and a coupler 3 after being split. The output end of the coupler 3 is connected to the isolator 3, and the coupler 3 couples the input light to the receiving optical fiber and transmits the input light to the isolator 3. The input end of the isolator 3 is connected with the output end of the coupler 3 to isolate the reflected light of the incident light. The input end of the wavelength division multiplexing 3 is respectively connected with the output end of the isolator 3 and the 980nm pump laser 2, and light with different wavelengths is combined together and coupled into an optical fiber for transmission. The input end of the wavelength division multiplexing 4 is respectively connected with the output end of the wavelength division multiplexing 3 and the 980/1480nm pump laser 2 and is coupled into an optical fiber for transmission. The input end of the isolator 4 is connected with the output end of the wavelength division multiplexing 4 to isolate the reflected light of the incident light. The input end of the coupler 4 is connected with the output end of the isolator 4, and the output end of the coupler 4 is respectively connected with the input end of the PD detector 4 and the output end of the high-power EDFA. The microprocessing control unit 2 respectively telemeters the PD detector 3, the PD detector 4, the 980nm pump laser 2 and the 980/1480nm pump laser 2, reports analog quantity, and remotely controls the pump currents of the 980nm pump laser 2 and the 980/1480nm pump laser 2, so that the output light power of the high-power EDFA is changed.
Fig. 2 is a block diagram of the inter-long distance communication optical transceiver integrated device of the present invention. The optical fiber input/output interfaces are 900-micron loose sleeve connectors with FC/APC, and extend out of the device through taper sleeves. The power/control interface is J30J-25. 980/1480nm pump lasers, 980nm pump lasers and lasers of the optical modules of the EDFA are main heating sources and are arranged on the outer side inside the device for uniform heat dissipation.
The light receiving and transmitting integrated device is provided with a packaging shell.
Optionally, the structure of the package housing may be an irregular spatial three-dimensional structure, or a regular spatial three-dimensional structure.
Preferably, the package housing comprises a processing board and a package cover; all devices of the light receiving and transmitting integrated device are integrated on the processing board; the package cover is used for hermetic packaging. The processing plate is of a rectangular structure, and four corners of the processing plate are respectively provided with a through hole; the light receiving and transmitting integrated device is fixed through the through hole. The packaging cover is a hollow uncovered cuboid structure. The processing board and the encapsulation cover are fixed by bolts.
Optionally, the length of the packaging shell is 179.8 mm-180.2 mm; the width is 119.8 mm-120.1 mm; the height is 19.9 mm-20.1 mm. Preferably, the length of the package housing is 180mm, the width is 120mm, and the height is 20 mm.
Optionally, the longest distance between the centers of two adjacent through holes on the processing plate is 172.8 mm-173.2 mm, and the shortest distance is 112.9 mm-113.1 mm; preferably, the circle centers of two adjacent through holes on the processing plate have the longest distance of 173mm and the shortest distance of 113 mm.
In the description of the present invention, it should be understood that the terms "top", "bottom", "one end", "upper", "one side", "inner", "front", "rear", "center", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An integrated optical transceiver device for long-distance spatial communication, comprising: the optical fiber amplifier comprises a low-noise erbium-doped optical fiber amplifier, a transmitting-receiving integrated optical module and a high-power erbium-doped optical fiber amplifier; the output end of the low-noise erbium-doped fiber amplifier is connected with the input end of the receiving-transmitting integrated optical module through a single mode fiber, and the output end of the receiving-transmitting integrated optical module is connected with the input end of the high-power erbium-doped fiber amplifier through an interface to form an optical receiving-transmitting integrated device.
2. The integrated optical transceiver device for long-distance spatial communication according to claim 1, wherein the low-noise erbium-doped fiber amplifier comprises 2 PD detectors, 2 couplers, 2 isolators, 2 wavelength division multiplexers, a first interface, 980/1480nm pump laser, 980nm pump laser and a microprocessor control unit; the output end of the first interface is respectively connected with the first PD detector and the first coupler; the other end of the first PD detector is connected with the microprocessor control unit; one end of the first isolator is connected with the first coupler, and the other end of the first isolator is connected with the first wavelength division multiplexer; the first wavelength division multiplexer is respectively connected with the second wavelength division multiplexer and the 980nm pump laser; the 980nm pump laser is connected with the microprocessor control unit; the second wavelength division multiplexer is respectively connected with the second isolator and the 980/1480nm pump laser;
the 980/1480nm pump laser is connected with the microprocessor control unit; the other end of the second isolator is connected with the second coupler; the output end of the second coupler is connected with the second PD detector and is connected with the receiving and transmitting integrated optical module by adopting a single mode fiber; the other end of the second PD detector is connected with a microprocessor control unit to form a low-noise erbium-doped fiber amplifier.
3. The integrated optical transceiver device for long-distance spatial communication according to claim 2, wherein the first wavelength division multiplexer and the second wavelength division multiplexer are connected by erbium-doped fiber.
4. The integrated optical transceiver device for long-distance spatial communication according to claim 1, wherein the structure of the high-power erbium-doped fiber amplifier is the same as that of the low-noise erbium-doped fiber amplifier.
5. The integrated optical transceiver device for long-distance spatial communication according to claim 1, wherein the integrated transceiver module comprises 2 interfaces, a PIN/APD detector, a trans-group amplifier TIA, a low-pass filter, a limiting amplifier, a linear driver, a charged erasable programmable read-only memory EEPROM, a laser and a laser driver; the output end of the second interface is connected with the PIN/APD detector; the TIA is respectively connected with the output end of the PIN/APD detector and the input end of the low-pass filter; the output end of the low-pass filter is connected with the input end of the limiting amplifier, and the output end of the limiting amplifier is connected with the linear driver; the output end of the linear driver is connected with the laser driver; carrying out I on the EEPROM with the electrically erasable and programmable read-only memory and the external communication unit2C, communication; the output end of the laser driver is connected with the laser; the laser is provided with a third interface to form a transmitting-receiving integrated optical module.
6. The integrated optical transceiver device for long-distance spatial communication according to claim 5, wherein the first interface, the second interface and the third interface are all 900 μm loose-tube FC/APC connectors.
7. The integrated optical transceiver device for long-distance spatial communication according to claim 1, wherein the low-noise erbium-doped fiber amplifier is used for receiving weak optical signals in space and performing low-noise amplification, so as to improve the detection sensitivity of the optical signals and increase the optical power of the optical signals; the receiving and transmitting integrated optical module is used for converting an input radio frequency differential electric signal into a space optical signal and realizing the electro-optical conversion of the signal; the module can also be used for converting the received space optical signal into a radio frequency differential electrical signal to realize the photoelectric conversion of the signal; the high-power erbium-doped optical fiber amplifier amplifies received signal light at high power, increases the transmission distance of space optical signals and realizes space long-distance optical communication.
8. The integrated optical transceiver device for long-distance spatial communication according to claim 1, wherein the integrated optical transceiver device is provided with a package housing, and the package housing has a rectangular parallelepiped structure.
9. The integrated optical transceiver device for long-distance spatial communication according to claim 8, wherein the length of the package is 179.8 mm-180.2 mm; the width is 119.8 mm-120.1 mm; the height is 19.9 mm-20.1 mm.
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| CN202121801382.XU CN215186764U (en) | 2021-08-04 | 2021-08-04 | Light receiving and transmitting integrated device for spatial long-distance communication |
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| CN202121801382.XU CN215186764U (en) | 2021-08-04 | 2021-08-04 | Light receiving and transmitting integrated device for spatial long-distance communication |
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Address after: 401120 39-1, Building 1, No. 64, Middle Huangshan Avenue, Yubei District, Chongqing Patentee after: China Star Network Application Co.,Ltd. Address before: 401135 No. 618 Liangjiang Avenue, Longxing Town, Yubei District, Chongqing Patentee before: Dongfanghong Satellite Mobile Communication Co.,Ltd. |