An outdoor optical line protection module

Abstract

The utility model discloses an outdoor optical line protection module relates to the technical field of optical fiber communication, including optical path module, circuit module and waterproof dustproof assembly module, the optical path module with circuit module all set up in waterproof dustproof assembly module, the optical path module includes optical power regulation submodule and optical path switching submodule, optical power regulation submodule and optical path switching submodule all are connected with circuit module, and circuit module is used for controlling optical power regulation submodule realizes optical power regulation function, and controls optical path switching submodule and realizes optical path switching function. This optical line protection module has integrated main side light path switching function and optical power regulation function, and has waterproof dustproof IP67 level's performance, can realize industrial -grade working temperature, can satisfy the requirement of long -term outdoor use well, can effectively promote outdoor communication equipment environmental adaptability, switching stability and long -term operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication technology, and in particular to an outdoor optical line protection module. Background Technology

[0002] With the widespread application of fiber optic communication systems, outdoor fiber optic cables are susceptible to damage from reckless construction, natural disasters, and other factors, leading to line faults and communication disruptions. To ensure rapid communication recovery, line protection technology that enables quick switching to backup channels via optical switches has emerged. Simultaneously, to avoid the impact of fluctuations in input optical power and sudden strong optical signals on the line, integrating adjustable optical attenuators into line protection modules has become a key technological trend for improving the environmental adaptability, switching stability, and long-term maintenance efficiency of outdoor communication equipment. Utility Model Content

[0003] In response to the aforementioned problems and technical requirements, the applicant has proposed an outdoor optical line protection module.

[0004] The technical solution of this utility model is as follows:

[0005] An outdoor optical line protection module includes an optical path module, a circuit module, and a waterproof and dustproof assembly module, wherein the optical path module and the circuit module are both disposed in the waterproof and dustproof assembly module;

[0006] The optical path module includes an optical power adjustment submodule and an optical path switching submodule. Both the optical power adjustment submodule and the optical path switching submodule are connected to the circuit module. The circuit module is used to control the optical power adjustment submodule to perform optical power adjustment and to control the optical path switching submodule to perform optical path switching.

[0007] A further technical solution is that the optical power adjustment submodule includes a first signal input terminal, a first beam splitter, a first photodetector, an adjustable optical attenuator, a second beam splitter, a second photodetector, and a first signal output terminal, wherein...

[0008] The first signal input terminal is connected to the common terminal of the first beam splitter, the main output optical path terminal of the first beam splitter is connected to the input terminal of the adjustable optical attenuator, and the output monitoring terminal of the first beam splitter is connected to the first photodetector; the common terminal of the second beam splitter is connected to the output terminal of the adjustable optical attenuator, the main output optical path terminal of the second beam splitter is connected to the first signal output terminal, and the output monitoring terminal of the second beam splitter is connected to the second photodetector.

[0009] A further technical solution is that the optical path switching submodule includes a second signal input terminal, a third beam splitter, a third photodetector, an optical switch device, a fourth beam splitter, a fourth photodetector, a second signal output terminal, a fifth beam splitter, a fifth photodetector, and a third signal output terminal, wherein...

[0010] The second signal input terminal is connected to the common terminal of the third beam splitter, the main output optical path terminal of the third beam splitter is connected to the input terminal of the optical switch device, and the output monitoring terminal of the third beam splitter is connected to the third photodetector; the common terminal of the fourth beam splitter is connected to the first output terminal of the optical switch device, the main output optical path terminal of the fourth beam splitter is connected to the second signal output terminal, and the output monitoring terminal of the fourth beam splitter is connected to the fourth photodetector; the common terminal of the fifth beam splitter is connected to the second output terminal of the optical switch device, the main output optical path terminal of the fifth beam splitter is connected to the third signal output terminal, and the output monitoring terminal of the fifth beam splitter is connected to the fifth photodetector.

[0011] A further technical solution is that the first photodetector, the second photodetector, the adjustable light attenuator, the third photodetector, the fourth photodetector, the fifth photodetector, and the optical switch device are adapted and connected to the circuit module.

[0012] A further technical solution is that the type of the tunable light attenuator is a thermo-optical tunable light attenuator, an electro-optical tunable light attenuator, or a MEMS tunable light attenuator.

[0013] A further technical solution is that the type of optical switch device is a mechanical optical switch or a MEMS optical switch.

[0014] A further technical solution is that the circuit module includes an ESD circuit unit, a lightning protection circuit unit, an EMI filter circuit unit, a voltage conversion circuit unit, an optical switch function control unit, and an adjustable optical attenuator function control unit, wherein...

[0015] The ESD circuit unit and the lightning protection circuit unit are both connected to the EMI filter circuit unit, the EMI filter circuit unit is connected to the voltage conversion circuit unit, and the voltage conversion circuit unit is connected to the optical switch function control unit and the adjustable optical attenuator function control unit.

[0016] A further technical solution is that the ESD circuit unit and the lightning protection circuit unit are connected to the power supply voltage. The ESD circuit unit is used to provide electrostatic protection for the circuit module, and the lightning protection circuit unit is used to suppress circuit surges. The power supply voltage is input to the EMI filter circuit unit from the ESD circuit unit and the lightning protection circuit unit.

[0017] The EMI filter circuit unit is used to provide electromagnetic interference protection and to shape and filter the power supply voltage; the voltage conversion circuit unit is used to convert the shaped and filtered voltage into the operating voltage required by the optical switch function control unit and the adjustable optical attenuator function control unit, and to power the optical switch function control unit and the adjustable optical attenuator function control unit.

[0018] A further technical solution is that the waterproof and dustproof assembly module includes a matching upper cover and a base; the upper cover includes a cover plate and a waterproof sealing ring disposed on the bottom surface of the cover plate;

[0019] The base includes a base housing, a waterproof and dustproof electrical interface disposed on the base housing, a first waterproof and dustproof fiber optic adapter flange, a second waterproof and dustproof fiber optic adapter flange, a third waterproof and dustproof fiber optic adapter flange, and a waterproof and breathable valve.

[0020] A further technical solution is that the operating temperature range of all devices in the optical path module and circuit module is at least -40℃ to 85℃.

[0021] The beneficial technical effects of this utility model are:

[0022] The outdoor optical line protection module provided by this utility model integrates the main and side optical path switching function and the optical power adjustment function. It has a waterproof and dustproof IP67 rating and can achieve industrial-grade operating temperature. It can well meet the requirements of long-term outdoor use and effectively improve the environmental adaptability, switching stability and long-term operation and maintenance efficiency of outdoor communication equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the outdoor optical line protection module switching submodule switching to the main path in one embodiment of this utility model.

[0024] Figure 2 This is a schematic diagram of the outdoor optical line protection module switching submodule switching to bypass mode in one embodiment of this utility model.

[0025] Figure 3 This is a schematic block diagram of a circuit module in one embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of a waterproof and dustproof assembly module in one embodiment of this utility model.

[0027] Figure 5 This is a schematic diagram of the upper cover in a waterproof and dustproof assembly module according to one embodiment of this utility model.

[0028] Figure label:

[0029] 101-Circuit Module, 102-Waterproof and Dustproof Assembly Module, 103-First Signal Input Terminal, 104-First Beam Splitter, 105-First Photodetector, 106-Adjustable Optical Attenuator, 107-Second Beam Splitter, 108-Second Photodetector, 109-First Signal Output Terminal, 110-Second Signal Input Terminal, 111-Third Beam Splitter, 112-Third Photodetector, 113-Optical Switch Device, 114-Fourth Beam Splitter, 115-Fourth Photodetector, 116-Second Signal Output Terminal, 117-Fifth Beam Splitter, 118-Fifth Photodetector, 119-Third Signal Output Terminal, 201-Cover Plate, 202-Base Housing, 203-Waterproof and Dustproof Electrical Interface, 204-First Waterproof and Dustproof Fiber Optic Adapter Flange, 205-Second Waterproof and Dustproof Fiber Optic Adapter Flange, 206-Third Waterproof and Dustproof Fiber Optic Adapter Flange, 207-Waterproof Breathable Valve, 208-Waterproof Sealing Ring. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure.

[0031] This utility model provides an outdoor optical line protection module, including an optical path module, a circuit module 101, and a waterproof and dustproof assembly module 102. The optical path module and the circuit module 101 are both disposed in the waterproof and dustproof assembly module 102. The optical path module includes an optical power adjustment submodule and an optical path switching submodule. The optical power adjustment submodule and the optical path switching submodule are both connected to the circuit module 101. The circuit module 101 is used to control the optical power adjustment submodule to realize the optical power adjustment function and to control the optical path switching submodule to realize the optical path switching function.

[0032] Specifically, the operating temperature range of all components in the optical path module and circuit module is at least -40℃ to 85℃ to achieve industrial-grade operating temperature and well meet the requirements for long-term outdoor use. The specific forms of the optical power adjustment submodule, optical path switching submodule, and circuit module 101 can be referred to the following description, as can the specific implementation forms of the optical power adjustment function and optical path switching function.

[0033] Further, please refer to Figure 1-2The optical power adjustment submodule includes a first signal input terminal 103, a first beam splitter 104, a first photodetector 105, an adjustable optical attenuator 106, a second beam splitter 107, a second photodetector 108, and a first signal output terminal 109. The first signal input terminal 103 is connected to the common terminal of the first beam splitter 104, the main output optical path terminal of the first beam splitter 104 is connected to the input terminal of the adjustable optical attenuator 106, and the output monitoring terminal of the first beam splitter 104 is connected to the first photodetector 105. The common terminal of the second beam splitter 107 is connected to the output terminal of the adjustable optical attenuator 106, the main output optical path terminal of the second beam splitter 107 is connected to the first signal output terminal 109, and the output monitoring terminal of the second beam splitter 107 is connected to the second photodetector 108.

[0034] The optical path switching submodule includes a second signal input terminal 110, a third beam splitter 111, a third photodetector 112, an optical switch device 113, a fourth beam splitter 114, a fourth photodetector 115, a second signal output terminal 116, a fifth beam splitter 117, a fifth photodetector 118, and a third signal output terminal 119. The second signal input terminal 110 is connected to the common terminal of the third beam splitter 111, and the main output optical path terminal of the third beam splitter 111 is connected to the input terminal of the optical switch device 113. The output monitoring of the third beam splitter 111... The common terminal of the fourth beam splitter 114 is connected to the first output terminal of the optical switch device 113, the main output optical path terminal of the fourth beam splitter 114 is connected to the second signal output terminal 116, and the output monitoring terminal of the fourth beam splitter 114 is connected to the fourth photodetector 115; the common terminal of the fifth beam splitter 117 is connected to the second output terminal of the optical switch device 113, the main output optical path terminal of the fifth beam splitter 117 is connected to the third signal output terminal 119, and the output monitoring terminal of the fifth beam splitter 117 is connected to the fifth photodetector 118.

[0035] Optionally, the tunable optical attenuator 106 may be a thermo-optical tunable optical attenuator, an electro-optical tunable optical attenuator, or a MEMS tunable optical attenuator. The optical switch device 113 may be a mechanical optical switch or a MEMS optical switch.

[0036] Further, please refer to Figure 3 The circuit module includes an ESD circuit unit, a lightning protection circuit unit, an EMI filter circuit unit, a voltage conversion circuit unit, an optical switch function control unit, and an adjustable optical attenuator function control unit. The ESD circuit unit and the lightning protection circuit unit are connected to the EMI filter circuit unit, the EMI filter circuit unit is connected to the voltage conversion circuit unit, and the voltage conversion circuit unit is connected to the optical switch function control unit and the adjustable optical attenuator function control unit.

[0037] The first photodetector 105, the second photodetector 108, the adjustable optical attenuator 106, the third photodetector 112, the fourth photodetector 115, the fifth photodetector 118, and the optical switch device 113 are adapted and connected to the circuit module 101. Specifically, the first photodetector 105, the second photodetector 108, and the adjustable optical attenuator 106 are connected to the adjustable optical attenuator function control unit, and the third photodetector 112, the fourth photodetector 115, the fifth photodetector 118, and the optical switch device 113 are connected to the optical switch function control unit.

[0038] The ESD circuit unit and the lightning protection circuit unit are connected to the power supply voltage. The ESD circuit unit is used for electrostatic protection of the circuit module, and the lightning protection circuit unit is used to suppress circuit surges. The power supply voltage is input from the ESD circuit unit and the lightning protection circuit unit to the EMI filter circuit unit. The EMI filter circuit unit is used to provide electromagnetic interference protection and isolation, and to shape and filter the power supply voltage. The voltage conversion circuit unit is used to convert the shaped and filtered voltage into the operating voltage required by the optical switch function control unit and the adjustable optical attenuator function control unit, thus powering the optical switch function control unit and the adjustable optical attenuator function control unit. The specific forms of the ESD circuit unit, the lightning protection circuit unit, the EMI filter circuit unit, the voltage conversion circuit unit, the optical switch function control unit, and the adjustable optical attenuator function control unit can all be the same as those commonly used in this technical field.

[0039] The method for implementing the optical power adjustment function can be consistent with existing technologies. In this embodiment, the optical signal input to the first input terminal 103 enters the first photodetector 105 through the output monitoring terminal of the first beam splitter 104, and the optical signal output by the adjustable optical attenuator 106 enters the second photodetector 108 through the output monitoring terminal of the second beam splitter 107. The first photodetector 105 and the second photodetector 108 convert the optical signal into an electrical signal. The adjustable optical attenuator function control unit dynamically adjusts the attenuation ratio of the adjustable optical attenuator 106 according to the electrical signals output by the first photodetector 105 and the second photodetector 108 to achieve closed-loop stability of the output optical power of the first output terminal 109. The adjustable optical attenuator function control unit can also calculate the input optical power through the electrical signal output by the first photodetector 105, and increase the attenuation ratio of the adjustable optical attenuator 106 when the input optical power is greater than a set threshold to protect the back-end devices.

[0040] The optical path switching function can also be implemented in a manner consistent with existing technologies. In this embodiment, the optical signal input from the second input terminal 110 enters the third photodetector 112 through the output monitoring terminal of the third beam splitter 111, the optical signal output from the first output terminal of the optical switch device 113 enters the fourth photodetector 115 through the output monitoring terminal of the fourth beam splitter 114, and the optical signal output from the second output terminal of the optical switch device 113 enters the fifth photodetector 118 through the output monitoring terminal of the fifth beam splitter 117. The third photodetector 112, the fourth photodetector 115, and the fifth photodetector 118 convert the detected optical signals into electrical signals and transmit them to the optical switch function control unit. The optical switch function control unit controls the optical switch device 113 to switch the optical path according to the received electrical signals. Figure 1 This is a schematic diagram of the optical switch function control unit controlling the optical switch device 113 to switch to the main path. The optical signal is input from the second input terminal 110 and output from the second output terminal 116. Figure 2 This is a schematic diagram of the optical switch function control unit controlling the optical switch device 113 to switch to bypass mode. The optical signal is input from the second input terminal 110 and output from the third output terminal 119.

[0041] Furthermore, the waterproof and dustproof assembly module 102 includes a matching upper cover and a base;

[0042] Please refer to Figure 4-5 The upper cover includes a cover plate 201 and a waterproof sealing ring 208 disposed on the bottom surface of the cover plate 201; the base includes a base housing 202, a waterproof and dustproof electrical interface 203 disposed on the base housing 202, a first waterproof and dustproof optical fiber adapter flange 204, a second waterproof and dustproof optical fiber adapter flange 205, a third waterproof and dustproof optical fiber adapter flange 206, and a waterproof and breathable valve 207.

[0043] Specifically, the upper cover is assembled to the base using assembly screws to form a cavity. The optical path module and circuit module 101 are disposed within the cavity. The waterproof sealing ring 208 is disposed along the edge of the cover plate 201 to improve the airtightness and waterproofness of the cavity. The assembly screws are Dacromet-treated stainless steel screws. Optical signals are input to or output to the outdoor optical line protection module through the first waterproof and dustproof fiber optic adapter flange 204, the second waterproof and dustproof fiber optic adapter flange 205, and the third waterproof and dustproof fiber optic adapter flange 206. The first waterproof and dustproof fiber optic adapter flange 204 is connected to the first input terminal 103 and the first output terminal 109. The second waterproof and dustproof fiber optic adapter flange 205 is connected to the second input terminal 110 and the second output terminal 116. The third waterproof and dustproof fiber optic adapter flange 206 is connected to the third output terminal 119. The waterproof and dustproof electrical interface 203 is used to transmit power supply voltage, input control signals, and output control signals. The input control signal and output control signal are used to control the optical switch function control unit and the adjustable optical attenuator function control unit.

[0044] In the description of this specification, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. A feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The use of terms such as "an embodiment / mode" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode is included in at least one embodiment / mode of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode. The above descriptions are merely preferred embodiments of this utility model, and this utility model is not limited to the above embodiments. It is understood that other improvements and variations directly derived or conceived by those skilled in the art without departing from the spirit and concept of this utility model should be considered to be included within the protection scope of this utility model.

Claims

1. An outdoor optical line protection module, characterized in that, It includes an optical path module, a circuit module (101), and a waterproof and dustproof assembly module (102), wherein the optical path module and the circuit module (101) are both disposed in the waterproof and dustproof assembly module (102); The optical path module includes an optical power adjustment submodule and an optical path switching submodule. Both the optical power adjustment submodule and the optical path switching submodule are connected to the circuit module (101). The circuit module (101) is used to control the optical power adjustment submodule to realize the optical power adjustment function and to control the optical path switching submodule to realize the optical path switching function. The optical power adjustment submodule includes a first signal input terminal (103), a first beam splitter (104), a first photodetector (105), an adjustable optical attenuator (106), a second beam splitter (107), a second photodetector (108), and a first signal output terminal (109), wherein, The first signal input terminal (103) is connected to the common terminal of the first beam splitter (104), the main output optical path terminal of the first beam splitter (104) is connected to the input terminal of the adjustable optical attenuator (106), and the output monitoring terminal of the first beam splitter (104) is connected to the first photodetector (105); the common terminal of the second beam splitter (107) is connected to the output terminal of the adjustable optical attenuator (106), the main output optical path terminal of the second beam splitter (107) is connected to the first signal output terminal (109), and the output monitoring terminal of the second beam splitter (107) is connected to the second photodetector (108).

2. The outdoor optical line protection module according to claim 1, characterized in that, The optical path switching submodule includes a second signal input terminal (110), a third beam splitter (111), a third photodetector (112), an optical switch device (113), a fourth beam splitter (114), a fourth photodetector (115), a second signal output terminal (116), a fifth beam splitter (117), a fifth photodetector (118), and a third signal output terminal (119), wherein, The second signal input terminal (110) is connected to the common terminal of the third beam splitter (111), the main output optical path terminal of the third beam splitter (111) is connected to the input terminal of the optical switch device (113), and the output monitoring terminal of the third beam splitter (111) is connected to the third photodetector (112); the common terminal of the fourth beam splitter (114) is connected to the first output terminal of the optical switch device (113), the main output optical path terminal of the fourth beam splitter (114) is connected to the second signal output terminal (116), and the output monitoring terminal of the fourth beam splitter (114) is connected to the fourth photodetector (115); the common terminal of the fifth beam splitter (117) is connected to the second output terminal of the optical switch device (113), the main output optical path terminal of the fifth beam splitter (117) is connected to the third signal output terminal (119), and the output monitoring terminal of the fifth beam splitter (117) is connected to the fifth photodetector (118).

3. The outdoor optical line protection module according to claim 2, characterized in that, The first photodetector (105), the second photodetector (108), the adjustable light attenuator (106), the third photodetector (112), the fourth photodetector (115), the fifth photodetector (118), and the optical switch device (113) are adapted and connected to the circuit module (101).

4. The outdoor optical line protection module according to claim 1, characterized in that, The type of the tunable light attenuator (106) is a thermo-optical tunable light attenuator, an electro-optical tunable light attenuator, or a MEMS tunable light attenuator.

5. The outdoor optical line protection module according to claim 2, characterized in that, The optical switch device (113) is a mechanical optical switch or a MEMS optical switch.

6. The outdoor optical line protection module according to claim 3, characterized in that, The circuit module includes an ESD circuit unit, a lightning protection circuit unit, an EMI filter circuit unit, a voltage conversion circuit unit, an optical switch function control unit, and an adjustable optical attenuator function control unit. The ESD circuit unit and the lightning protection circuit unit are both connected to the EMI filter circuit unit, the EMI filter circuit unit is connected to the voltage conversion circuit unit, and the voltage conversion circuit unit is connected to the optical switch function control unit and the adjustable optical attenuator function control unit.

7. The outdoor optical line protection module according to claim 6, characterized in that, The ESD circuit unit and the lightning protection circuit unit are connected to the power supply voltage. The ESD circuit unit is used to provide electrostatic protection for the circuit module, and the lightning protection circuit unit is used to suppress circuit surges. The power supply voltage is input to the EMI filter circuit unit from the ESD circuit unit and the lightning protection circuit unit. The EMI filter circuit unit is used to provide electromagnetic interference protection and to shape and filter the power supply voltage; the voltage conversion circuit unit is used to convert the shaped and filtered voltage into the operating voltage required by the optical switch function control unit and the adjustable optical attenuator function control unit, and to power the optical switch function control unit and the adjustable optical attenuator function control unit.

8. The outdoor optical line protection module according to claim 1, characterized in that, The waterproof and dustproof assembly module (102) includes a matching top cover and a base; The upper cover includes a cover plate (201) and a waterproof sealing ring (208) disposed on the bottom surface of the cover plate (201). The base includes a base housing (202), a waterproof and dustproof electrical interface (203) disposed on the base housing (202), a first waterproof and dustproof fiber optic adapter flange (204), a second waterproof and dustproof fiber optic adapter flange (205), a third waterproof and dustproof fiber optic adapter flange (206), and a waterproof and breathable valve (207).

9. The outdoor optical line protection module according to any one of claims 1-8, characterized in that, The operating temperature range of all components in the optical path module and circuit module is at least -40℃ to 85℃.

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