CN211063040U - Heat dissipation structure of erbium-doped fiber amplifier, erbium-doped fiber laser device and system - Google Patents
Heat dissipation structure of erbium-doped fiber amplifier, erbium-doped fiber laser device and system Download PDFInfo
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- CN211063040U CN211063040U CN201922256693.1U CN201922256693U CN211063040U CN 211063040 U CN211063040 U CN 211063040U CN 201922256693 U CN201922256693 U CN 201922256693U CN 211063040 U CN211063040 U CN 211063040U
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Abstract
The utility model relates to an er-doped fiber amplifier technical field, concretely relates to er-doped fiber amplifier's heat radiation structure, er-doped fiber laser device and system, heat radiation structure is including the box body that has the wind channel mouth to and set up the multilayer erbium fiber wheel in the box body, and set up the heater between two adjacent erbium fiber wheels, er-doped fiber wheel convolutes er-doped fiber, the beneficial effects of the utility model reside in that, compare with prior art, the utility model discloses a maintain er-doped fiber's temperature, reduce the change volume of gain slope, fiber coating reliability obtains guaranteeing to and, because L-Band er-doped fiber amplifier inside temperature, whole quick-witted consumption all have great range to reduce, effectively improve system frame ambient temperature, communication system can support amplifier work at higher output, reach extension transmission distance, system expansion appearance purpose.
Description
Technical Field
The utility model relates to an er-doped fiber amplifier technical field, concretely relates to er-doped fiber amplifier's heat radiation structure, er-doped fiber laser device and system.
Background
In order to make the gain spectrum of signal light flat, the erbium-doped fiber amplifier usually adopts a heating box system to make the erbium-doped fiber work at a constant ambient temperature, thereby ensuring the gain spectrum of signal light flat.
However, as the capacity of communication systems increases and the transmission distances increase, the communication systems require amplifier products that provide higher gain and greater output optical power, and to do so, erbium-doped fiber amplifier products require the use of high-power pump laser devices in the order of watts. However, the erbium-doped fiber has low amplification efficiency due to high erbium ion doping concentration, most of the energy of the pump laser is converted into optical energy and thermal energy, and the self-heating phenomenon of the erbium-doped fiber is serious. Taking an environment temperature of 60 ℃ as an example, when a tile-level pump laser is used, the erbium-doped fiber heats the fiber to 90-100 ℃ due to self heating, a heating box system is not controlled at the moment, the slope of a gain spectrum changes rapidly, and meanwhile, the reliability risk of the erbium-doped fiber is brought because the temperature of the erbium-doped fiber exceeds the 85 ℃ working temperature allowed by a fiber coating layer.
Therefore, it is necessary to develop a system that can effectively solve self-heating of the erbium-doped fiber, improve the gain slope variation of the fiber caused by self-heating, and improve the application reliability of the fiber.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a heat radiation structure, erbium-doped fiber laser device and system of erbium-doped fiber amplifier, solve erbium-doped fiber self and generate heat out of control, arouse the problem that gain slope changes.
The utility model provides a technical scheme that its technical problem adopted is: the heat dissipation structure of the erbium-doped fiber amplifier comprises a box body with a wind channel opening, a plurality of layers of erbium fiber wheels arranged in the box body, and a heater arranged between two adjacent erbium fiber wheels, wherein the erbium fiber wheels are wound with erbium-doped fibers.
Wherein, the preferred scheme is: a temperature sensing module is arranged in the heat dissipation structure to detect the temperature in the box body.
Wherein, the preferred scheme is: the temperature sensing module comprises a first thermistor arranged on the heater and a second thermistor arranged on the erbium fiber wheel.
Wherein, the preferred scheme is: the erbium fiber wheels are of a double-layer structure, and the heater is arranged between the two erbium fiber wheels.
Wherein, the preferred scheme is: the heater is a heating film.
Wherein, the preferred scheme is: the heater is provided with a control module/input module, and the control module/input module is connected with the input end of the heater and penetrates through a notch of the erbium fiber wheel.
Wherein, the preferred scheme is: the heater is attached to the erbium-doped fiber wheels arranged on the two side faces of the heater, fixing holes communicated with each other are formed in the heater, the heater and the erbium-doped fiber wheels are fixed through the fixing holes through an independent fixing rod, or the heater and the erbium-doped fiber wheels are fixed through the fixing holes through the fixing rod arranged on the shell.
The erbium-doped fiber is preferably L-Band erbium-doped fiber.
The utility model provides a technical scheme that its technical problem adopted is: the erbium-doped fiber laser device comprises a shell, an erbium-doped fiber laser, an erbium-doped fiber and a heat dissipation structure, wherein the erbium-doped fiber laser, the erbium-doped fiber and the heat dissipation structure are arranged in the shell, and an air duct opening of a box body is arranged on an air duct path in the shell.
The utility model provides a technical scheme that its technical problem adopted is: the erbium-doped fiber laser system comprises an erbium-doped fiber laser device and a temperature control system, wherein the temperature control system controls a heater to stop working according to the fact that the temperature in a heat dissipation structure exceeds a preset value.
The beneficial effects of the utility model reside in that, compared with the prior art, the utility model discloses a maintain erbium-doped fiber's temperature, reduce the change of gain slope, the reliability of optic fibre coating obtains guaranteeing to and, because L-Band erbium-doped fiber amplifier internal temperature, whole machine consumption all have great range to reduce, effectively improve system frame ambient temperature, communication system can support amplifier work at higher output, reach extension transmission distance, system expansion purpose.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural view of the heat dissipation structure of the present invention;
FIG. 2 is a schematic structural view of the base of the present invention;
fig. 3 is a schematic diagram of the explosion structure of the erbium fiber wheel and the heater of the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the present invention provides a preferred embodiment of a heat dissipation structure of an erbium-doped fiber amplifier.
A heat dissipation structure of an erbium-doped fiber amplifier comprises a box body 100 with a wind channel opening 111, a plurality of layers of erbium fiber wheels arranged in the box body 100, and a heater 230 arranged between two adjacent erbium fiber wheels, wherein the erbium fiber wheels wind erbium-doped fibers.
Specifically, the erbium-doped fiber amplifier is matched with a watt-level high-power pump laser, so that the heating condition of the erbium-doped fiber is severe, the heat dissipation structure of the erbium-doped fiber amplifier needs to be adopted to dissipate heat of the erbium-doped fiber amplifier, and the problem of out-of-control heating is solved. First, the erbium-doped fiber amplifier is disposed in the box 100, the box 100 has a wind channel opening 111, and is disposed on the wind channel path of the whole erbium-doped fiber laser device, so that air enters the box 100 from the wind channel opening 111 and carries away heat, and preferably, the wind channel openings 111 are disposed on both sides of the box 100. The box body 100 comprises a base 120 and a top cover 110, wherein the top cover 110 covers the base 120 and is provided with a cavity for placing the erbium fiber wheel and the heater 230 and an air duct opening 111 communicated with the cavity; the top cover 110 is further provided with heat dissipation fins to increase the overall heat dissipation efficiency.
And the saturation of the erbium-doped fiber is reduced through the multilayer erbium-doped fiber wheel arranged close to the air duct opening 111, so that the heat accumulation of the heat generated by the erbium-doped fiber is reduced, and meanwhile, the contact area of the erbium-doped fiber and the air is increased through the multilayer erbium-doped fiber wheel, so that the heat dissipation of the erbium-doped fiber is faster in the case of wind speed.
And the heater 230 between two adjacent erbium fiber wheels, thereby increasing the heating efficiency of the heater 230, facilitating the heating of the erbium fiber wheels, and emergency stopping of the heater 230 in case of abnormality, reducing power consumption, and improving heat dissipation performance.
And the erbium-doped fiber is preferably L-Band erbium-doped fiber, so that the pumping amplification efficiency is improved, more pumping light energy is used for signal light amplification, less energy is converted into light energy and heat energy, and the heat productivity of the L-Band erbium-doped fiber is reduced.
Under the conditions of high-temperature application environment and large signal light power (>26dBm) output, the L-Band erbium-doped fiber can control the temperature of L-Band erbium-doped fiber to be reduced from 90-100 ℃ to about 70 ℃, the gain slope is reduced from 2.0dB to less than 0.3dB variable quantity, and the temperature of L-Band erbium-doped fiber is reduced to less than 85 ℃, the reliability of a fiber coating layer is ensured.
In this embodiment, a temperature sensing module is disposed in the heat dissipation structure to detect the temperature in the box 100. Preferably, the temperature sensing module comprises a first thermistor disposed on the heater 230, and a second thermistor disposed on the erbium wheel. The temperature in the box body 100 is obtained to perform real-time monitoring, particularly, the temperature is difficult to control when the temperature is lost, and the heater 230 is controlled to stop working through software, even the laser is controlled to stop working, so that the temperature is controlled to solve the problem of overheating.
In this embodiment, the erbium fiber wheels have a double-layer structure, and the heater 230 is disposed between the two erbium fiber wheels. The erbium-doped fiber heat dissipation device is compact in structure, can improve the contact area of the erbium-doped fiber and air, enables the erbium-doped fiber to dissipate heat more quickly in the case of wind speed, can control the heater 230 to achieve integral heating, and is convenient to control and design. Specifically, the first erbium fiber wheel 210, the heater 230, and the second erbium fiber wheel 220 are disposed in an overlapping manner.
In this embodiment, the heater 230 is a heating film.
After the heating film stops working, the heat source in the box body 100 is only the system environment temperature and the L-Band erbium-doped fiber heats itself, the multi-layer erbium-doped fiber wheel increases the contact area of the erbium-doped fiber and the air, so that the heat dissipation is faster in the case of wind speed, a large amount of heat in the module is brought to the outside along the wind speed direction of the system along the wind channel opening 111 to realize good heat dissipation, and at the moment, the L-Band erbium-doped fiber can be maintained at a relatively low and constant temperature, so that the gain slope of signal light is ensured to be normal.
In this embodiment, the heater 230 is provided with a control module/input module 234, and the control module/input module 234 is connected to the input end of the heater 230 and is disposed through the notch 211 of the first erbium fiber wheel 210. So that the input terminal of the heater 230 is connected to the outside, controlled by the outside, and has a simpler structure and is easily installed.
And the heater 230 is attached to the erbium-doped fiber wheels (the first erbium-doped fiber wheel 210 and the second erbium-doped fiber wheel 220) disposed on both sides of the heater 230, and has fixing holes (212, 222 and 232) communicated with each other, and the heater 230 and the erbium-doped fiber wheels are fixed by an independent fixing rod passing through the fixing holes, or the heater 230 and the erbium-doped fiber wheels are fixed by a fixing rod disposed on the housing passing through the fixing holes. Of course, the mounting plate 121 may be disposed in the housing, and the mounting plate 121 may be disposed with a shape structure formed by stacking the heater 230 and the erbium doped fiber, so as to facilitate fixing.
The heater 230 is provided with a mounting plate 233 on which the control module/input module 234 is mounted, and the mounting plate 233 is provided with a hole 2331 at a position matching the hole 213 of the first erbium fiber wheel 210. And, the second erbium fiber wheel 220 is provided with a notch 221, which is matched with the notch 231 of the heater 230, so as to improve the heat dissipation efficiency.
In the present invention, a preferred embodiment of an erbium-doped fiber laser device is provided.
An erbium-doped fiber laser device comprises a shell, an erbium-doped fiber laser, an erbium-doped fiber and a heat dissipation structure, wherein the erbium-doped fiber laser, the erbium-doped fiber and the heat dissipation structure are arranged in the shell, and an air duct opening 111 of a box body 100 is arranged on an air duct path in the shell. Specifically, air circulates through the air passage path, enters the case 100 from the air passage opening 111, and carries away heat, preferably by a fan.
In the present invention, a preferred embodiment of an erbium doped fiber laser system is provided.
An erbium-doped fiber laser system comprises an erbium-doped fiber laser device and a temperature control system, wherein the temperature control system controls a heater 230 to stop working according to the condition that the temperature in a heat dissipation structure exceeds a preset value. The temperature in the box body 100 is obtained to monitor in real time, particularly, the temperature is difficult to control when the temperature is lost, and the heater 230 is controlled to stop working through software, even the laser is controlled to stop working, so that the temperature is controlled to solve the problem of overheating; of course, the heating temperature is too low, and heating by the heater 230 is performed to achieve the temperature at the optimum operating temperature.
The temperature control system can be realized by a logic circuit chip or a chip with simple identification and comparison programs, which belong to the common knowledge in the field, and the temperature control system is not improved by software and depends on the setting of hardware.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is intended to cover all equivalent changes and modifications made within the scope of the present invention.
Claims (10)
1. A heat radiation structure of an erbium-doped fiber amplifier is characterized in that: the heat dissipation structure comprises a box body with an air duct opening, a plurality of layers of erbium fiber wheels arranged in the box body, and a heater arranged between two adjacent erbium fiber wheels, wherein the erbium fiber wheels are wound with erbium-doped fibers.
2. The heat dissipation structure according to claim 1, wherein: a temperature sensing module is arranged in the heat dissipation structure to detect the temperature in the box body.
3. The heat dissipation structure according to claim 2, wherein: the temperature sensing module comprises a first thermistor arranged on the heater and a second thermistor arranged on the erbium fiber wheel.
4. The heat dissipation structure according to claim 1, wherein: the erbium fiber wheels are of a double-layer structure, and the heater is arranged between the two erbium fiber wheels.
5. The heat dissipation structure according to claim 1, wherein: the heater is a heating film.
6. The heat dissipation structure according to claim 1 or 5, wherein: the heater is provided with a control module/input module, and the control module/input module is connected with the input end of the heater and penetrates through a notch of the erbium fiber wheel.
7. The heat dissipation structure according to claim 1, wherein: the heater is attached to the erbium-doped fiber wheels arranged on the two side faces of the heater, fixing holes communicated with each other are formed in the heater, the heater and the erbium-doped fiber wheels are fixed through the fixing holes through an independent fixing rod, or the heater and the erbium-doped fiber wheels are fixed through the fixing holes through the fixing rod arranged on the shell.
8. The heat dissipation structure of claim 1, wherein the erbium-doped fiber is L-Band erbium-doped fiber.
9. An erbium-doped fiber laser device characterized in that: the erbium-doped fiber laser device comprises a shell, and an erbium-doped fiber laser, an erbium-doped fiber and a heat dissipation structure as claimed in any one of claims 1 to 8 which are arranged in the shell, wherein an air duct opening of the box body is arranged on an air duct path in the shell.
10. An erbium-doped fiber laser system, characterized by: the erbium-doped fiber laser system comprises the erbium-doped fiber laser device as claimed in claim 9 and a temperature control system, wherein the temperature control system controls the heater to stop working according to the fact that the temperature in the heat dissipation structure exceeds a preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922256693.1U CN211063040U (en) | 2019-12-16 | 2019-12-16 | Heat dissipation structure of erbium-doped fiber amplifier, erbium-doped fiber laser device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922256693.1U CN211063040U (en) | 2019-12-16 | 2019-12-16 | Heat dissipation structure of erbium-doped fiber amplifier, erbium-doped fiber laser device and system |
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| Publication Number | Publication Date |
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| CN211063040U true CN211063040U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922256693.1U Active CN211063040U (en) | 2019-12-16 | 2019-12-16 | Heat dissipation structure of erbium-doped fiber amplifier, erbium-doped fiber laser device and system |
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| CN (1) | CN211063040U (en) |
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Address after: 518000 No. 35, Cuijing Road, Pingshan New District, Shenzhen, Guangdong Patentee after: Ona Technology (Shenzhen) Group Co.,Ltd. Address before: No.35 Cuijing Road, Pingshan District, Shenzhen City, Guangdong Province Patentee before: O-NET COMMUNICATIONS (SHENZHEN) Ltd. |
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