CN111352188A - Optical fiber fusion splicing method - Google Patents
Optical fiber fusion splicing method Download PDFInfo
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- CN111352188A CN111352188A CN202010024136.1A CN202010024136A CN111352188A CN 111352188 A CN111352188 A CN 111352188A CN 202010024136 A CN202010024136 A CN 202010024136A CN 111352188 A CN111352188 A CN 111352188A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch
Abstract
The invention provides an optical fiber fusion splicing method, which is used for the fusion splicing of superfine optical fibers and comprises the following steps: (1) removing the optical fiber coating layer by 30-40 mm, and wiping the optical fiber coating layer by absolute ethyl alcohol; (2) clamping the optical fiber by using a clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm; (3) cutting the optical fiber by using a cutting machine, wherein the cutting angle is less than or equal to 1 degree; (4) placing the cut optical fiber in a fusion splicer for fusion splicing, inputting the cladding diameter of the optical fiber into the fusion splicer, setting the clean discharge power to be special 100-200 bit, setting the clean discharge time to be 60-100 ms, setting the interval between the end faces of the optical fiber to be 10-15 μm, setting the pre-melting power of the optical fiber to be special 60-special 120bit, setting the pre-melting time of the optical fiber to be 10-50 ms, setting the main discharge power to be special 30-special 100bit, setting the main discharge time to be 1500-2000 ms, setting the re-discharge power to be special 200-special 300bit, setting the re-discharge time to be 600-800 ms, and setting the optical fiber countershaft method to be closed; (5) the fusion-spliced optical fiber fusion splice points are coated using a coating machine. The optical fiber fusion splicing method provided by the invention is suitable for the fusion splicing of superfine warp optical fibers, has good fusion splicing effect and has practical value in the optical fiber technology.
Description
Technical Field
The invention relates to the technical field of optical fiber fusion, in particular to an optical fiber fusion method.
Background
Optical fiber is the mainstream transmission medium at present, and has the advantages of large transmission bandwidth, large communication capacity, low loss, no electromagnetic interference, small diameter, light weight, rich raw material sources and the like, so the optical fiber is widely applied to communication, television and data transmission networks. For an optical fiber device, the diameter of the optical fiber directly affects the physical volume of the optical fiber device, for example, when manufacturing an optical fiber gyroscope, the size of the optical fiber gyroscope can be reduced by adopting the ultra-thin optical fiber, and the length of the optical fiber can be increased by a gyroscope with the same size, so that the precision of the optical fiber gyroscope is improved. In addition, the ultra-fine diameter optical fiber has low strain generated under the same curvature radius, and can improve the stability, performance temperature sensitivity, reliability and the like of light transmission, so that the adoption of the ultra-fine diameter optical fiber is an important trend in the development of optical fiber devices.
In the construction of communication cables and the fabrication of fiber optic devices, it is often necessary to fusion splice two optical fibers to one another. At present, the optical fiber fusion splicing technology mainly aims at optical fibers with common diameters, no proper fusion splicing method exists for the fusion splicing of optical fibers with superfine diameters, and if the fusion splicing method of the common optical fibers is directly applied to the optical fibers with superfine diameters, the optical fibers are subjected to poor phenomena such as excessive melting and the like, and the optical fibers are failed in fusion splicing. Therefore, a fusion splicing method suitable for fusion splicing of ultra-fine diameter optical fibers is required.
Disclosure of Invention
The invention aims to provide a fusion splicing method suitable for fusion splicing of superfine-diameter optical fibers.
In order to achieve the above object, the present invention provides an optical fiber fusion splicing method for fusion splicing of an optical fiber having an ultra-fine diameter, comprising:
(1) removing the optical fiber coating layer by 30-40 mm, and wiping the optical fiber coating layer by absolute ethyl alcohol;
(2) clamping the optical fiber by using a clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm;
(3) cutting the optical fiber by using a cutting machine, wherein the cutting angle is less than or equal to 1 degree;
(4) placing the cut optical fiber in a fusion splicer for fusion splicing, inputting the cladding diameter of the optical fiber into the fusion splicer, setting the clean discharge power to be special 100-200 bit, the clean discharge time to be 60-100 ms, the interval between the end faces of the optical fiber to be 10-15 μm, the pre-fusion power to be special 60-120 bit, the pre-fusion time to be 10-50 ms, the main discharge power to be special 30-100 bit, the main discharge time to be 1500-2000 ms, the re-discharge power to be special 200-300 bit, and the re-discharge time to be 600-800 ms, and setting the optical fiber axis-to-axis method to be closed, wherein the fusion splicer can select an FSM-100P fusion splicer;
(5) coating the optical fiber fusion welding points which are subjected to fusion welding by using a coating machine, wherein the FSR-02 coating machine can be selected for coating the fusion welding points;
wherein the diameter of the cladding of the ultra-small diameter optical fiber is 35-60 μm.
Preferably, the optical fiber coating layer in the step (1) is removed by a chemical stripping method, and the optical fiber coating layer is stripped after the optical fiber is soaked in a dichloromethane solution for 1-2 min.
Preferably, the following components: and (4) when the optical fibers are placed in a fusion splicer for fusion splicing in the step (4), the overlapping amount of the optical fibers to be fused is 8-15 mu m, and the strength of the fusion splicing points of the optical fibers in the range is strong.
Preferably, in the step (4), when the difference between the fiber pre-melting power and the main discharging power does not exceed a special value of 30 bits, and the difference between the fiber pre-melting power and the main discharging power does not exceed the special value of 30 bits, the fiber welding quality is high, and the loss is small.
Preferably, in the step (4), the cleaning discharge power is preferably 120 bits to 160 bits, the cleaning discharge time is preferably 70 to 90ms, the fiber end face interval is preferably 12 to 14 μm, the fiber pre-melting power is preferably 70 bits to 100 bits, the fiber pre-melting time is preferably 20 to 40ms, the main discharge power is preferably 40 bits to 90 bits, the main discharge time is preferably 1700 to 1900ms, the re-discharge power is preferably 220 bits to 280 bits, and the re-discharge time is preferably 620 to 750 ms.
Preferably, the diameter of the cladding of the ultra-small diameter fiber is 35 to 45 μm.
Preferably, the ultra-small diameter optical fiber is a Panda type polarization maintaining optical fiber.
Preferably, the cutting knife of the cutting machine is CT-38, and the welding machine is FSM-100P.
Compared with the prior art, the light fusion splicing method is suitable for fusion splicing of the superfine warp fibers with the cladding diameter of 35-60 mu m, the cutting angle is less than or equal to 1 degree during cutting, the cutting end faces are parallel and vertical, subsequent fusion splicing is facilitated, the cleaning discharge power is set to be 100-200 bit special during fusion splicing, the cleaning discharge time is 60-100 ms, the ethanol residue and tiny dust discharge on the surfaces of the superfine warp fibers can be removed, and the end faces of the superfine warp fibers cannot be deformed; setting the end face interval between the optical fibers to be welded to be 10-15 microns, namely setting the interval between the end faces of the superfine warp fibers at two sides to be welded to be 10-15 microns in the pre-melting discharge stage, wherein the superfine warp fibers are not excessively melted in the pre-melting stage under the interval distance; the fiber pre-melting power is set to be 60-120 bits special, the fiber pre-melting time is 10-50 ms, the main discharge power is 30-100 bits special, the main discharge time is 1500-2000 ms, the secondary discharge power is 200-300 bits special, and the secondary discharge time is 600-800 ms. The optical fiber fusion splicing method provided by the invention is suitable for superfine warp optical fiber fusion splicing, has a good fusion splicing effect, and has a certain practical value in the optical fiber technology.
Detailed Description
To better illustrate the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to specific examples. It should be noted that the following implementation methods are further illustrative of the present invention and should not be construed as limiting the present invention.
The invention provides an optical fiber fusion splicing method, which is used for the fusion splicing of superfine optical fibers and comprises the following steps:
(1) removing the optical fiber coating layer by 30-40 mm, and wiping the optical fiber coating layer by absolute ethyl alcohol; specifically, the optical fiber coating layer is removed by a chemical stripping method, the optical fiber is soaked in a dichloromethane solution for 1-2 min, and then the optical fiber coating layer is stripped, wherein the length of the removed optical fiber coating layer can be 30mm, 32mm, 34mm, 36mm or 40 mm.
(2) And clamping the optical fiber by using a clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm, wherein the clamp is a 100-type clamp.
(3) Cutting the optical fiber by using a cutting machine, wherein the cutting angle is less than or equal to 1 degree, and specifically, a CT-38 cutting knife can be adopted to cut the optical fiber;
(4) placing the cut optical fiber in a fusion splicer for fusion splicing, inputting the cladding diameter of the optical fiber into the fusion splicer, setting the cleaning discharge power to be special 100-200 bit, specifically to be special 100bit, special 120bit, special 150bit, special 170bit, special 190bit or special 200bit, the cleaning discharge time to be 60-100 ms, specifically to be 60ms, 70ms, 75ms, 80ms or 100ms, the interval of the end face of the optical fiber to be 10-15 μm, specifically to be 10 μm, 12 μm, 13 μm, 14 μm or 15 μm, the pre-melting power of the optical fiber to be special 60-special 120bit, specifically to be special 60bit, special 80bit, special 85bit, special 90bit, special 100bit or special 120bit, the pre-melting time of the optical fiber to be 10-50 ms, specifically to be 10ms, 20ms, 35ms, 40ms or 50ms, the main discharge power to be 30-100 bit, specifically, the optical fiber splicing device can be special 30 bits, special 50 bits, special 60 bits, special 70 bits, special 90 bits or special 100 bits, the main discharge time is 1500-2000 ms, specifically 1500ms, 1700ms, 1800ms, 1900ms or 2000ms, the re-discharge power is special 200 bits-special 300 bits, specifically special 200 bits, special 220 bits, special 240 bits, special 260 bits, special 290 bits or special 300 bits, the re-discharge time is 600-800 ms, specifically 600ms, 650ms, 700ms, 750ms or 800ms, the optical fiber axis-to-axis method is set to be closed, in addition, the overlapping amount of the optical fibers to be spliced is 8-15 μm, and the difference value between the optical fiber pre-melting power and the main discharge power does not exceed the special 30 bits.
The cleaning discharge power is preferably 120 bits to 160 bits, the cleaning discharge time is preferably 70 to 90ms, the interval between the end faces of the optical fiber is preferably 12 to 14 μm, the fiber pre-melting power is preferably 70 bits to 100 bits, the fiber pre-melting time is preferably 20 to 40ms, the main discharge power is preferably 40 bits to 90 bits, the main discharge time is preferably 1700 to 1900ms, the re-discharge power is preferably 220 bits to 280 bits, and the re-discharge time is preferably 620 to 750 ms.
(5) Coating the optical fiber fusion welding points which are completely fused by using a coating machine;
wherein the diameter of the cladding of the ultra-small diameter fiber is 35-60 μm, and the ultra-small diameter fiber is a Panda type polarization maintaining fiber.
The present invention will be described in detail with reference to specific examples.
Example 1
In this embodiment, the method of fusion splicing an ultra-fine diameter optical fiber having a cladding diameter of 40 μm comprises:
(1) removing the optical fiber coating layer by 30mm, and wiping the optical fiber coating layer by absolute ethyl alcohol, specifically, removing the optical fiber coating layer by adopting a chemical stripping method, soaking the optical fiber in a dichloromethane solution for 1min, and then stripping the optical fiber coating layer;
(2) clamping the optical fiber by using a 100-type clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm;
(3) cutting the optical fiber by using a CT-38 cutter, wherein the cutting angle is less than or equal to 1 degree;
(4) placing the cut optical fiber in a fusion splicer FSM-100P for fusion splicing, inputting the cladding diameter of the optical fiber into the fusion splicer, setting the clean discharge power to be special 100bit, the clean discharge time to be 60ms, the interval of the end faces of the optical fiber to be 10 μm, the pre-fusion power to be special 60bit, the pre-fusion time to be 10ms, the main discharge power to be special 30bit, the main discharge time to be 2000ms, the re-discharge power to be special 200bit, the re-discharge time to be 800ms, the overlapping amount of the optical fiber to be fused to be 15 μm, and setting the optical fiber countershaft method to be closed;
(5) the fusion-spliced optical fiber fusion splice point is coated using a coater FSR-02.
The test of the welded superfine optical fiber shows that the welded superfine optical fiber has straight fiber core, straight outer diameter, no bubble in the welding point and low fiber welding loss.
Example 2
In this embodiment, the method of fusion splicing an ultra-fine diameter optical fiber having a cladding diameter of 60 μm comprises:
(1) removing the optical fiber coating layer by 35mm, and wiping the optical fiber coating layer by absolute ethyl alcohol, specifically, removing the optical fiber coating layer by adopting a chemical stripping method, soaking the optical fiber in a dichloromethane solution for 2min, and then stripping the optical fiber coating layer;
(2) clamping the optical fiber by using a 100-type clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm;
(3) cutting the optical fiber by using a CT-38 cutter, wherein the cutting angle is less than or equal to 1 degree;
(4) placing the cut optical fiber in a fusion splicer FSM-100P for fusion splicing, inputting the cladding diameter of the optical fiber of 60μm into the fusion splicer, setting the clean discharge power to be special 200bit, the clean discharge time to be 80ms, the interval of the end surface of the optical fiber to be 15μm, the pre-fusion power of the optical fiber to be special 120bit, the pre-fusion time of the optical fiber to be 30ms, the main discharge power to be special 100bit, the main discharge time to be 1700ms, the re-discharge power to be special 300bit, the re-discharge time to be 700ms, the overlapping amount of the optical fiber to be fused to be 10μm, and setting the optical fiber countershaft method to be closed;
(5) the fusion-spliced optical fiber fusion splice point is coated using a coater FSR-02.
The test of the welded superfine optical fiber shows that the welded superfine optical fiber has straight fiber core, straight outer diameter, no bubble in the welding point and low fiber welding loss.
Example 3
In this embodiment, the method of fusion splicing an ultra-fine diameter optical fiber having a cladding diameter of 35 μm comprises:
(1) removing the optical fiber coating layer by 40mm, and wiping the optical fiber coating layer by absolute ethyl alcohol, specifically, removing the optical fiber coating layer by adopting a chemical stripping method, soaking the optical fiber in a dichloromethane solution for 1.5min, and then stripping the optical fiber coating layer;
(2) clamping the optical fiber by using a 100-type clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm;
(3) cutting the optical fiber by using a CT-38 cutter, wherein the cutting angle is less than or equal to 1 degree;
(4) placing the cut optical fiber in a fusion splicer FSM-100P for fusion splicing, inputting the cladding diameter of the optical fiber into the fusion splicer, setting the clean discharge power to be 120bit, the clean discharge time to be 70ms, the interval of the end surface of the optical fiber to be 12 μm, the pre-fusion power to be 70bit, the pre-fusion time to be 10ms, the main discharge power to be 40bit, the main discharge time to be 1500ms, the re-discharge power to be 250bit, the re-discharge time to be 600ms, the overlapping amount of the optical fiber to be fused to be 8 μm, and setting the optical fiber countershaft method to be closed;
(5) the fusion-spliced optical fiber fusion splice point is coated using a coater FSR-02.
The test of the welded superfine optical fiber shows that the welded superfine optical fiber has straight fiber core, straight outer diameter, no bubble in the welding point and low fiber welding loss.
Example 4
In this embodiment, the cladding diameter of the ultra-fine diameter fiber is 55 μm, and the method of fusion splicing the ultra-fine diameter fiber includes:
(1) removing the optical fiber coating layer by 35mm, and wiping the optical fiber coating layer by absolute ethyl alcohol, specifically, removing the optical fiber coating layer by adopting a chemical stripping method, soaking the optical fiber in a dichloromethane solution for 2min, and then stripping the optical fiber coating layer;
(2) clamping the optical fiber by using a 100-type clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm;
(3) cutting the optical fiber by using a CT-38 cutter, wherein the cutting angle is less than or equal to 1 degree;
(4) placing the cut optical fiber in a fusion splicer FSM-100P for fusion splicing, inputting the cladding diameter of the optical fiber into the fusion splicer, setting the clean discharge power to be 150bit, the clean discharge time to be 100ms, the interval of the end faces of the optical fiber to be 15 μm, the pre-fusion power to be 80bit, the pre-fusion time to be 50ms, the main discharge power to be 60bit, the main discharge time to be 1800ms, the re-discharge power to be 250bit, the re-discharge time to be 800ms, the overlapping amount of the optical fiber to be fused to be 10 μm, and setting the optical fiber countershaft method to be closed;
(5) the fusion-spliced optical fiber fusion splice point is coated using a coater FSR-02.
The test of the welded superfine optical fiber shows that the welded superfine optical fiber has straight fiber core, straight outer diameter, no bubble in the welding point and low fiber welding loss.
Example 5
In this embodiment, the method of fusion splicing an ultra-fine diameter optical fiber having a cladding diameter of 45 μm comprises:
(1) removing the optical fiber coating layer by 35mm, and wiping the optical fiber coating layer by absolute ethyl alcohol, specifically, removing the optical fiber coating layer by adopting a chemical stripping method, soaking the optical fiber in a dichloromethane solution for 2min, and then stripping the optical fiber coating layer;
(2) clamping the optical fiber by using a 100-type clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm;
(3) cutting the optical fiber by using a CT-38 cutter, wherein the cutting angle is less than or equal to 1 degree;
(4) placing the cut optical fiber in a fusion splicer FSM-100P for fusion splicing, inputting the cladding diameter of the optical fiber into the fusion splicer, setting the clean discharge power to be 150bit, the clean discharge time to be 90ms, the interval of the end surface of the optical fiber to be 12 μm, the pre-fusion power to be 80bit, the pre-fusion time to be 40ms, the main discharge power to be 60bit, the main discharge time to be 1700ms, the re-discharge power to be 250bit, the re-discharge time to be 750ms, the overlapping amount of the optical fiber to be fused to be 10 μm, and setting the optical fiber countershaft method to be closed;
(5) the fusion-spliced optical fiber fusion splice point is coated using a coater FSR-02.
The test of the welded superfine optical fiber shows that the welded superfine optical fiber has straight fiber core, straight outer diameter, no bubble in the welding point and low fiber welding loss.
The light fusion splicing method is suitable for fusion splicing of superfine warp fibers with the cladding diameter of 35-60 mu m, the cutting angle is less than or equal to 1 degree during cutting, the cutting end faces are parallel and vertical, subsequent fusion splicing is facilitated, the cleaning discharge power is set to be 100-200 bit special during fusion splicing, the cleaning discharge time is 60-100 ms, the ethanol residue and tiny dust discharge on the surfaces of the superfine warp fibers can be removed, and the end faces of the superfine warp fibers cannot be deformed; setting the end face interval between the optical fibers to be welded to be 10-15 microns, namely setting the interval between the end faces of the superfine warp fibers at two sides to be welded to be 10-15 microns in the pre-melting discharge stage, wherein the superfine warp fibers are not excessively melted in the pre-melting stage under the interval distance; the fiber pre-melting power is set to be 60-120 bits special, the fiber pre-melting time is 10-50 ms, the main discharge power is 30-100 bits special, the main discharge time is 1500-2000 ms, the secondary discharge power is 200-300 bits special, and the secondary discharge time is 600-800 ms. The optical fiber fusion splicing method provided by the invention is suitable for superfine warp optical fiber fusion splicing, has a good fusion splicing effect, and has a certain practical value in the optical fiber technology.
The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
Claims (8)
1. An optical fiber fusion splicing method for fusion splicing of an optical fiber having an ultra-fine diameter, comprising:
(1) removing the optical fiber coating layer by 30-40 mm, and wiping the optical fiber coating layer by absolute ethyl alcohol;
(2) clamping the optical fiber by using a clamp, and enabling the optical fiber with the coating layer to extend out of the clamp by 1-2 mm;
(3) cutting the optical fiber by using a cutting machine, wherein the cutting angle is less than or equal to 1 degree;
(4) placing the cut optical fiber in a fusion splicer for fusion splicing, inputting the cladding diameter of the optical fiber into the fusion splicer, setting the clean discharge power to be special 100-200 bit, setting the clean discharge time to be 60-100 ms, setting the interval between the end faces of the optical fiber to be 10-15 μm, setting the pre-melting power of the optical fiber to be special 60-120 bit, setting the pre-melting time of the optical fiber to be 10-50 ms, setting the main discharge power to be special 30-100 bit, setting the main discharge time to be 1500-2000 ms, setting the re-discharge power to be special 200-300 bit, setting the re-discharge time to be 600-800 ms, and setting the optical fiber shaft alignment method to be closed;
(5) coating the optical fiber fusion welding points which are completely fused by using a coating machine;
wherein the diameter of the cladding of the ultra-small diameter optical fiber is 35-60 μm.
2. The optical fiber fusion splicing method according to claim 1, wherein: and (2) removing the optical fiber coating layer in the step (1), soaking the optical fiber in a dichloromethane solution for 1-2 min by adopting a chemical stripping method, and then stripping the optical fiber coating layer.
3. The optical fiber fusion splicing method according to claim 1, wherein: and (4) when the optical fibers are placed in a welding machine for welding in the step (4), the overlapping amount of the optical fibers to be welded is 8-15 mu m.
4. The optical fiber fusion splicing method according to claim 1, wherein: in the step (4), the difference between the fiber premelting power and the main discharging power does not exceed 30 bits.
5. The optical fiber fusion splicing method according to claim 1, wherein: in the step (4), the cleaning discharge power is preferably 120-160 bits special, the cleaning discharge time is preferably 70-90 ms, the interval between the end faces of the optical fibers is preferably 12-14 μm, the fiber pre-melting power is preferably 70-100 bits special, the fiber pre-melting time is preferably 20-40 ms, the main discharge power is preferably 40-90 bits special, the main discharge time is preferably 1700-1900 ms, the re-discharge power is preferably 220-280 bits special, and the re-discharge time is preferably 620-750 ms.
6. The optical fiber fusion splicing method according to claim 5, wherein: the diameter of the cladding of the ultra-small diameter optical fiber is 35-45 mu m.
7. The optical fiber fusion splicing method according to claim 1, wherein: the superfine diameter optical fiber is a Panda type polarization maintaining optical fiber.
8. The optical fiber fusion splicing method according to claim 1, wherein: the cutting knife of the cutting machine is CT-38, and the welding machine is FSM-100P.
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