Temperature control device of optical fiber and optical communication system

Abstract

The utility model relates to the technical field of optical fiber temperature control, and relates to an optical fiber temperature control device and an optical communication system. The device comprises a temperature box body, a temperature detection module, a thermoelectric refrigeration module, a control module and a heat dissipation support, wherein the control module is connected with the temperature detection module and the thermoelectric refrigeration module; an optical fiber is placed in the thermal insulation box body, and the thermal insulation box body is provided with an input port and an output port for the optical fiber to pass through; the temperature detection module is used for detecting the temperature value of the optical fiber and transmitting the temperature value to the control module; the two thermoelectric ends of the thermoelectric refrigeration module are attached to the heat preservation box body and the heat dissipation support respectively. The temperature detection module, the thermoelectric refrigeration module, the control module and the heat preservation box body are all installed in the heat dissipation support. The control module is used for comparing the temperature value with a preset value and controlling the thermoelectric refrigeration module to start refrigeration or heating according to a comparison result. Bidirectional temperature control of the optical fiber in the heat preservation box body can be achieved, the optical fiber heat preservation box can adapt to a wide environment temperature range, and the response speed is high.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber temperature control technology, and in particular to an optical fiber temperature control device and an optical communication system. Background Technology

[0002] The performance of erbium-doped fiber is significantly affected by temperature. Low temperatures lead to a decrease in gain efficiency, while high temperatures exacerbate spontaneous emission noise. The operation of other types of fiber is also affected by temperature.

[0003] Therefore, optical fiber temperature is typically controlled in optical communication systems. Traditionally, fiber temperature is controlled by using a single heating film or a heat dissipation pad to heat or cool the fiber, maintaining it at a suitable temperature. However, traditional fiber temperature control methods can only achieve heating or minimal auxiliary cooling, and cannot adapt to a wide range of ambient temperatures. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a temperature control device for optical fiber and an optical communication system, so as to solve the problem that the temperature control device for optical fiber in the prior art cannot adapt to a wide range of ambient temperatures and has poor temperature stability.

[0005] This utility model discloses a temperature control device for optical fibers, including an insulation box, a temperature detection module, a thermoelectric cooling module, a control module, and a heat dissipation bracket. The control module is connected to the temperature detection module and the thermoelectric cooling module.

[0006] The insulated box is used to house optical fibers, and the insulated box is provided with an input port and an output port for the optical fibers to pass through.

[0007] The temperature detection module is used to detect the temperature value of the optical fiber and transmit the temperature value to the control module;

[0008] The two thermoelectric terminals of the thermoelectric cooling module are respectively attached to the heat insulation box and the heat dissipation bracket;

[0009] The temperature detection module, thermoelectric cooling module, control module, and insulation box are all installed inside the heat dissipation bracket;

[0010] The control module is used to compare the temperature value with a preset value, and control the thermoelectric cooling module to start cooling or heating based on the comparison result.

[0011] Optionally, the heat-insulating box body includes a heat-insulating top cover and a heat-conducting base. The heat-conducting base is provided with an optical fiber disk for winding optical fibers. The heat-insulating top cover is provided with a receiving cavity, an input port, and an output port. The heat-conducting base is fitted into the receiving cavity. One thermoelectric end of the thermoelectric cooling module is attached to the side of the heat-conducting base facing away from the heat-insulating top cover.

[0012] Optionally, the heat-insulating top cover is provided with a plurality of first fixing holes, and the heat-conducting base is provided with a plurality of second fixing holes. The plurality of first fixing holes and the plurality of second fixing holes are provided one-to-one. The temperature control device further includes a plurality of first locking members. Each second locking member is provided with one first fixing hole and one second fixing hole respectively, so as to fix the heat-insulating top cover on the heat-conducting base.

[0013] Optionally, the fiber optic disc includes a limiting end face, and a limiting protrusion is provided on the limiting end face. The heat insulation cover is provided with a limiting hole that matches the limiting protrusion. When the heat-conducting base is fitted into the accommodating cavity, the limiting protrusion passes through the limiting hole, and the limiting end face abuts against the inner wall of the heat insulation cover.

[0014] Optionally, a first heat-conducting layer is provided between the heat-insulating box and a thermoelectric terminal of the thermoelectric cooling module.

[0015] Optionally, the heat dissipation bracket is provided with a heat dissipation protrusion, and the heat dissipation protrusion and the other thermoelectric end of the thermoelectric cooling module are provided with a second heat-conducting layer.

[0016] Optionally, the heat dissipation bracket is provided with a receiving cavity, and the temperature control device further includes a circuit board installed in the receiving cavity. The control module and the temperature detection module are integrated on the circuit board. The heat insulation box and the heat dissipation protrusion are located on the front and back of the circuit board, respectively. The circuit board is provided with a heat dissipation window, and the heat dissipation window corresponds to the position of the thermoelectric cooling module and the heat dissipation protrusion.

[0017] Optionally, the circuit board is provided with multiple fixing posts, the heat preservation box body is provided with multiple third fixing holes, and the temperature control device further includes multiple second locking members. Each second locking member is provided with a corresponding third fixing hole and extends into a fixing post to fix the heat preservation box body on the circuit board.

[0018] Optionally, heat dissipation fins are provided on the outer side of the heat dissipation bracket.

[0019] This utility model also discloses an optical communication system, including an optical fiber and a temperature control device for the optical fiber as described above. The optical fiber is disposed inside the insulation box, and the two ends of the optical fiber pass through the input port and output port of the insulation box, respectively.

[0020] Compared with the prior art, the beneficial effects of the optical fiber temperature control device and optical communication system provided in this utility model embodiment are as follows: By setting a temperature detection module, a thermoelectric cooling module, a control module, and an insulation box inside the heat dissipation bracket, the optical fiber can be placed inside the insulation box. The two ends of the optical fiber can be respectively passed through the input port and output port on the insulation box and connected to other components of the optical communication system. The temperature detection module can detect the temperature value of the optical fiber placed inside the insulation box and transmit the temperature value to the control module. The control module compares the received temperature value with a preset value and controls the thermoelectric cooling module to drive cooling or heating according to the comparison result, thereby cooling or heating the insulation box and the optical fiber. The heat of the insulation box can be dissipated through the heat dissipation bracket, realizing bidirectional temperature control of the optical fiber inside the insulation box. It can adapt to a wide range of ambient temperatures, has high temperature stability, and the thermoelectric cooling module combined with the heat dissipation bracket has a fast response speed. Attached Figure Description

[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0022] Figure 1 This is a three-dimensional structural diagram of the optical fiber temperature control device provided in this embodiment of the utility model;

[0023] Figure 2 for Figure 1 A three-dimensional structural diagram of the temperature control device for the optical fiber shown from another angle.

[0024] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0025] Figure 4 This is a three-dimensional structural diagram of the cavity containing the heat dissipation bracket on the circuit board provided in this embodiment of the utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the insulated box body fitting the thermoelectric refrigeration module according to an embodiment of the present utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the insulated box body fitting the thermoelectric refrigeration module from another angle, according to an embodiment of the present utility model.

[0028] Figure 7 yes Figure 5A schematic diagram of the exploded structure;

[0029] Figure 8 This is a three-dimensional structural diagram of the heat-insulating top cover provided in this embodiment of the utility model.

[0030] The labels for the attached figures are as follows:

[0031] 10. Insulated box body; 10a. Input port; 10b. Output port; 10c. Third fixing hole; 11. Insulated top cover; 11a. Receiving cavity; 11b. First fixing hole; 11c. Limiting hole; 12. Heat-conducting base; 12a. Second fixing hole; 121. Fiber optic disc; 1211. Limiting end face; 1212. Limiting protrusion; 20. Thermoelectric cooling module; 30. Heat dissipation bracket; 30a. Receiving cavity; 31. Heat dissipation boss; 32. Heat dissipation fins; 40. Circuit board; 40a. Heat dissipation window; 41. Fixing post. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0033] This utility model provides a temperature control device for optical fibers, which can control the temperature of optical fibers, especially erbium-doped optical fibers. Erbium-doped optical fibers are significantly affected by temperature. By controlling the temperature of erbium-doped optical fibers, the erbium-doped optical fibers can be kept operating within the optimal operating temperature range, thereby improving the stability and performance of erbium-doped optical fibers and the optical communication systems in which they are used.

[0034] like Figure 1 and Figure 3 As shown, the temperature control device for optical fiber includes an insulation box 10, a temperature detection module, a thermoelectric cooling module 20, a control module, and a heat dissipation bracket 30. The control module is connected to the temperature detection module and the thermoelectric cooling module 20.

[0035] The insulation box 10 is used to house optical fibers. The insulation box 10 is provided with an input port 10a and an output port 10b for the optical fibers to pass through. The two ends of the optical fibers inside the insulation box can pass through the input port 10a and the output port 10b respectively, and connect to other components of the applied optical communication system.

[0036] The temperature detection module is used to detect the temperature value of the optical fiber and transmit the temperature value to the control module.

[0037] The two thermoelectric terminals of the thermoelectric cooling module 20 are respectively attached to the insulation box 10 and the heat dissipation bracket 30.

[0038] The temperature detection module, thermoelectric cooling module 20, control module, and insulation box 10 are all installed inside the heat dissipation bracket 30. In addition to dissipating heat, the heat dissipation bracket 30 also provides a supporting carrier for the temperature detection module, thermoelectric cooling module 20, control module, and insulation box 10, facilitating the movement and use of the entire temperature control device.

[0039] The control module is used to compare the temperature value with the preset value and control the thermoelectric cooling module 20 to start cooling or heating based on the comparison result.

[0040] The optical fiber temperature control device of this embodiment comprises a temperature detection module, a thermoelectric cooling module 20, a control module, and an insulation box 10 arranged within a heat dissipation bracket 30. An optical fiber can be placed inside the insulation box, with its two ends passing through an input port 10a and an output port 10b on the insulation box 10, respectively, for connection to other components of the optical communication system. The temperature detection module detects the temperature value of the optical fiber placed inside the insulation box 10 and transmits the temperature value to the control module. The control module compares the received temperature value with a preset value and, based on the comparison result, controls the thermoelectric cooling module 20 to drive cooling or heating, thereby cooling or heating the insulation box 10 and consequently the optical fiber. The heat from the insulation box 10 can be dissipated through the heat dissipation bracket 30, achieving bidirectional temperature control of the optical fiber within the insulation box 10. This device can adapt to a wide ambient temperature range, exhibits high temperature stability, and the thermoelectric cooling module 20, combined with the heat dissipation bracket 30, provides a fast response speed, ensuring the optical fiber operates within a suitable temperature range.

[0041] The thermoelectric cooler (TEC) module has both cooling and heating functions. Its working principle is based on the Peltier effect: when a direct current passes through a thermocouple composed of P-type and N-type semiconductor materials, one end absorbs heat, and the other end releases heat. By changing the direction of the current, the hot and cold ends can be switched. When the current is in the forward direction, the thermoelectric end of the thermoelectric cooler module 20 transfers heat to the insulation box 10; when the current is in the reverse direction, the thermoelectric end of the thermoelectric cooler module 20 absorbs heat from the insulation box and dissipates heat outwards, thus achieving both cooling and heating functions. The combination of the thermoelectric cooler module 20 and the heat dissipation bracket 30 enables heating of the optical fiber in low-temperature environments and heat dissipation in high-temperature environments, ensuring the operational stability of the optical fiber and its application in optical communication systems. Specifically, when the temperature detection module detects that the temperature of the optical fiber is higher than a preset value, the control module controls the thermoelectric cooler module 20 to activate the cooling function; when the temperature detection module detects that the temperature of the optical fiber is lower than the preset value, the control module controls the thermoelectric cooler module 20 to activate the heating function.

[0042] The control module can use an existing control chip to compare the detected temperature value with a preset value, and control the thermoelectric cooling module 20 to start cooling or heating based on the comparison result. Alternatively, it can use a comparator circuit to compare the temperature value with the preset value and output a high-level signal or a low-level signal, and control the thermoelectric cooling module 20 to start cooling or heating based on the level signal.

[0043] In an optional embodiment of this application, the temperature detection module can employ a temperature sensor, such as a thermistor. The thermistor is fixed to an optical fiber, and the temperature of the optical fiber is calculated by measuring its resistance value and applying its resistance-temperature characteristic formula. Thermistors have a fast response speed and small size, which is beneficial for the miniaturization of the overall device.

[0044] refer to Figure 3 , Figures 5 to 8 In an optional embodiment of this application, the heat insulation box 10 includes a heat insulation cover 11 and a heat-conducting base 12. An optical fiber disk 121 is provided inside the heat-conducting base 12 for winding optical fibers. The heat insulation cover 11 is provided with a receiving cavity 11a, an input port 10a, and an output port 10b. The heat-conducting base 12 is fitted into the receiving cavity 11a. One thermoelectric end of the thermoelectric cooling module 20 is attached to the side of the heat-conducting base 12 facing away from the heat insulation cover 11.

[0045] The heat-conducting base 12 can quickly conduct heat to the thermoelectric cooling module 20, which achieves rapid cooling through the Peltier effect. The heat dissipation bracket 30 also dissipates heat, enabling rapid heat dissipation of the optical fiber inside the insulation box 10. Furthermore, when the thermoelectric cooling module 20 starts heating, it evenly conducts the heat generated by the module to the insulation box 10, heating or cooling the optical fiber to ensure it operates within a suitable temperature range. The heat-insulating cover 11 can insulate the interior of the insulation box 10 while the optical fiber temperature is low and the thermoelectric cooling module 20 is heating the box, effectively isolating the optical fiber from the influence of external ambient temperature. The heat-conducting base 12 is embedded in the receiving cavity 11a of the heat-insulating cover 11. Both ends of the optical fiber can pass through the input port 10a and output port 10b on the heat-insulating cover 11 to connect with other components of the optical communication system. The insulation box 10 has a compact structure, and the double-layer structure formed by the heat-conducting base 12 and the heat-insulating cover 11 effectively dissipates heat and insulates the optical fiber. The fiber optic disc 121 inside the heat-conducting base 12 can coil the fiber optic cable, preventing the fiber optic cable from being piled up haphazardly, preventing the fiber optic cable from being damaged due to excessive bending, stretching or squeezing, and reducing the risk of fiber optic cable damage.

[0046] Optionally, the heat-conducting base 12 can be made of a high-efficiency heat-conducting material, and the optical fiber disk 121 on the heat-conducting base 12 is coiled to hold the optical fiber. The heat-insulating cover 11 can be made of a high-efficiency heat-insulating material, which has a good heat preservation effect.

[0047] In an optional embodiment of this application, reference is made to Figure 7 The heat-insulating top cover 11 is provided with a plurality of first fixing holes 11b, and the heat-conducting base 12 is provided with a plurality of second fixing holes 12a. The plurality of first fixing holes 11b and the plurality of second fixing holes 12a are provided one-to-one. The temperature control device also includes a plurality of first locking members (not shown in the figure). Each second locking member is provided with one first fixing hole 11b and one second fixing hole 12a respectively, so as to fix the heat-insulating top cover 11 on the heat-conducting base 12.

[0048] By correspondingly setting the first fixing hole 11b and the second fixing hole 12a, and fixing them with the first locking member, the heat insulation cover 11 and the heat-conducting base 12 can be tightly fitted, improving the stability of the overall structure. The tight fit between the heat insulation cover 11 and the heat-conducting base 12 can effectively isolate the influence of the external ambient temperature on the optical fiber inside the heat insulation box 10, while ensuring efficient heat exchange between the heat-conducting base 12 and the thermoelectric cooling module 20, improving the accuracy of temperature control.

[0049] The number of first fixing holes 11b can be two, three, or more, the number of corresponding second fixing holes 12a can be two, three, or more, and the number of first locking elements can be two, three, or more. Designers can set these according to actual needs. For example, three first fixing holes 11b, three second fixing holes 12a, and three first locking elements are provided.

[0050] In the optional embodiments of this application, reference continues to be made to Figure 7 The fiber optic tray 121 includes a limiting end face 1211, and a limiting protrusion 1212 is provided on the limiting end face 1211. The heat insulation cover 11 is provided with a limiting hole 11c that matches the limiting protrusion 1212. When the heat-conducting base 12 is fitted into the accommodating cavity 11a, the limiting protrusion 1212 passes through the limiting hole 11c, and the limiting end face 1211 abuts against the inner wall of the heat insulation cover 11.

[0051] By providing a limiting protrusion 1212 on the limiting end face 1211 of the fiber optic disc 121, and matching the limiting hole 11c on the heat insulation cover 11 with the limiting protrusion 1212, the heat insulation cover 11 and the heat-conducting base 12 can be positioned to prevent displacement of the heat insulation cover 11 and the heat-conducting base 12 during use, ensuring the stability of the fiber optic disc 121 and the stability of the wound fiber optic cable. During the assembly of the insulation box 10, the operator fits the heat-conducting base 12 into the receiving cavity 11a of the heat insulation cover 11. The limiting protrusion 1212 on the fiber optic disc 121 passes through the limiting hole 11c of the heat insulation cover 11 until the limiting end face 1211 abuts against the inner wall of the heat insulation cover 11, thus installing the heat-conducting base 12 on the heat insulation cover 11.

[0052] In an optional embodiment of this application, a first heat-conducting layer (not shown) is provided between the heat-insulating box 10 and a thermoelectric terminal of the thermoelectric cooling module 20.

[0053] By setting the first heat-conducting layer, the heat or cold generated by the thermoelectric cooling module 20 can be uniformly conducted to the optical fiber inside the insulation box 10, avoiding local overheating or overcooling, ensuring uniform temperature control, effectively filling the tiny gap between the insulation box 10 and the thermoelectric cooling module 20, reducing contact thermal resistance, and thus improving heat conduction efficiency.

[0054] In practice, the first thermally conductive layer can be a carrier made of thermally conductive materials, such as thermally conductive adhesive or thermally conductive pad, to improve heat conduction efficiency.

[0055] Further, refer to Figure 3 and Figure 4 The heat dissipation bracket 30 is provided with a heat dissipation protrusion 31, and the heat dissipation protrusion 31 and the other thermoelectric end of the thermoelectric cooling module 20 are provided with a second heat-conducting layer (not shown in the figure).

[0056] The heat dissipation protrusion 31, through its own shape and the action of the second thermally conductive layer, ensures reliable contact between the hot end of the thermoelectric cooling module 20 and the heat dissipation bracket 30, thereby improving the heat dissipation effect. Furthermore, the second thermally conductive layer further reduces contact thermal resistance, allowing heat to be transferred more efficiently from the thermoelectric cooling module 20 to the heat dissipation bracket 30.

[0057] Optionally, the second thermally conductive layer can be a carrier made of thermally conductive materials, such as thermally conductive adhesive or thermally conductive pad, to improve heat transfer efficiency.

[0058] Further, refer to Figure 2 The heat sink bracket 30 has heat dissipation fins 32 on its outer side. The heat dissipation fins 32 can increase the contact area between the heat sink and the air, which can quickly disperse heat into the air and further improve heat dissipation efficiency through natural convection.

[0059] Alternatively, the heat dissipation fins 32 can be made of lightweight materials (such as aluminum or copper), which not only provides good heat dissipation but also reduces the overall weight, while improving corrosion resistance and service life through surface treatments (such as anodizing).

[0060] refer to Figure 1 , Figure 3 and Figure 4In an optional embodiment of this application, the heat dissipation bracket 30 is provided with a receiving cavity 30a, and the temperature control device also includes a circuit board 40 installed in the receiving cavity 30a. The control module and the temperature detection module are integrated on the circuit board 40. The heat insulation box 10 and the heat dissipation protrusion 31 are located on the front and back of the circuit board 40, respectively. The circuit board 40 is provided with a heat dissipation window 40a, which corresponds to the positions of the thermoelectric cooling module 20 and the heat dissipation protrusion 31.

[0061] By integrating the control module and temperature detection module onto the circuit board 40, and mounting the circuit board 40 within the receiving cavity 30a of the heat sink bracket 30, this design significantly reduces the overall size of the system, making the entire temperature control device more compact. The heat dissipation window 40a allows heat from the thermoelectric cooling module 20 to be transferred to the heat dissipation boss 31, reducing thermal resistance along the heat transfer path. The combination of the heat dissipation boss 31 and the heat dissipation window 40a more effectively conducts heat from the circuit board 40 to the heat sink bracket 30, preventing heat accumulation on the circuit board 40 and thus improving the overall heat dissipation efficiency of the device. Furthermore, because the temperature detection module and control module are integrated onto the same circuit board 40, the signal transmission path is short, enabling the system to respond to temperature changes more quickly and achieve more efficient temperature regulation.

[0062] refer to Figure 4 and Figure 5 In an optional embodiment of this application, the circuit board 40 is provided with multiple fixing posts 41, the heat preservation box 10 is provided with multiple third fixing holes 10c, and the temperature control device also includes multiple second locking members. Each second locking member is provided with a corresponding third fixing hole 10c and extends into a fixing post 41 to fix the heat preservation box 10 on the circuit board 40.

[0063] The combination of the fixing post 41 and the locking element securely fixes the insulation box 10 to the circuit board 40, preventing the insulation box 10 from loosening or shifting due to vibration or external force, and ensuring that the circuit board 40 and the insulation box 10 remain relatively fixed during operation. The circuit board 40 and the insulation box 10 are fixed together by the cooperation of the second locking element, the fixing post 41, and the third fixing hole 10c. The installation and disassembly process is simple and quick, requiring no complicated tools or processes, making operation very convenient and reducing maintenance costs.

[0064] The number of fixing posts 41 can be two, three, or more. The number of corresponding third fixing holes 10c can also be two, three, or more, and the number of second locking members can be two, three, or more. For example, the circuit board 40 is provided with three fixing posts 41, the insulation box body 10 is provided with three third fixing holes 10c, and three second locking members are provided. When the insulation box body 10 includes the aforementioned heat-conducting base 12 and heat-insulating cover 11, both the heat-conducting base 12 and the heat-insulating cover 11 are provided with third positioning holes.

[0065] This application embodiment also provides an optical communication system, including an optical fiber and a temperature control device for the optical fiber as described above. The optical fiber is disposed inside an insulation box 10, and its two ends pass through the input port 10a and the output port 10b of the insulation box 10, respectively.

[0066] In this embodiment, the optical fiber temperature control device in the optical communication system comprises a temperature detection module, a thermoelectric cooling module 20, a control module, and an insulation box 10, all housed within a heat dissipation bracket 30. The insulation box contains an optical fiber, with its two ends passing through an input port 10a and an output port 10b on the insulation box 10, respectively, connecting to other components of the optical communication system. The temperature detection module detects the temperature of the optical fiber placed within the insulation box 10 and transmits this temperature value to the control module. The control module compares the received temperature value with a preset value and, based on the comparison result, controls the thermoelectric cooling module 20 to drive cooling or heating, thereby cooling or heating the insulation box 10 and consequently the optical fiber. The heat from the insulation box 10 is dissipated through the heat dissipation bracket 30, achieving bidirectional temperature control of the optical fiber within the insulation box 10. This device is adaptable to a wide ambient temperature range, exhibits high temperature stability, and, combined with the heat dissipation bracket 30, provides a fast response speed.

[0067] Optical fibers can be erbium-doped fibers, polarization-maintaining fibers, etc. Temperature control devices can effectively control the temperature of optical fibers, so that the optical fibers can operate at a suitable temperature.

[0068] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A temperature control device for optical fibers, characterized in that, It includes an insulated box body, a temperature detection module, a thermoelectric cooling module, a control module, and a heat dissipation bracket. The control module is connected to the temperature detection module and the thermoelectric cooling module. The insulated box is used to house optical fibers, and the insulated box is provided with an input port and an output port for the optical fibers to pass through. The temperature detection module is used to detect the temperature value of the optical fiber and transmit the temperature value to the control module; The two thermoelectric terminals of the thermoelectric cooling module are respectively attached to the heat insulation box and the heat dissipation bracket; The temperature detection module, thermoelectric cooling module, control module, and insulation box are all installed inside the heat dissipation bracket; The control module is used to compare the temperature value with a preset value, and control the thermoelectric cooling module to start cooling or heating based on the comparison result.

2. The temperature control device for optical fiber according to claim 1, characterized in that, The heat-insulating box includes a heat-insulating top cover and a heat-conducting base. An optical fiber disk is provided inside the heat-conducting base for winding optical fibers. The heat-insulating top cover is provided with a receiving cavity, an input port, and an output port. The heat-conducting base is fitted into the receiving cavity. One thermoelectric end of the thermoelectric cooling module is attached to the side of the heat-conducting base facing away from the heat-insulating top cover.

3. The temperature control device for optical fiber according to claim 2, characterized in that, The heat-insulating top cover is provided with a plurality of first fixing holes, and the heat-conducting base is provided with a plurality of second fixing holes. The plurality of first fixing holes and the plurality of second fixing holes are provided one-to-one. The temperature control device also includes a plurality of first locking members. Each second locking member is provided with one first fixing hole and one second fixing hole respectively, so as to fix the heat-insulating top cover on the heat-conducting base.

4. The temperature control device for optical fiber according to claim 2, characterized in that, The fiber optic disc includes a limiting end face, on which a limiting protrusion is provided. The heat insulation cover is provided with a limiting hole that matches the limiting protrusion. When the heat-conducting base is fitted into the accommodating cavity, the limiting protrusion passes through the limiting hole, and the limiting end face abuts against the inner wall of the heat insulation cover.

5. The temperature control device for optical fiber according to claim 1, characterized in that, A first heat-conducting layer is provided between the heat-insulating box and one thermoelectric terminal of the thermoelectric cooling module.

6. The temperature control device for optical fiber according to any one of claims 1-5, characterized in that, The heat dissipation bracket is provided with a heat dissipation protrusion, and the heat dissipation protrusion and the other thermoelectric end of the thermoelectric cooling module are provided with a second heat-conducting layer.

7. The temperature control device for optical fiber according to claim 6, characterized in that, The heat dissipation bracket is provided with a receiving cavity, and the temperature control device also includes a circuit board installed in the receiving cavity. The control module and the temperature detection module are integrated on the circuit board. The heat insulation box and the heat dissipation protrusion are located on the front and back of the circuit board, respectively. The circuit board is provided with a heat dissipation window, and the heat dissipation window corresponds to the position of the thermoelectric cooling module and the heat dissipation protrusion.

8. The temperature control device for optical fiber according to claim 7, characterized in that, The circuit board is provided with multiple fixing posts, the heat preservation box body is provided with multiple third fixing holes, and the temperature control device also includes multiple second locking members. Each second locking member is provided with a corresponding third fixing hole and extends into a fixing post to fix the heat preservation box body on the circuit board.

9. The temperature control device for optical fiber according to claim 6, characterized in that, The heat dissipation bracket is provided with heat dissipation fins on its outer side.

10. An optical communication system, characterized in that, The device includes an optical fiber and a temperature control device for the optical fiber as described in any one of claims 1-9, wherein the optical fiber is disposed within the insulation box, and both ends of the optical fiber pass through the input port and output port of the insulation box, respectively.

Images