Fiber winding device

Abstract

The utility model discloses a fiber winding device which comprises a base, an optical fiber winding unit and a fixing unit. An assembly hole is formed in the base, and a fiber guide groove is formed in the side part of the base; the optical fiber winding unit comprises an optical fiber winding column, and a preset number of turns of to-be-tested optical fibers are wound in the middle of the optical fiber winding column; the optical fiber winding column is installed in an assembly hole of the base, a gap between the optical fiber winding column and the hole wall of the assembly hole is filled with refractive index matching liquid, and an optical fiber to be tested is soaked in the refractive index matching liquid; two ends of the to-be-tested optical fiber are led out of the base through the fiber leading groove; the fixing unit is arranged at the top of the base, one end of the fixing unit is tightly pressed on the top surface of the optical fiber winding column, and the other end of the fixing unit is connected with the base. The beneficial effects of the utility model are that the pedestal is designed, the optical fiber winding column is installed in the assembling hole of the pedestal, and the refractive index matching liquid is dropped into the gap between the optical fiber winding column and the hole wall of the assembling hole, so that the optical fiber is completely immersed in the refractive index matching liquid, the influence of the WGM effect on the test result is reduced, and the reliability of the test result is improved.

Description

Technical Field

[0001] This utility model belongs to the field of optical fiber testing equipment technology, specifically relating to a fiber winding device. Technical Background

[0002] Bending of optical fibers during use can easily alter the waveguide structure, causing the fundamental mode of the transmission section to become a radiation mode, thus generating additional macrobending loss. Current standards specify macrobending loss for optical fibers. However, in actual production and applications, due to the inherent structural characteristics of optical fibers and varying testing conditions, especially for the G.657 series of bend-insensitive fibers, significant differences and poor stability are frequently observed in the results of multiple tests on the same sample.

[0003] Currently, the macrobending test systems used by major manufacturers mainly perform macrobending tests on optical fibers by simply winding the fiber around a single loop. This method makes it difficult to reduce the impact of the Whispering Gallery Mode (WGM) effect on the test results during the macrobending test, resulting in poor reliability of the test results and causing certain difficulties for the research and development and production control of optical fibers. Summary of the Invention

[0004] The purpose of this invention is to provide a fiber winding device to address the shortcomings of existing technologies, thereby improving the reliability of fiber macrobending performance test results.

[0005] The technical solution adopted in this utility model is: a fiber winding device, including a base, an optical fiber winding unit and a fixing unit;

[0006] The base has an assembly hole and a fiber guide groove on its side.

[0007] The fiber winding unit includes a fiber winding column, and the fiber to be tested is wound with a predetermined number of turns in the middle of the fiber winding column;

[0008] The fiber winding post is installed in the mounting hole of the base, and the gap between the fiber winding post and the wall of the mounting hole is filled with refractive index matching liquid. The fiber to be tested is immersed in the refractive index matching liquid. The two ends of the fiber to be tested are led out of the base through the fiber guide groove.

[0009] The fixing unit is located on the top of the base. One end of the fixing unit is pressed against the top surface of the optical fiber winding column, and the other end of the fixing unit is connected to the base.

[0010] According to the above scheme, the optical fiber winding column includes a positioning column segment, a fiber winding column segment, and a fixing column segment connected sequentially from bottom to top. Both the fixing column segment and the fiber winding column segment have gaps between them and the hole wall of the assembly hole. The fiber to be tested is wound on the fiber winding column segment, and the fiber guide groove is opened on the outside of the fiber winding column segment. The end of the fixing unit presses against the upper surface of the fixing column segment.

[0011] According to the above scheme, the outer diameters of the positioning column segment, the fiber winding column segment, and the fixing column segment decrease sequentially.

[0012] According to the above scheme, the lower end of the positioning column segment is connected to a positioning rod, which is adapted to the positioning hole opened in the base.

[0013] According to the above scheme, the outer wall of the positioning column section is provided with a positioning pin, which is adapted to the positioning groove opened on the side of the assembly hole.

[0014] According to the above scheme, a lifting rod is also provided on the upper outer periphery of the fixed column section to facilitate upward lifting.

[0015] According to the above scheme, a docking groove is provided on the lower end face of the positioning column segment; a spring column groove is provided in the base below the docking groove; the lower end of the spring column is installed in the spring column groove, and the upper end of the spring column is adapted to the position of the docking groove of the positioning column segment.

[0016] According to the above scheme, the fixing unit includes a pressure block and a bolt; one end of the pressure block is pressed against the upper surface of the fixing column section of the optical fiber winding column, and the other end of the pressure block is connected to the base by a bolt.

[0017] According to the above scheme, the pressing block is made of one of the following materials: silicone rubber, polystyrene, or rigid PVC.

[0018] According to the above scheme, four lifting rods are provided on the outer periphery of the fixed column section.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The present invention designs a base in which an optical fiber winding post is installed in the mounting hole of the base. A refractive index matching liquid with a higher refractive index than the optical fiber coating is dripped into the gap between the optical fiber winding post and the wall of the mounting hole, so that the optical fiber is completely immersed in the refractive index matching liquid. This can reduce the influence of the WGM effect on the test results, reduce the fluctuation of the test results, and improve the reliability of the test results.

[0021] 2. The fiber optic winding column in this utility model includes a positioning column segment, a winding column segment, and a fixing column segment. The positioning column segment plays a role in installation and positioning, while the fixing column segment plays a role in fixing, thereby improving the reliability of the entire device.

[0022] 3. The present invention is designed with a spring column, which can pop out the optical fiber winding column after the test, making it easy to remove and replace the optical fiber winding column.

[0023] 4. The present invention incorporates a fixing unit that uses pressure blocks to press and fix the fiber optic winding column, preventing the fiber optic winding column from loosening during the test and improving the reliability of the entire device.

[0024] 5. This utility model is easy to operate and safe and reliable. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0026] Figure 2 This is a top view of the base in Embodiment 1.

[0027] Figure 3 This is a side view of the fiber optic winding unit in Embodiment 1.

[0028] Figure 4 This is a top view of the fiber optic winding unit in Embodiment 1.

[0029] Figure 5 This is a top view of the fixed unit in Embodiment 1.

[0030] The components include: 1. Fiber optic winding column; 1.1. Positioning column section; 1.2. Fiber winding column section; 1.3. Fixing column section; 1.4. Lifting rod; 2. Positioning pin; 3. Docking groove; 4. Positioning rod; 5. Pressure block; 6. Bolt; 7. Base; 8. Bolt hole; 9. Positioning groove; 10. Assembly hole; 11. Spring column; 12. Positioning hole; 13. Fiber guide groove. Detailed Implementation

[0031] To better understand this utility model, it will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1 The fiber winding device shown is specifically a fiber winding device for testing the macrobending performance of optical fibers, including a base 7, an optical fiber winding unit, and a fixing unit.

[0033] The base 7 has an assembly hole 10 inside and a fiber guide groove 13 on the side of the base 7.

[0034] The optical fiber winding unit includes an optical fiber winding post 1, and the optical fiber to be tested is wound with a predetermined number of turns in the middle of the optical fiber winding post 1.

[0035] The fiber winding post 1 is installed in the assembly hole 10 of the base 7. The gap between the fiber winding post 1 and the hole wall of the assembly hole 10 is filled with refractive index matching liquid. The fiber to be tested is immersed in the refractive index matching liquid. The two ends of the fiber to be tested are led out of the base 7 through the fiber leading groove 13.

[0036] The fixing unit is located on the top of the base 7. One end of the fixing unit is pressed against the top surface of the optical fiber winding column 1, and the other end of the fixing unit is connected to the base 7.

[0037] In this invention, the gap between the mounting hole 10 of the base 7 and the fiber winding post 1 is filled with a refractive index matching liquid. The optical fiber to be tested, wound on the fiber winding post 1, is immersed in the refractive index matching liquid. Both ends of the optical fiber to be tested are led out of the base 7 through the fiber guide groove 13 and connected to the testing equipment outside the base 7 for testing to obtain the macro-bending performance of the optical fiber. The refractive index of the refractive index matching liquid is higher than that of the optical fiber coating.

[0038] Preferably, the fiber winding column 1 includes a positioning column segment 1.1, a fiber winding column segment 1.2, and a fixing column segment 1.3 connected sequentially from bottom to top. Both the fixing column segment 1.3 and the fiber winding column segment 1.2 have gaps between them and the wall of the assembly hole 10. The fiber winding column segment 1.2 is wound with the fiber to be tested, and the fiber guide groove 13 is opened on the outside of the fiber winding column segment 1.2. The upper surface of the fixing column segment 1.3 is flush with the top of the base 7, and the end of the fixing unit presses against the upper surface of the fixing column segment 1.3.

[0039] In this invention, the outer diameters of the positioning column segment 1.1, the fiber winding column segment 1.2, and the fixing column segment 1.3 decrease sequentially. A gap is left between the fiber winding column segment 1.2 and the fixing column segment 1.3 and the wall of the assembly hole 10 to allow the refractive index matching liquid to be injected. The size of the fiber winding column segment 1.2 of the fiber winding column 1 can be designed according to actual needs. A lifting rod 1.4 is also provided on the upper outer periphery of the fixing column segment 1.3 to facilitate upward lifting.

[0040] Preferably, the lower end of the positioning column segment 1.1 is connected to a positioning rod 4, which is adapted to the positioning hole 12 opened in the base 7, and the positioning rod 4 is inserted into the positioning hole 12 opened in the base 7.

[0041] Preferably, the outer wall of the positioning column segment 1.1 is provided with a positioning pin 2, which is adapted to the vertical positioning groove 9 opened on the side of the assembly hole 10.

[0042] In this invention, the positioning pin 2 and the positioning rod 4 are used for circumferential and axial positioning of the optical fiber winding column 1.

[0043] Preferably, the lower end face of the positioning column segment 1.1 is provided with a mating groove; a spring column groove is provided in the base 7 below the mating groove; the lower end of the spring column 11 is installed in the spring column groove, and the upper end of the spring column 11 is adapted to the position of the mating groove of the positioning column segment 1.1.

[0044] In this utility model, the spring post 11 is located at the bottom center of the positioning post segment 1.1. The spring post 11 includes a post body and a spring located at the lower end of the post body. The length of the spring post 11 is designed according to actual needs. When the fiber optic winding post 1 is installed in the base 7, the spring at the lower end of the spring post 11 is compressed. After the test is completed, the fixing unit is released, and the spring at the lower end of the spring post 11 body returns to its original position and extends to pop out the fiber optic winding post 1, making it easy to remove the fiber optic winding post 1 from the assembly hole 10 of the base 7.

[0045] Preferably, the fixing unit includes a pressure block 5 and a bolt 6; one end of the pressure block 5 is pressed against the upper surface of the fixing column segment 1.3 of the optical fiber winding column 1, and the other end of the pressure block 5 is connected to the base 7 by the bolt 6.

[0046] In this invention, the pressure block 5 is made of a hard material with a high coefficient of friction, such as silicone rubber, polystyrene, or rigid PVC.

[0047] Example 1

[0048] like Figure 1 The fiber winding device shown includes an fiber winding unit, a fixing unit, and a base 7 for testing the macrobending performance of optical fibers. Figure 3 and Figure 4 As shown, the optical fiber winding unit includes an optical fiber winding column 1 and a pair of positioning rods 4 located at the lower end of the optical fiber winding column 1. The optical fiber winding column 1 is composed of three stacked cylindrical segments, with the outer diameter decreasing sequentially from bottom to top according to a preset size. The bottom cylindrical segment is a positioning column segment 1.1, with a positioning pin 2 embedded on its side and a docking groove 3 at the center of its lower end face. The positioning rods 4 are connected to the positioning column segment 1.1 at the bottom of the optical fiber winding column 1. The middle cylindrical segment of the optical fiber winding column 1 is a fiber winding column segment 1.2 for winding the optical fiber. The fiber winding column segment 1.2 can be designed with different outer diameters as needed to provide different bending radii for the optical fiber winding. The top cylindrical segment of the optical fiber winding column 1 is a fixing column segment 1.3, with four lifting rods 1.4 on its outer periphery for easy lifting. The entire optical fiber winding column 1 is placed into the assembly hole 10 of the base 7. The positioning pins 2 and positioning rods 4 position the optical fiber winding column 1 in the base 7 in different directions to ensure a stable state. Figure 5 As shown, the fixing unit includes a pressure block 5 and a bolt 6. The bolt 6 is connected to the pressure block 5. The pressure block 5 is positioned above the horizontal plane of the fixing column section 1.3 of the fiber optic winding column 1. Tightening the bolt 6 and the pressure block 5 drives the fiber optic winding column 1 to fully enter the assembly hole 10. The pressure block 5 is made of a hard material with a high coefficient of friction, such as silicone rubber, polystyrene, or rigid PVC. Figure 2As shown, the base 7 has bolt holes 8 adapted to bolts 6, assembly holes 10 for installing fiber optic winding posts 1, vertical positioning grooves 9 adapted to positioning pins 2, spring post 11 holes adapted to spring posts 11, and positioning holes 12 adapted to positioning rods 4. The positioning groove 9 is located on the side close to the bolt holes 8. The assembly hole 10 has a fiber guide groove 13 (corresponding to the position of the fiber winding post segment 1.2 of the fiber optic winding post 1) on the side opposite to the bolt holes 8, through which the fiber can pass after winding. After winding, the fiber passes through the fiber guide groove 13 for connecting to the test equipment for testing. The spring post 11 is located below the axis in the assembly hole 10, and the positioning holes 12 are symmetrically arranged on both sides of the spring post 11. The fiber optic winding post 1 is fixed in the assembly hole 10, and after winding, the fiber passes through the fiber guide groove 13 to connect to the test equipment.

[0049] Example 2

[0050] This embodiment has the same configuration as Embodiment 1, except for the following setting: two lifting rods 1.4 are provided at intervals around the outer periphery of the fixed column segment 1.3.

[0051] The difference in refractive index between the fiber coating and air is the greatest, causing some light to be reflected back to the fiber core and coupled with the light propagating in the fiber core, resulting in power oscillation and the WGM effect (Whispering Gallery Mode). If the outside air is replaced with a material with a higher refractive index, the reflected light will be reduced, and the oscillation effect caused by it will also be reduced. This invention is designed based on this principle.

[0052] The working principle of this utility model is as follows:

[0053] Select an optical fiber winding post 1 of appropriate size, keep it vertical, align the positioning pin 2 of the optical fiber winding post 1 with the positioning groove 9 of the base 7, and align the two positioning rods 4 with the positioning holes 12 of the base 7. Slowly place the optical fiber winding post 1 into the assembly hole 10. Take a sample of the optical fiber to be tested of a set length and wind it around the winding post section 1.2 of the optical fiber winding post 1 with a preset number of turns. After winding, place the pressure block 5 on the top of the optical fiber winding post 1, tighten the bolt 6 to link the pressure block 5 and completely embed the optical fiber winding post 1 into the assembly hole 10. Then, pass both ends of the optical fiber to be tested through the fiber guide groove 13 and connect them to the testing equipment. In the annular uniform gap formed between the optical fiber winding post 1 and the assembly hole 10, drip a refractive index matching liquid to ensure that the wound optical fiber to be tested is completely immersed in the liquid. Turn on the testing equipment to perform the test. After the test is completed, loosen bolt 6, move pressure block 5, and the fiber optic winding post 1 will be pushed out by spring post 11. If it is not necessary to replace the fiber optic winding post 1, the original fiber can be directly removed from the winding post section 1.2 and replaced with a new fiber before proceeding to the next test. If it is necessary to replace the fiber optic winding post 1, the original fiber optic winding post 1 can be removed and replaced with a new fiber optic winding post 1 that meets the requirements before proceeding with the test using the above method.

[0054] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0055] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for winding a fiber, characterized in that, The base, the optical fiber winding unit and the fixing unit are included. An assembly hole is formed in the base, and a fiber guiding groove is formed in the side of the base. The optical fiber winding unit includes an optical fiber winding column, and a predetermined number of optical fibers to be tested are wound around the middle of the optical fiber winding column. The optical fiber winding column is installed in the assembly hole of the base, and a gap between the optical fiber winding column and the hole wall of the assembly hole is filled with an index matching liquid, and the two ends of the optical fiber to be tested are led out of the base through the fiber guiding groove. The fixing unit is arranged on the top of the base, one end of the fixing unit is pressed against the top surface of the optical fiber winding column, and the other end of the fixing unit is connected with the base.

2. The fiber winding device of claim 1, wherein, The optical fiber winding column includes a positioning column segment, a fiber winding column segment and a fixing column segment connected in sequence from bottom to top, and gaps are left between the fixing column segment and the fiber winding column segment and the hole wall of the assembly hole; the fiber winding column segment is wound with the optical fiber to be tested, and the fiber guiding groove is formed on the outside of the fiber winding column segment; and the end of the fixing unit is pressed against the upper surface of the fixing column segment.

3. The fiber winding device of claim 2, wherein, The outer diameters of the positioning column segment, the fiber winding column segment and the fixing column segment are sequentially reduced.

4. The filament winding apparatus of claim 2 or 3, wherein, A positioning rod is connected to the lower end of the positioning column segment, and the positioning rod is matched with a positioning hole formed in the base.

5. The device of claim 2 or 3, wherein, A positioning pin is arranged on the outer wall of the positioning column segment, and the positioning pin is matched with a positioning groove formed in the side of the assembly hole.

6. The fiber winding apparatus according to claim 2 or 3, wherein A pulling rod is further arranged on the outer periphery of the upper end of the fixing column segment.

7. The filament winding apparatus of claim 2 or 3, wherein, An abutting groove is formed in the lower end surface of the positioning column segment, a spring column groove is formed in the base below the abutting groove, a spring column is installed in the spring column groove, and the upper end of the spring column is matched with the position of the abutting groove of the positioning column segment.

8. The filament winding apparatus of claim 2 or 3, wherein, The fixing unit includes a pressing block and a bolt, one end of the pressing block is pressed against the upper surface of the fixing column segment of the optical fiber winding column, and the other end of the pressing block is connected with the base through the bolt.

9. The filament winding apparatus of claim 8, wherein, The pressing block is made of one of the following materials: silicone rubber, polystyrene and PVC.

10. The fiber winding apparatus of claim 2, wherein, Four pulling rods are arranged on the outer periphery of the fixing column segment.

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