An optical fiber

Abstract

The utility model relates to optical communication technical field especially, it is a kind of optical fiber, including optical fiber body and metal plate, optical fiber body includes bare fiber section with fusion point, and first optical fiber section and second optical fiber section located at the both ends of bare fiber section, the outside of bare fiber section is provided with coating layer, metal plate is set at the outside of coating layer, and is connected with optical fiber body by UV glue fixed structure, this scheme is protected to fusion point by setting coating layer outside bare fiber section with fusion point, effectively reduces the loss and damage risk of fusion point, further by metal plate, the whole optical fiber body is stabilized, can effectively resist external tension, bending and other forces, avoid the rupture of optical fiber body due to external force, and the space occupied by metal plate is small, on the basis of guaranteeing the stability of optical fiber body, also can satisfy its small size requirement.

Description

Technical Field

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

[0002] In fields such as fiber optic communication and fiber optic sensing, fixed connections of optical fibers typically employ fusion splicing, which involves stripping the outer layers of the ends of two optical fibers and then splicing them together. To ensure the reliability of the fiber optic fusion splice, it is necessary to protect the splice. Currently, common protection methods include heat shrink tubing protection and coating protection. Heat shrink tubing protection of the fiber optic fusion splice will result in a splice area that is too large to fit into a QDD-packaged module. On the other hand, when using coating protection, the splice is prone to breakage when the fiber is bent, making it difficult to meet reliability requirements.

[0003] Therefore, designing an optical fiber with high splice reliability and small splice area size is of great importance to those skilled in the art. Utility Model Content

[0004] This utility model provides an optical fiber with high splice reliability and small splice area size to solve the problems of large splice area size and easy splice breakage.

[0005] This utility model discloses an optical fiber, which includes: an optical fiber body and a metal plate. The optical fiber body includes a bare fiber segment with a fusion splice, and a first optical fiber segment and a second optical fiber segment located at both ends of the bare fiber segment. The bare fiber segment is coated with a coating layer. The metal plate is disposed outside the coating layer and is connected to the optical fiber body by a UV adhesive fixing structure.

[0006] Optionally, the UV adhesive fixing structure completely covers the contact area between the metal plate and the optical fiber body.

[0007] Optionally, the length direction of the metal plate and the length direction of the coating layer are both consistent with the extension direction of the optical fiber body.

[0008] Optionally, the length of the metal plate is greater than the length of the coating layer.

[0009] Optionally, the width of the metal plate is greater than the diameter of the optical fiber body.

[0010] Optionally, the bottom diameter of the UV adhesive fixing structure is adapted to the width of the metal plate.

[0011] Optionally, a UV adhesive protective structure is also provided between the two ends of the metal plate and the optical fiber body.

[0012] Optionally, the UV adhesive protective structure is conical.

[0013] Optionally, the bottom diameter of the UV adhesive protective structure is adapted to the width of the metal plate.

[0014] Optionally, both the first optical fiber segment and the second optical fiber segment are provided with an optical fiber coating on their exterior, and both ends of the coating are smoothly connected to the optical fiber coating.

[0015] The beneficial effects of the optical fiber provided in this embodiment of the present invention are as follows: by designing an optical fiber, a coating layer is set on the outside of the bare fiber section with the splice point to protect the splice point, effectively reducing the loss and damage risk of the splice point. Furthermore, the entire optical fiber body is stabilized by a metal plate, which can effectively resist external tensile forces, bending forces, etc., and prevent the optical fiber body from breaking due to external forces. Moreover, the metal plate occupies little space, which can meet the small size requirements while ensuring the stability of the optical fiber body. Attached Figure Description

[0016] 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: Figure 1 This is a schematic diagram of the optical fiber structure in an embodiment of this utility model; Figure 2 This is the cross-section of the optical fiber in the embodiments of this utility model. Figure 1 ; Figure 3 This is the cross-section of the optical fiber in the embodiments of this utility model. Figure 2 .

[0017] The labels for the attached figures are as follows: 100, Fiber body; 200, Metal plate; 300, Coating layer; 300, Coating layer; 400, UV adhesive fixing structure; 500, UV adhesive protective structure; 110, Bare fiber segment; 111, Fusion splice; 120, First fiber segment; 130, Second fiber segment. Detailed Implementation

[0018] 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.

[0019] like Figures 1 to 3 As shown, this utility model provides a specific embodiment of an optical fiber.

[0020] A type of optical fiber, reference Figure 1 and Figure 2The optical fiber includes an optical fiber body 100 and a metal plate 200. The optical fiber body 100 includes a bare fiber segment 110 with a fusion splice 111, and a first optical fiber segment 120 and a second optical fiber segment 130 at both ends of the bare fiber segment 110. A coating layer 300 is provided on the outside of the bare fiber segment 110. The metal plate 200 is disposed on the outside of the coating layer 300 and is connected to the optical fiber body 100 by a UV adhesive fixing structure 400.

[0021] Specifically, refer to Figure 1 and Figure 2 The optical fiber body 100 is formed by fusion splicing two optical fibers, where the bare fiber portions of the two fibers are fused together to form a bare fiber segment 110 with a splice point 111. The first optical fiber segment 120 and the second optical fiber segment 130 are the non-bare fiber portions of the two optical fibers, that is, the portions located at both ends of the bare fiber segment 110 that normally have optical fiber coatings. The two ends of the coating layer 300 are smoothly connected to the optical fiber coatings of the first optical fiber segment 120 and the second optical fiber segment 130, respectively. The length of the bare fiber segment 110 is selected according to the actual fusion requirements and can be between 0.5mm and 2mm. The coating layer 300 is disposed on the outside of the bare fiber segment 110 to coat the bare fiber segment 110 and the splice point 111. For protection, the coating layer 300 is made of materials with good insulation, temperature resistance and mechanical properties, such as polyimide, acrylate, etc. The coating layer 300 has a uniform thickness, which can be between 50-100μm. Its length covers the entire bare fiber segment 110 and extends a certain distance to the first fiber segment 120 and the second fiber segment 130 at both ends of the bare fiber segment 110 to ensure that the bare fiber segment 110 is completely wrapped and protected. The metal plate 200 is made of a metal material with certain strength and toughness, such as stainless steel or copper. Its shape is long strip. It is set on one side of the optical fiber and outside the coating layer 300, and is connected to the optical fiber body 100 by the UV adhesive fixing structure 400.

[0022] The processing flow can be as follows: first, a coating layer 300 is set on the outside of the bare fiber segment 110, then the metal plate 200 is placed on one side of the optical fiber body 100, and the bare fiber segment 110 is in the middle of the metal plate 200. Finally, the metal plate 200 and the optical fiber body 100 are fixed by the UV glue fixing structure 400.

[0023] This solution protects the fusion splice 111 by applying a coating layer 300 to the outside of the bare fiber segment 110 with the fusion splice 111, effectively reducing the loss and damage risk of the fusion splice 111. Furthermore, the metal plate 200 stabilizes the entire optical fiber body 100, effectively resisting external forces such as tension and bending, preventing the optical fiber body 100 from breaking due to external forces. Moreover, the metal plate 200 occupies little space, ensuring the stability of the optical fiber body 100 while also meeting its small size requirements.

[0024] In one embodiment, reference Figure 1 and Figure 2 The UV adhesive fixing structure 400 completely covers the contact area between the metal plate 200 and the optical fiber body 100. By completely covering the area, a continuous and uninterrupted bonding section is formed, which allows the force between the metal plate 200 and the optical fiber body 100 to be evenly distributed throughout the contact area, greatly improving the overall bonding strength. This can effectively resist greater external pulling or vibration impact and reduce the risk of structural separation caused by local bonding failure.

[0025] In one embodiment, the length direction of the metal plate 200 and the length direction of the coating layer 300 are both consistent with the extension direction of the optical fiber body 100. The consistency of the direction makes the entire optical fiber structure more compact and will not extend excessively to the radially outer side of the optical fiber body 100. This reduces the space occupied by the optical fiber structure in the radial direction and is suitable for scenarios where optical fibers need to be installed in narrow spaces.

[0026] In one embodiment, the length of the metal plate 200 is greater than the length of the coating layer 300. This design allows both ends of the metal plate 200 to extend to the areas of the first optical fiber segment 120 and the second optical fiber segment 130 outside the coating layer 300, which can protect the edge of the coating layer 300 and the optical fiber body 100 outside it, preventing the edge of the coating layer 300 from peeling off due to external friction or collision, and effectively improving the overall stability of the optical fiber.

[0027] In one embodiment, reference Figure 1 and Figure 2 The width of the metal plate 200 is greater than the diameter of the optical fiber body 100. This design allows the metal plate 200 to provide more comprehensive wrapping support from the radial side of the optical fiber body 100, which can effectively suppress the swaying of the optical fiber in the radial direction and improve the overall stability of the optical fiber.

[0028] In one embodiment, reference Figure 1 and Figure 2 The bottom diameter of the UV adhesive fixing structure 400 is adapted to the width of the metal plate 200. This design allows for a full and matching contact between the UV adhesive fixing structure 400 and the metal plate 200. The bottom surface of the UV adhesive fixing structure 400 can completely cover the width range of the metal plate 200, making the connection between the metal plate 200 and the optical fiber body 100 more secure and preventing localized poor adhesion or easy detachment. This further ensures the connection stability between the metal plate 200 and the optical fiber body 100.

[0029] In one embodiment, reference Figure 2 and Figure 3A UV adhesive protective structure 500 is also provided between both ends of the metal plate 200 and the optical fiber body 100, and the UV adhesive protective structure 500 is conical. The conical structure has a gradual transition characteristic, and its diameter gradually decreases from the bottom that fits the metal plate 200 towards the optical fiber body 100, forming a smooth transition surface. On the one hand, when the optical fiber is subjected to axial tension, bending force, or radial impact force, this gradual transition structure can smoothly transfer stress and avoid stress abrupt changes and concentrations at the connection edge between the metal plate 200 and the optical fiber body 100. The smooth transition of the conical shape can... This significantly reduces the risk of microcracks or breakage in the optical fiber body 100 due to excessive local stress. On the other hand, the conical UV adhesive protective structure 500 tightly wraps the connection area between the end of the metal plate 200 and the optical fiber body 100, forming a 360-degree sealed protection without dead angles. Its conical side can effectively block external dust, moisture, oil and other impurities from entering through the gap between the end of the metal plate 200 and the optical fiber body 100, preventing impurities from adhering to the surface of the optical fiber or penetrating near the splice point 111, thereby reducing the impact on the optical fiber transmission performance and extending the service life of the optical fiber.

[0030] 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. An optical fiber, characterized in that, include: The optical fiber body and the metal plate are provided. The optical fiber body includes a bare fiber segment with a fusion splice, and a first optical fiber segment and a second optical fiber segment located at both ends of the bare fiber segment. The bare fiber segment is coated with a coating layer. The metal plate is disposed outside the coating layer and is connected to the optical fiber body by a UV adhesive fixing structure.

2. The optical fiber according to claim 1, characterized in that, The UV adhesive fixing structure completely covers the contact area between the metal plate and the optical fiber body.

3. The optical fiber of claim 1, wherein, The length direction of the metal plate and the length direction of the coating layer are both consistent with the extension direction of the optical fiber body.

4. The optical fiber of claim 1, wherein, The length of the metal plate is greater than the length of the coating layer.

5. The optical fiber of claim 1, wherein, The width of the metal plate is greater than the diameter of the optical fiber body.

6. The optical fiber of claim 1, wherein, The bottom diameter of the UV adhesive fixing structure is adapted to the width of the metal plate.

7. The optical fiber of claim 1, wherein, A UV adhesive protective structure is also provided between the two ends of the metal plate and the optical fiber body.

8. The optical fiber of claim 7, wherein, The UV adhesive protective structure is conical in shape.

9. The optical fiber of claim 7, wherein, The bottom diameter of the UV adhesive protective structure is adapted to the width of the metal plate.

10. The optical fiber of claim 1, wherein, Both the first and second optical fiber segments are provided with an optical fiber coating on their exterior, and both ends of the coating are smoothly connected to the optical fiber coating.

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