A fiber winding auxiliary tooling for fiber optic macro-bending loss testing and its application method

Abstract

The present invention provides a fiber winding auxiliary tooling for fiber optic macro-bending loss testing, which includes a chassis, a fiber optic guiding component, a fiber winding component, and a fiber optic clamping component; the fiber winding component includes a plurality of fiber winding circular shafts with different diameters, and the fiber winding circular shafts are vertically installed on the chassis; each fiber optic clamping component corresponds to a fiber winding circular shaft; the fiber optic clamping component includes a mounting shaft, a clamping lever, and a sponge strip, and the sponge strip can rotate towards the fiber winding circular shaft under the drive of the clamping lever and be in close contact with the fiber winding circular shaft; the fiber optic is introduced into the device through the fiber optic guiding component, and fiber optic loops with different diameters are formed by winding around the fiber winding circular shafts with different diameters, and the fiber optic clamping component exerts a clamping effect on the wound fiber optic loops; the present invention also provides an application method of the above device. The present invention can quickly complete the winding work of various fiber optics, is small in size, can be fixed on a variety of testing instruments for use, effectively improves the testing efficiency of fiber optic macro-bending loss testing, and improves the stability of the testing results.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical fiber performance detection, and particularly relates to a fiber winding auxiliary tooling for optical fiber macro-bending loss testing and an application method thereof. Background Art

[0002] The macro-bending loss of an optical fiber is an important test item for the performance of the optical fiber. Especially for the bend-insensitive single-mode optical fiber (G.657) series, the test requirements for the macro-bending performance are more stringent. When measuring the macro-bending loss of a single-mode optical fiber, it is necessary to wind the optical fiber into a circle with a certain diameter according to the requirements, and measure the macro-bending loss of the optical fiber by measuring the change in loss between the bent and unbent states of the optical fiber. Most of the currently used auxiliary tools are either a single winding cylinder or an integrated auxiliary tooling. The single winding cylinder needs to frequently replace multiple winding cylinders with different radii during the test according to the type of optical fiber, which is rather cumbersome to use. Moreover, the winding method is manual winding. Since the optical fiber will bounce back due to its own bending stress after winding, it is necessary to fix the optical fiber by hand or other heavy objects, resulting in instability in the optical fiber test and affecting the accuracy of the optical fiber test results. And most of the integrated auxiliary toolings are inconvenient to use in the process due to their large size and heavy weight, which affects the efficiency of the test work.

[0003] Based on this, the present invention provides a convenient, efficient, and small-sized fiber winding auxiliary tooling for optical fiber macro-bending loss testing and an application method thereof, which can quickly complete the winding work of various optical fibers, can be fixed on a variety of test instruments for use, effectively improves the test efficiency of optical fiber macro-bending loss testing, and improves the stability of the test results. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art and provide a fiber winding auxiliary tooling for optical fiber macro-bending loss testing and an application method thereof to solve problems such as low efficiency of optical fiber macro-bending loss testing work, cumbersome fiber winding work, and susceptibility of test results to external factors.

[0005] The present invention adopts the following technical solutions:

[0006] A fiber winding auxiliary tooling for optical fiber macro-bending loss testing includes a chassis, an optical fiber guiding component, a fiber winding component, and an optical fiber clamping component. The optical fiber guiding component, the fiber winding component, and the optical fiber clamping component are all arranged on the chassis; the fiber winding component includes a plurality of fiber winding round shafts with different diameters, and the fiber winding round shafts are vertically installed on the chassis; the designed number of the optical fiber clamping components is the same as that of the fiber winding round shafts, and each optical fiber clamping component corresponds to a fiber winding round shaft; one end of the optical fiber is introduced into the device through the optical fiber guiding component, forms optical fiber circles with different diameters by winding around the fiber winding round shafts with different diameters, and is led out of the device through the optical fiber guiding component. The optical fiber clamping component exerts a clamping effect on the wound optical fiber circles.

[0007] Furthermore, a connecting rod is fixedly installed on the fiber winding circular shaft, and the fiber winding circular shaft is installed on the chassis through the connecting rod; a plurality of parallel strip-shaped through holes are provided on the chassis, the connecting rod passes through the strip-shaped through holes and can slide in the strip-shaped through holes; the connecting rod is detachably and fixedly connected to the chassis through a fixing member.

[0008] Furthermore, the fixing member is a nut, a thread is provided on the connecting rod, and the connecting rod is threadedly connected to the chassis.

[0009] Furthermore, the optical fiber clamping component includes a mounting shaft, a clamping pressure rod and a sponge strip; the mounting shaft is fixedly arranged on the chassis, the clamping pressure rod is rotatably connected to the mounting shaft, the sponge strip is fixed on the clamping pressure rod, and the sponge strip can rotate towards the fiber winding circular shaft under the drive of the clamping pressure rod and is in close contact with the fiber winding circular shaft to play a clamping role.

[0010] Furthermore, the length of the sponge strip is the same as the length of the fiber winding circular shaft, both being 80 mm.

[0011] Furthermore, the optical fiber guiding component includes an optical fiber introducing member and an optical fiber extracting member, and the optical fiber introducing member and the optical fiber extracting member are respectively arranged on both sides of the fiber winding component to realize the functions of optical fiber introduction and extraction.

[0012] Furthermore, the optical fiber introducing member and the optical fiber extracting member are rectangular sponge blocks, and cracks for the optical fiber to pass through are provided on the sponge blocks.

[0013] Furthermore, the position of the crack corresponds to the position where the optical fiber clamping component contacts the fiber winding circular shaft.

[0014] Furthermore, a strip-shaped mounting groove is also provided on the chassis of the device, and the optical fiber introducing member and the optical fiber extracting member are respectively fixed on the chassis through the strip-shaped mounting groove.

[0015] Furthermore, the heights of the optical fiber introducing member and the optical fiber extracting member on the chassis are the same as the height of the fiber winding circular shaft.

[0016] The present invention also provides an application method of the above-mentioned fiber winding auxiliary tooling for optical fiber macro-bending loss testing, including the following steps:

[0017] S1. Select a plurality of fiber winding circular shafts with different radii according to the type of optical fiber, install them on the chassis as required, so that the gaps where the cracks of the optical fiber guiding component, the fiber winding circular shaft and the optical fiber clamping component fit are all on the same straight line, and then the testing work can be started;

[0018] S2. Pass one end of the optical fiber to be tested through the crack of the optical fiber inlet part, then wind the optical fiber around a fiber winding circular shaft and slightly tighten the optical fiber. Clamp the optical fiber with the corresponding clamping pressure rod, and then pass the optical fiber through the crack of the optical fiber outlet part at the other end, and start to test the power of the optical fiber in the bent state;

[0019] S3. After the test instrument finishes testing the power of the optical fiber in the bent state, loosen the clamping pressure rod 3, remove the optical fiber on the fiber winding circular shaft, straighten the optical fiber to a non-bent state, and then test the power of the optical fiber in the non-bent state. After comparing the two test powers, the macro-bending loss of this section of the optical fiber can be obtained;

[0020] S4. Repeat steps S2 and S3, and complete the macro-bending loss test of optical fibers with different radii with different numbers of winding turns according to the required test requirements.

[0021] Advantages of the present invention:

[0022] (1) The integrated chassis adopted by the present invention can integrate fiber winding components with different radii required in the test process onto the same device, eliminating the need to frequently replace the fiber winding cylinder in the existing test process, especially when testing G.657 single-mode optical fibers, and improving the test work efficiency;

[0023] (2) Multiple strip-shaped through holes are provided on the chassis of the present invention, and multiple fiber winding components can be installed at one time. Different-sized fiber winding components can be arbitrarily combined according to the test needs, and the test needs of various optical fibers can be met;

[0024] (3) The fiber winding components of the present invention are vertically arranged on the chassis, making the winding step more convenient. The corresponding clamping pressure rod of the fiber winding component plays a stabilizing role on the wound optical fiber, preventing the optical fiber from being bounced off by the stress generated by its own bending, and ensuring the stability of the test state;

[0025] (4) The optical fiber guiding component and the optical fiber clamping component provided by the present invention both use sponge materials, which can effectively reduce the external stress on the optical fiber during the test and protect the optical fiber coating from damage;

[0026] (5) The device of the present invention is small, light and portable, and can meet the requirements of use in various environments; the device is reasonably designed, has a simple structure and is easy to operate, and has strong practicability and wide applicability. Description of the drawings

[0027] Figure 1 It is a top view of an embodiment of the present invention;

[0028] Figure 2 It is a side view of an embodiment of the present invention;

[0029] Figure 3Schematic diagram of the chassis structure according to an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the installation of the fiber winding round shaft and the chassis according to an embodiment of the present invention;

[0031] Figure 5 Schematic diagram of the structure of the optical fiber clamping component according to an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of the fiber winding state according to an embodiment of the present invention;

[0033] The reference signs in the drawings are: 1, chassis; 2, optical fiber guiding component; 2-1, optical fiber introducing piece; 2-2, optical fiber leading-out piece; 3, clamping lever; 4, fiber winding round shaft; 5, strip-shaped through hole; 6, connecting rod; 7, mounting shaft; 8, sponge strip; 9, fixing piece. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Refer to Figures 1 - 6 , an embodiment of the present invention provides a fiber winding auxiliary tool for optical fiber macro-bending loss testing, including a chassis 1, an optical fiber guiding component 2, a fiber winding component and an optical fiber clamping component. The optical fiber guiding component 2, the fiber winding component and the optical fiber clamping component are all arranged on the chassis 1; the fiber winding component includes four fiber winding round shafts 4 with different diameters, and the fiber winding round shafts 4 are vertically installed on the chassis 1; the designed number of the optical fiber clamping components is the same as that of the fiber winding round shafts 4, both being four groups, and each optical fiber clamping component corresponds to a fiber winding round shaft 4; one end of the optical fiber is introduced into the device through the optical fiber guiding component 2, forms optical fiber loops with different diameters by winding around the fiber winding round shafts 4 with different diameters, and is led out of the device through the optical fiber guiding component 2, and the optical fiber clamping component exerts a clamping effect on the wound optical fiber loops.

[0036] In an embodiment of the present invention, a connecting rod 6 is fixedly installed on the fiber winding circular shaft 4. The outer diameter of the connecting rod is 5 mm. The fiber winding circular shaft 4 is installed on the chassis 1 through the connecting rod 6. Four parallel strip-shaped through holes 5 are provided on the chassis 1. The size of the strip-shaped through holes 5 is 5 mm * 70 mm, and they are arranged parallel and equidistantly at intervals of 40 mm along the length direction of the chassis 1. The connecting rod 6 passes through the strip-shaped through holes 5 and can slide within the strip-shaped through holes 5. The connecting rod 6 is detachably and fixedly connected to the chassis 1 through a fixing member 9. Specifically, the fixing member 9 is a nut. A thread is provided at the lower end of the connecting rod 6. The connecting rod 6 passes through the strip-shaped through hole 5 of the chassis, and is fixed from the bottom of the chassis 1 with the nut 9. The fiber winding assembly fixed on the strip-shaped through hole 5 can adjust its position by loosening the nut and sliding the connecting rod 6.

[0037] In this embodiment, the optical fiber clamping member includes a mounting shaft 7, a clamping pressure rod 3, and a sponge strip 8. The mounting shaft 7 is fixedly arranged on the chassis 1, corresponding to the four strip-shaped through holes 5 one by one. The distance between the mounting shaft 7 and the corresponding strip-shaped through hole 5 is 15 mm. The clamping pressure rod 3 is rotatably connected to the mounting shaft 7. Each clamping pressure rod 3 corresponds to a fiber winding circular shaft 4. The sponge strip 8 is fixed on the clamping pressure rod 3. The sponge strip 8 can rotate towards the fiber winding circular shaft 4 under the drive of the clamping pressure rod 3 and be in close contact with the fiber winding circular shaft 4 to play a clamping role. The length of the sponge strip 8 is the same as the length of the fiber winding circular shaft 4, both being 80 mm. The thickness of the sponge strip 8 is 10 mm, and the width is 10 mm.

[0038] In this embodiment, the optical fiber guiding assembly 2 includes an optical fiber introducing member 2-1 and an optical fiber extracting member 2-2. The optical fiber introducing member 2-1 and the optical fiber extracting member 2-2 are respectively arranged on both sides of the fiber winding assembly to realize the functions of optical fiber introduction and extraction. Specifically, the optical fiber introducing member 2-1 and the optical fiber extracting member 2-2 are rectangular sponge blocks. A crack for the optical fiber to pass through is provided on the sponge block. The position of the crack corresponds to the position where the optical fiber clamping member contacts the fiber winding circular shaft 4. The width of the crack is less than 0.5 mm. The cracks of the optical fiber guiding member, the gaps where the fiber winding assembly and the clamping pressure rod fit are all on the same straight line.

[0039] In this embodiment, two strip-shaped mounting grooves are further provided on the chassis 1, respectively located at the two ends of the edge of the chassis 1. The distance between the strip-shaped mounting groove and the adjacent strip-shaped through hole 5 is 25 mm. The optical fiber introducing member 2-1 and the optical fiber extracting member 2-2 are respectively fixed on the chassis 1 through the strip-shaped mounting grooves. The heights of the optical fiber introducing member 2-1 and the optical fiber extracting member 2-2 on the chassis 1 are the same as the height of the fiber winding circular shaft 4.

[0040] The application method of the present invention:

[0041] S1. Select the fiber winding circular shaft 4 with the corresponding radius according to the type of optical fiber. In this embodiment, three fiber winding circular shafts 4 with radii of 7.5 mm, 10 mm, and 15 mm are selected and installed on the tooling chassis 1 as required, so that the gaps where the cracks of the optical fiber guiding assembly, the fiber winding assembly, and the clamping component fit are all on the same straight line, and then the test work can be started;

[0042] S2. Pass one end of the optical fiber to be tested through the crack of the optical fiber introduction part 2-1, then wind the optical fiber around the fiber winding circular shaft 4 with a radius of 7.5 mm, slightly tighten the optical fiber, clamp the optical fiber with the corresponding clamping pressure rod 3, and then pass the optical fiber through the crack of the optical fiber extraction part 2-2 at the other end, and start to test the power of the optical fiber in the bent state;

[0043] S3. After the test instrument tests the power of the optical fiber in the bent state, loosen the clamping pressure rod 3, remove the optical fiber on the fiber winding circular shaft 4, straighten the optical fiber to a non-bent state, and then test the power of the optical fiber in the non-bent state. After comparing the two test powers, the macro-bending loss of this section of the optical fiber can be obtained;

[0044] S4. Repeat steps S2 and S3 to complete the macro-bending loss tests of the sizes with radii of 10 mm and 15 mm with different numbers of winding turns according to the required test requirements.

[0045] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A fiber winding auxiliary tooling for fiber optic macro-bending loss testing, characterized in that, it includes a chassis (1), a fiber optic guiding component (2), a fiber winding component and a fiber optic clamping component. The fiber optic guiding component (2), the fiber winding component and the fiber optic clamping component are all arranged on the chassis (1); the fiber winding component includes a plurality of fiber winding circular shafts (4) with different diameters, and the fiber winding circular shafts (4) are vertically installed on the chassis (1); the designed number of the fiber optic clamping components is the same as that of the fiber winding circular shafts (4), and each fiber optic clamping component corresponds to one fiber winding circular shaft (4); one end of the fiber optic is introduced into the device through the fiber optic guiding component (2), forms fiber optic loops with different diameters by surrounding different diameters of fiber winding circular shafts (4), and is led out of the device through the fiber optic guiding component (2), and the fiber optic clamping component exerts a clamping effect on the wound fiber optic loops; The plurality of fiber winding circular shafts (4) with different diameters are in a straight line, and the fiber optic clamping components with the same number as and respectively corresponding to the fiber winding circular shafts (4) are also in a straight line; in the state of clamping the fiber optic, the cracks of the fiber optic guiding component (2), the gaps where the fiber winding circular shafts (4) and the fiber optic clamping components are in contact are all on the same straight line.

2. The fiber winding auxiliary tooling for fiber optic macro-bending loss testing according to claim 1, characterized in that, a connecting rod (6) is fixedly installed on the fiber winding circular shaft (4), and the fiber winding circular shaft (4) is installed on the chassis (1) through the connecting rod (6); a plurality of parallel strip-shaped through holes (5) are arranged on the chassis (1), the connecting rod (6) passes through the strip-shaped through holes (5), and can slide in the strip-shaped through holes (5); the connecting rod (6) is detachably and fixedly connected to the chassis (1) through a fixing member (9).

3. The fiber winding auxiliary tooling for fiber optic macro-bending loss testing according to claim 2, characterized in that, the fixing member (9) is a nut, the connecting rod (6) is provided with threads, and the connecting rod (6) is threadedly connected to the chassis (1).

4. The fiber winding auxiliary tooling for fiber optic macro-bending loss testing according to claim 1, characterized in that, the fiber optic clamping component includes a mounting shaft (7), a clamping pressure bar (3) and a sponge strip (8); the mounting shaft (7) is fixedly arranged on the chassis (1), the clamping pressure bar (3) is rotatably connected to the mounting shaft (7), the sponge strip (8) is fixed on the clamping pressure bar (3), and the sponge strip (8) can rotate towards the fiber winding circular shaft (4) under the drive of the clamping pressure bar (3) and be in close contact with the fiber winding circular shaft (4) to play a clamping role.

5. The fiber winding auxiliary tooling for fiber optic macro-bending loss testing according to claim 4, characterized in that, the length of the sponge strip (8) is the same as the length of the fiber winding circular shaft (4), both being 80 mm.

6. The fiber winding auxiliary tooling for fiber optic macro-bending loss testing according to claim 1, characterized in that, the fiber optic guiding component (2) includes a fiber optic introducing part (2-1) and a fiber optic leading-out part (2-2), and the fiber optic introducing part (2-1) and the fiber optic leading-out part (2-2) are respectively arranged on both sides of the fiber winding component to realize the functions of fiber optic introduction and leading-out.

7. The fiber winding auxiliary tooling for fiber optic macro-bending loss testing according to claim 6, characterized in that, the fiber optic inlet member (2-1) and the fiber optic outlet member (2-2) are rectangular sponge blocks, and cracks for the fiber optic to pass through are provided on the sponge blocks; the positions of the cracks correspond to the positions where the fiber optic clamping member and the fiber winding circular shaft (4) contact.

8. The fiber winding auxiliary tooling for fiber optic macro-bending loss testing according to claim 6, characterized in that, a strip-shaped mounting groove is further provided on the chassis (1), and the fiber optic inlet member (2-1) and the fiber optic outlet member (2-2) are respectively fixed on the chassis (1) through the strip-shaped mounting groove.

9. The fiber winding auxiliary tooling for fiber optic macro-bending loss testing according to claim 6, characterized in that, the heights of the fiber optic inlet member (2-1) and the fiber optic outlet member (2-2) on the chassis (1) are the same as the height of the fiber winding circular shaft (4).

10. An application method of the fiber winding auxiliary tooling for fiber optic macro-bending loss testing based on claim 6, characterized in that, it includes the following steps: S1. Select several fiber winding circular shafts (4) with different radii according to the type of fiber optic, install them on the chassis (1) as required, so that the gaps where the cracks of the fiber optic guiding assembly (2), the fiber winding circular shaft (4), and the fiber optic clamping member fit are all on the same straight line, and then start the testing work; S2. For the fiber optic to be tested, after one end passes through the crack of the fiber optic inlet member (2-1), wind the fiber optic around a fiber winding circular shaft (4) and then slightly tighten the fiber optic, clamp the fiber optic with the corresponding clamping lever (3), and then pass the fiber optic through the crack of the fiber optic outlet member (2-2) at the other end, and start testing the power of the fiber optic in the bent state; S3. After the testing instrument finishes testing the power of the fiber optic in the bent state, loosen the clamping lever (3), remove the fiber optic on the fiber winding circular shaft (4), arrange the fiber optic to the non-bent state, and then test the power of the fiber optic in the non-bent state. After comparing the two test powers, obtain the macro-bending loss of this section of the fiber optic; S4. Repeat steps S2 and S3, and complete the macro-bending loss testing of fiber optics with different radii with different numbers of winding turns according to the required testing requirements.

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