Optical fiber coupling device with high coupling efficiency

By using heat dissipation components in the optical fiber coupling device, the coupling efficiency reduction caused by poor heat dissipation during use of the optical fiber coupler is solved, efficient heat conduction and dissipation is achieved, and the fiber spacing is stable and the coupling efficiency is maintained.

CN222514657UActive Publication Date: 2025-02-21ANHUI PENGDA OPTOELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202421392499.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-18
Publication Date
2025-02-21
Estimated Expiration
2034-06-18

AI Technical Summary

Technical Problem

When used, the existing fiber optic couplers are not easily dispersed, resulting in temperature increase, thermal expansion and fiber spacing changes, thereby reducing coupling efficiency.

Method used

A high coupling efficiency fiber coupling device is designed, using heat dissipation components, including surrounding sheets, fins and extension sheets, made of copper. By expanding the contact area and increasing the heat exchange area, the heat of the fiber coupler is quickly conducted and emitting.

Benefits of technology

It effectively prevents the fiber coupler from thermal expansion due to excessive temperature, maintains the stability of the fiber spacing, improves the coupling efficiency, and ensures that the fiber coupler still maintains efficient coupling performance after long-term use.

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Abstract

The utility model relates to the technical field of optical fiber coupling devices, and particularly discloses an optical fiber coupling device with high coupling efficiency, which comprises a shell, an optical fiber coupler main body is arranged in the shell through a connecting assembly, the optical fiber coupler main body comprises a protective shell, and an optical fiber is fixedly wrapped in the protective shell. Heat dissipation assemblies are arranged on the two sides of a coupling part of the optical fiber, each heat dissipation assembly comprises a surrounding piece, the optical fiber penetrates through the space between the two surrounding pieces, a plurality of fins are fixedly connected to the outer ends of the surrounding pieces at equal intervals, the outer ends of the fins extend out of the protection shell, the shell comprises two shell bodies arranged up and down, and the shell bodies are connected with the heat dissipation assemblies. Grooves are formed in the two sides of the shell, and openings are formed in the bottoms of the grooves. According to the utility model, the heat dissipation assembly is arranged, so that the situation that the coupling efficiency is reduced due to thermal expansion of the optical fiber coupler caused by over-high temperature can be prevented, and the high coupling efficiency of the optical fiber coupler after long-time use can be ensured.
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Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber coupling devices, in particular to an optical fiber coupling device with high coupling efficiency. Background Art

[0002] Optical fiber is a thin cable used to transmit optical signals. It has the advantages of high bandwidth, low loss, anti-interference, light weight and small size. Optical fiber is widely used in the fields of communication, television signal transmission, security monitoring, medical treatment, etc. The optical fiber coupler is an optical device used to connect two or more optical fibers. Its main function is to distribute or combine the input optical signal between different optical fibers.

[0003] The efficiency of a fiber coupler refers to the transmission efficiency of an optical signal during the coupling process. It reflects the performance of the coupler in distributing the input optical signal to each output port. There are many factors that affect the efficiency of a fiber coupler, one of which is the fiber spacing in the coupling area. Increasing the spacing will increase the energy loss of light during transmission. The current fiber coupler structure is relatively closed, and the heat generated during use is not easy to dissipate. When the temperature rises, the device is prone to thermal expansion, resulting in changes in the fiber spacing, thereby affecting the coupling efficiency. Therefore, those skilled in the art provide a fiber coupling device with high coupling efficiency to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide an optical fiber coupling device with high coupling efficiency to solve the following technical problems:

[0005] How to solve the problem that the heat generated by the current optical fiber coupler is not easy to dissipate during use, and the internal components are prone to thermal expansion when the temperature rises, resulting in an increase in the optical fiber spacing and a decrease in coupling efficiency.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An optical fiber coupling device with high coupling efficiency comprises a housing, wherein an optical fiber coupler body is arranged inside the housing through a connecting component;

[0008] The optical fiber coupler body comprises a protective shell, the interior of the protective shell is fixedly coated with an optical fiber, and heat dissipation components are arranged on both sides of the coupling part of the optical fiber;

[0009] The heat dissipation assembly includes a surrounding sheet, the optical fiber passes through two surrounding sheets, the outer ends of the surrounding sheets are evenly and fixedly connected with a plurality of fins, and the outer ends of the fins extend out of the protective shell;

[0010] The shell comprises two upper and lower shells, both sides of the shells are provided with grooves, the bottom of the grooves is provided with openings, and the fins extend out of the openings.

[0011] Furthermore, multiple ends of the optical fiber are fixed with interfaces, the interfaces are clamped between the upper and lower shells, and the connecting part of the optical fiber and the protective shell is covered with a protective cover;

[0012] Furthermore, a plurality of extension pieces are fixedly connected to both sides of the plurality of fins located inside the protective shell, and the surrounding pieces, fins and extension pieces are all made of red copper;

[0013] Furthermore, two insertion rods are fixedly inserted at both upper and lower sides of the interior of the protective shell, and the insertion rods are close to the outer periphery of the arc surface of the surrounding piece;

[0014] Further, the connection assembly includes an upper connection part and a lower connection part, the upper connection part is connected to the upper shell, and the lower connection part is connected to the lower shell;

[0015] Furthermore, the upper connecting portion includes a connecting seat fixed to the upper end surface of the upper shell, and connecting screws are sleeved on both sides of the upper end surface of the connecting seat, and the lower ends of the connecting screws are in contact with the protective shell;

[0016] Further, the lower connecting portion includes two buckles fixed to the bottom of the lower shell, the buckles are engaged with the protective shell, and the upper ends of the buckles are provided with bevels;

[0017] Further, the portion of the fin extending out of the opening is lower than the outer edge plane of the groove;

[0018] Beneficial effects of the utility model:

[0019] The utility model is provided with a heat dissipation component. When the optical fiber coupler body is in use, the surrounding pieces, fins and extension pieces of the heat dissipation component have a large contact area with the protective shell, can quickly exchange heat, and efficiently conduct the heat of the optical fiber coupler body. A part of the fins extends out of the outer end of the protective shell, and can quickly dissipate heat into the air, thereby preventing the optical fiber coupler from thermally expanding due to excessive temperature, causing the spacing of the optical fiber coupling part to expand and reduce the coupling efficiency, and can ensure that the optical fiber coupler can still maintain a high coupling efficiency after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is the overall structure diagram of the utility model;

[0022] Figure 2 It is an exploded view of the utility model;

[0023] Figure 3 It is a structural diagram of the main body of the optical fiber coupler of the utility model;

[0024] Figure 4 It is a top cross-sectional view of the main body of the optical fiber coupler of the utility model;

[0025] Figure 5 It is a front cross-sectional view of the main body of the optical fiber coupler of the utility model.

[0026] Reference numerals:

[0027] 1. Shell; 11. Shell; 12. Groove; 13. Opening; 2. Fiber coupler body; 21. Protective shell; 22. Heat dissipation assembly; 221. Surrounding piece; 222. Fin; 223. Extension piece; 23. Fiber; 24. Interface; 25. Protective cover; 26. Insertion rod; 3. Connection assembly; 31. Upper connection part;

[0028] 311, connecting seat; 312, connecting screw; 32, lower connecting part; 321, buckle; 322, bevel. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Please see attached Figure 1 - Figure 5 As shown, the optical fiber coupling device with high coupling efficiency in the embodiment of the utility model comprises a housing 1, and an optical fiber coupler body 2 is arranged inside the housing 1 through a connecting component 3.

[0031] The outer shell 1 is used to protect the internal fiber coupler body 2 to prevent damage to the internal fiber coupler body 2, and also provides a connection position for the subsequently set interface 24. The connection component 3 is used to fix the fiber coupler body 2 so that it can be stably connected and fixed to the outer shell 1.

[0032] The fiber coupler body 2 includes a protective shell 21, and the interior of the protective shell 21 is fixedly covered with an optical fiber 23. Heat dissipation components 22 are provided on both sides of the coupling portion of the optical fiber 23. The heat dissipation components 22 are provided to dissipate the heat of the optical fiber 23 when it is working, thereby preventing thermal expansion due to excessive temperature, increasing the core spacing in the coupling area of ​​the optical fiber 23, resulting in a decrease in the optical fiber coupling efficiency, so that the temperature of the fiber coupler body 2 will not change too much after long-term use, thereby maintaining a high coupling efficiency.

[0033] The heat dissipation component 22 includes a surrounding sheet 221, and the optical fiber 23 passes through two surrounding sheets 221. The outer ends of the surrounding sheets 221 are evenly fixedly connected with multiple fins 222, and the outer ends of the fins 222 all extend out of the protective shell 21. The outer surrounding sheet 221 is set to an arc shape. The arc-shaped outer surrounding sheet 221 can fully surround the coupling area of ​​the optical fiber 23 and has a large heat exchange area. When heat occurs, the heat can be conducted to the fins 222 by the surrounding sheet 221, and a part of the fins 222 extends out of the protective shell 21, so that the outer end temperature of the fin 222 will be lower than the inner end temperature, and the heat is transmitted outward to dissipate heat. The sheet structure of the fin 222 has a large contact area with the air, which can efficiently dissipate heat and cool down.

[0034] The shell 1 includes two shells 11 arranged up and down, and grooves 12 are arranged on both sides of the shells 11. An opening 13 is opened at the bottom of the groove 12, and the fins 222 extend out of the openings 13. The openings 13 are set to reserve space so that the fins 222 can extend out and fully contact the outside air. The sheet structure of the fins 222 has a large contact area with the air and can quickly dissipate heat, thereby reducing the temperature of the protective shell 21 and preventing the internal temperature of the protective shell 21 from being too high and affecting the coupling efficiency.

[0035] Multiple ends of the optical fiber 23 are fixed with interfaces 24, which are clamped between the upper and lower shells 11. The connecting part between the optical fiber 23 and the protective shell 21 is covered with a protective cover 25. The interface 24 is used to connect the input and output, and the protective cover 25 is used to protect the optical fiber 23 to prevent bending at the connection point and affect the performance of the optical fiber 23.

[0036] Multiple extension pieces 223 are fixedly connected to both sides of the multiple fins 222 located inside the protective shell 21. The surrounding pieces 221, fins 222, and extension pieces 223 are all made of red copper. The provided extension pieces 223 can further expand the contact area between the fins 222 and the inside of the protective shell 21, thereby improving the heat exchange efficiency and enhancing the heat dissipation effect. The surrounding pieces 221, fins 222, and extension pieces 223 are an integrated structure with smooth heat conduction. The internal crystal structure of red copper is tight and has good thermal conductivity. The surrounding pieces 221, fins 222, and extension pieces 223 made of red copper have strong heat conduction effect and high heat dissipation efficiency.

[0037] Two insertion rods 26 are fixedly inserted on the upper and lower sides of the interior of the protective shell 21. The insertion rods 26 are close to the outer arc surface of the surrounding piece 221. The arranged insertion rods 26 can play a role in applying stress after being inserted into the interior of the protective shell 21. The surrounding piece 221 in the middle is squeezed by the stress of the two insertion rods 26, which can produce a clamping effect, and at the same time can also protect the structural strength of the shell 21 to prevent deformation.

[0038] The connecting assembly 3 includes an upper connecting portion 31 and a lower connecting portion 32. The upper connecting portion 31 is connected to the upper shell 11, and the lower connecting portion 32 is connected to the lower shell 11. The upper connecting portion 31 includes a connecting seat 311 fixed on the upper end surface of the upper shell 11. Both sides of the upper end surface of the connecting seat 311 are sleeved with connecting screws 312. The lower end of the connecting screw 312 abuts against the protective shell 21. The lower connecting portion 32 includes two clips 321 fixed to the bottom of the lower shell 11. The clips 321 are clipped with the protective shell 21, and the upper end of the clips 321 is provided with a bevel 322.

[0039] When installing the fiber optic coupler body 2, firstly clamp the protective shell 21 between the two clips 321. The upper end of the clip 321 is provided with an angle 322 to facilitate the insertion of the protective shell 21 into the clip 321. The clip 321 is made of plastic. After the protective shell 21 is installed, the elasticity of the material itself can be used to clamp the protective shell 21, and then the upper shell 11 is clamped with the lower shell 11, and two connecting screws 312 are inserted until the lower ends of the two connecting screws 312 are pressed against the upper end surface of the protective shell 21, so that the protective shell 21 is stably installed inside the outer shell 1.

[0040] The portion of the fin 222 extending out of the opening 13 is lower than the outer edge plane of the groove 12. Since the fin 222 is thin, placing the fin 222 inside the groove 12 can prevent the fin 222 from protruding and causing the fin 222 to be deformed or even damaged when bumped, affecting its heat dissipation performance. At the same time, the upper and lower end surfaces of the groove 12 are in an open state, which is convenient for air circulation and does not affect the heat dissipation performance of the fin 222.

[0041] Working principle: When in use, heat dissipation components 22 are provided on both sides of the coupling part of the optical fiber 23. The heat dissipation components 22 are used to dissipate the heat of the optical fiber 23 when it is working, so as to prevent thermal expansion caused by excessive temperature, increase the core spacing in the coupling area of ​​the optical fiber 23, and reduce the optical fiber coupling efficiency. When dissipating heat, since the outer surrounding sheet 221 is set in an arc shape, it can fully surround the coupling area of ​​the optical fiber 23, and the heat can be conducted to the fin 222 by the surrounding sheet 221, and a part of the fin 222 extends out of the protective shell 21, so that the outer end temperature of the fin 222 will be lower than the inner end temperature, and the heat is conducted outwardly to dissipate heat. In addition, grooves 12 are provided on both sides of the shell 11, and an opening 13 is provided at the bottom of the groove 12. The fin 222 extends out of the opening 13. The sheet structure of the fin 222 has a large contact area with the air, and can quickly dissipate the heat. The fin 222 extending out of the opening 13 can extend to fully contact with the outside air, thereby reducing rapid heat dissipation.

[0042] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. An optical fiber coupling device with high coupling efficiency, comprising a housing (1), characterized in that: The interior of the housing (1) is provided with an optical fiber coupler body (2) via a connecting component (3); The optical fiber coupler body (2) comprises a protective shell (21), the interior of the protective shell (21) is fixedly coated with an optical fiber (23), and heat dissipation components (22) are provided on both sides of the coupling portion of the optical fiber (23); The heat dissipation component (22) comprises a surrounding sheet (221), the optical fiber (23) passes through two surrounding sheets (221), the outer ends of the surrounding sheets (221) are evenly and fixedly connected with a plurality of fins (222), and the outer ends of the fins (222) all extend out of the protective shell (21); The housing (1) comprises two upper and lower shells (11), both sides of the shells (11) are provided with grooves (12), the bottom of the grooves (12) is provided with openings (13), and the fins (222) extend out of the openings (13).

2. The optical fiber coupling device with high coupling efficiency according to claim 1, characterized in that: Multiple ends of the optical fiber (23) are fixed with interfaces (24), the interfaces (24) are clamped between the upper and lower shells (11), and the connection part between the optical fiber (23) and the protective shell (21) is covered with a protective cover (25).

3. The optical fiber coupling device with high coupling efficiency according to claim 1, characterized in that: A plurality of extension pieces (223) are fixedly connected to both sides of the plurality of fins (222) located inside the protective shell (21); the surrounding pieces (221), the fins (222) and the extension pieces (223) are all made of red copper.

4. The optical fiber coupling device with high coupling efficiency according to claim 1, characterized in that: Two insertion rods (26) are fixedly inserted into the upper and lower sides of the interior of the protective shell (21), and the insertion rods (26) are close to the outer periphery of the arc surface of the surrounding sheet (221).

5. The optical fiber coupling device with high coupling efficiency according to claim 1, characterized in that: The connection assembly (3) comprises an upper connection part (31) and a lower connection part (32); the upper connection part (31) is connected to an upper shell (11), and the lower connection part (32) is connected to a lower shell (11).

6. The optical fiber coupling device with high coupling efficiency according to claim 5, characterized in that: The upper connecting portion (31) comprises a connecting seat (311) fixed to the upper end surface of the upper shell (11), connecting screws (312) are sleeved on both sides of the upper end surface of the connecting seat (311), and the lower ends of the connecting screws (312) are in contact with the protective shell (21).

7. The optical fiber coupling device with high coupling efficiency according to claim 5, characterized in that: The lower connecting portion (32) comprises two buckles (321) fixed to the inner bottom of the lower shell (11), the buckles (321) are buckled with the protective shell (21), and the upper end of the buckles (321) is provided with an oblique angle (322).

8. The optical fiber coupling device with high coupling efficiency according to claim 1, characterized in that: The portion of the fin (222) extending out of the opening (13) is lower than the outer edge plane of the groove (12).