CN113960716A - Welding method of ultralow-loss optical fiber - Google Patents
Welding method of ultralow-loss optical fiber Download PDFInfo
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- CN113960716A CN113960716A CN202111124264.4A CN202111124264A CN113960716A CN 113960716 A CN113960716 A CN 113960716A CN 202111124264 A CN202111124264 A CN 202111124264A CN 113960716 A CN113960716 A CN 113960716A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 176
- 238000003466 welding Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000011521 glass Substances 0.000 claims abstract description 27
- 230000004927 fusion Effects 0.000 claims abstract description 22
- 238000007526 fusion splicing Methods 0.000 claims abstract description 14
- 239000000428 dust Substances 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- 230000003287 optical effect Effects 0.000 claims description 18
- 235000019441 ethanol Nutrition 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005201 scrubbing Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002674 ointment Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- JACVSMLEPBMVFQ-RQRRAWMESA-N (2r)-2-[4-(2-hydroxyethyl)triazol-1-yl]-n-[11-[4-[4-[4-[11-[[(2s)-2-[4-(2-hydroxyethyl)triazol-1-yl]-4-methylsulfanylbutanoyl]amino]undecanoyl]piperazin-1-yl]-6-[2-[2-(2-prop-2-ynoxyethoxy)ethoxy]ethylamino]-1,3,5-triazin-2-yl]piperazin-1-yl]-11-oxoundecy Chemical compound N1([C@H](CCSC)C(=O)NCCCCCCCCCCC(=O)N2CCN(CC2)C=2N=C(NCCOCCOCCOCC#C)N=C(N=2)N2CCN(CC2)C(=O)CCCCCCCCCCNC(=O)[C@H](CCSC)N2N=NC(CCO)=C2)C=C(CCO)N=N1 JACVSMLEPBMVFQ-RQRRAWMESA-N 0.000 description 1
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- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Images
Classifications
-
- 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
-
- 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
- G02B6/245—Removing protective coverings of light guides before coupling
-
- 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
- G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting
-
- 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
- G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
Abstract
The invention discloses a fusion splicing method of an ultra-low loss optical fiber, which comprises a transparent glass cover, optical fibers and a fusion splicer, wherein the optical fibers further comprise a first optical fiber and a second optical fiber; according to the invention, the transparent glass cover is arranged, when the optical fibers are welded, the manufactured first optical fiber and the manufactured second optical fiber are placed in a vacuum environment, and as dust and gas impurities in the transparent glass cover of the vacuum environment are nearly absent, the welding is carried out in a very clean environment, and when the first optical fiber and the second optical fiber are welded, the gas impurities and dust contained in a joint can be reduced, so that the loss value of the optical fiber E can be reduced, the standard reaching rate of the once-welded optical fiber is improved, the construction difficulty is reduced, and the construction period is shortened.
Description
Technical Field
The invention relates to the technical field of optical fiber fusion processing, in particular to a fusion method of an ultralow-loss optical fiber.
Background
In the field of optical fiber fusion, the loss of a general joint of a general conventional optical fiber 652D is 0.06db, and with the appearance of an ultra-low loss optical fiber G.654E, an operator tries to apply the optical fiber in a long-distance optical cable, the novel G.654.E optical fiber is used, the arrangement of a relay station can be reduced by virtue of the characteristic of low loss of the novel G.654.E optical fiber, ultra-long-distance, ultra-large capacity and ultra-high speed optical communication transmission is realized, the system requirement of 400G or above 400G in the future is met, the loss requirement of the optical fiber fusion of the ultra-low loss optical fiber G.654E is generally 0.025db, the fusion quality requirement is high, the difficulty is higher, and higher requirements are provided for fiber fusion equipment and technology.
In actual engineering construction, the standard reaching rate of the primary fused fiber of the 652D optical fiber is generally 60%, the loss value of the optical fiber fusion of the ultra-low loss optical fiber 654E is difficult to reach the standard, the standard reaching rate of the primary fused fiber is generally about 30%, great difficulty is increased for construction, and the construction period is prolonged.
Disclosure of Invention
The invention aims to provide a fusion splicing method of an ultra-low loss optical fiber, which aims to solve the technical problems of reducing the joint loss of the ultra-low loss G.654E optical fiber in the fused fiber and improving the primary fused fiber standard reaching rate of the fused fiber.
In order to achieve the purpose, the invention provides the following technical scheme: the fusion splicing method of the ultra-low loss optical fiber comprises a transparent glass cover, optical fibers and a fusion splicer, wherein the optical fibers further comprise first optical fibers and second optical fibers, two V-shaped grooves and two electrode rods are arranged on the fusion splicer, one end of each V-shaped groove is hermetically connected with the transparent glass cover, the first optical fibers and the second optical fibers are respectively inserted into the two V-shaped grooves, a motor for driving the optical fibers to move is installed on each V-shaped groove, sealing sleeves are respectively adhered to the upper surface and the lower surface of the transparent glass cover, the sealing sleeves are made of elastic materials, the electrode rods are inserted into the sealing sleeves, and the electrode rods are slidably connected with the sealing sleeves:
s: one end of the vacuum tube is hermetically connected with a vacuum pump, the transparent glass cover is vacuumized, and the vacuumizing time is not less than 10 minutes;
s102: cleaning before welding, namely cleaning the V-shaped groove, the optical fiber presser foot, the optical fiber cutter and the objective lens by using alcohol;
s103: stripping the optical cable and loosening the sheath;
s104: manufacturing end faces of the first optical fiber and the second optical fiber;
s105: placing and welding the optical fibers, respectively placing the first optical fiber and the second optical fiber obtained in the step S104 into two V-shaped grooves of a welding machine, and enabling the tail ends of the optical fibers to be positioned in front of the edges of the V-shaped grooves and the tips of the electrode rods, closing the windshield after the placement is finished, and automatically starting welding by the welding machine;
s106: removing the spliced optical fiber in the S105;
s107: the optical fiber spliced in S106 is carefully and naturally wound around the optical fiber accommodating tray.
Preferably, the fusion splicer is maintained in an optimum state for maintenance items: and the objective lens, the V-shaped groove and the electrode are used for calibrating the welding machine before welding.
Preferably, in S102, the bottom of the V-groove, the fiber presser foot, the fiber cutter and the objective lens are scrubbed with pure alcohol with a concentration of 99% or more, and after scrubbing, the residual alcohol on the bottom of the V-groove, the fiber presser foot, the fiber cutter and the surface of the objective lens is absorbed with absorbent cotton, so that the tip of the electrode rod cannot be touched during scrubbing.
Preferably, in S103, an optical cable with a diameter of 1M is selected, the optical cable is fixed and cannot be twisted when the optical cable is stripped, the ointment is wiped off by using dust-free paper, and the stripped optical cable is placed into the splice closure.
Preferably, in S103, the loose tube is peeled off, the bare optical fiber is wiped clean with alcohol, and the optical fibers of different bundles and different colors are separately passed through the heat-shrinkable tube.
Preferably, in S104, the step of manufacturing the end faces of the first optical fiber and the second optical fiber is as follows:
s201: stripping the optical fiber coating by using a fiber stripping pliers at an angle of 45 degrees in parallel;
s202: wiping the optical fiber with a piece of non-dust paper dipped with absolute ethyl alcohol every time the stripping length is 30-40mm, so that no residual alcohol, cotton fiber, coating debris and the like exist, and the Michler's sound is heard to indicate that the optical fiber is clean;
s203: the fusion splicer is used for cutting the end face with an original cutter, the optical fiber is fixed before cutting, the cleaning blade is wiped by absolute ethyl alcohol, the blade is rotated to ensure the quality of the edge, the cutting angle of the end face of the optical fiber is generally controlled to be less than or equal to 1 degree, and the cut bare optical fiber is reserved for 14mm-18 mm.
S204: and putting the cut optical fiber S203 into the V-shaped groove, and putting the end of the optical fiber to be welded into a transparent glass cover through the motor to be welded.
Preferably, in S105, the end of the optical fiber is located in front of the edge of the V-groove and the tip of the electrode rod, and the bare fiber head is 1mm away from the electrode, and the bending direction is upward when the bent optical fiber is encountered.
Preferably, in S106, the fused optical fiber is removed from the transparent glass cover by turning on the motor on one side of the second optical fiber, and the optical fiber is entirely moved into the heating furnace.
Preferably, in S107, the radial dimension of the optical fiber wound in the storage reel is not less than 4 cm.
Preferably, in S105, the welding machine is placed in the welding environment for not less than ten minutes, the welding temperature is 0 ℃ to 25 ℃, the humidity is not dew, and the wind and rain are sheltered.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the transparent glass cover is arranged, when the optical fibers are welded, the manufactured first optical fiber and the manufactured second optical fiber are placed in a vacuum environment, and as dust and gas impurities in the transparent glass cover of the vacuum environment are nearly absent, the welding is carried out in a very clean environment, and when the first optical fiber and the second optical fiber are welded, the gas impurities and dust contained in a joint can be reduced, so that the loss value of the optical fiber E can be reduced, the standard reaching rate of the once-welded optical fiber is improved, the construction difficulty is reduced, and the construction period is shortened.
Drawings
FIG. 1 is a schematic view of a fiber welding structure according to the present invention;
FIG. 2 is a process flow diagram of the present invention;
FIG. 3 is a flow chart of the process for making the end face of an optical fiber according to the present invention.
In the figure: 1. a V-shaped groove; 2. a motor; 3. a transparent glass cover; 4. a first optical fiber; 5. an electrode rod; 6. sealing sleeves; 7. a vacuum tube; 8. a second optical fiber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the fusion splicing method of the ultra-low loss optical fiber comprises a transparent glass cover 3, the optical fiber and a fusion splicer, wherein the optical fiber further comprises a first optical fiber 4 and a second optical fiber 8, the fusion splicer is provided with two V-shaped grooves 1 and two electrode rods 5, one end of each V-shaped groove 1 is hermetically connected with the transparent glass cover 3, the two V-shaped grooves 1 are respectively spliced with the first optical fiber 4 and the second optical fiber 8, the V-shaped grooves 1 are provided with motors 2 for driving the optical fiber to move, seal sleeves 6 are respectively stuck to the upper surface and the lower surface of the transparent glass cover 3, the seal sleeves 6 are made of elastic materials, the electrode rods 5 are spliced on the seal sleeves 6, and the electrode rods 5 are slidably connected with the seal sleeves 6, and further comprises the following steps:
s101: one end of the vacuum tube 7 is hermetically connected with a vacuum pump, the transparent glass cover 3 is vacuumized for not less than 10 minutes, the transparent glass cover 3 is vacuumized to be in an environment close to vacuum with the pressure less than 0.3MPA, and the standing time is not less than 10 minutes, so that the transparent glass cover 3 can keep an environment without dust or gas impurities;
s102: cleaning before welding, namely cleaning the V-shaped groove 1, the optical fiber presser foot, the optical fiber cutter and the objective lens by using alcohol;
s103: stripping the optical cable and loosening the sheath;
s104: manufacturing end faces of the first optical fiber 4 and the second optical fiber 8;
s105: placing and welding optical fibers, respectively placing the first optical fiber 4 and the second optical fiber 8 obtained in the step S104 into the two V-shaped grooves 1 of the welding machine, enabling the tail ends of the optical fibers to be located in front of the edges of the V-shaped grooves 1 and the tips of the electrode rods 5, closing the windshield after the placement is finished, automatically starting welding by the welding machine, and limiting the optical fibers along the length direction of the V-shaped grooves;
s106: removing the spliced optical fiber in the S105;
s107: and C, the optical fibers spliced in the S106 are carefully and naturally coiled on the optical fiber accommodating disc, the reserved space is utilized to coil the optical fibers to the maximum extent, the additional loss of the coiled optical fibers is reduced, the radius R of the coiled optical fibers is not less than 4cm, and the optical fibers are coiled after all the optical fibers are tested, so that the phenomenon that the optical fibers are coiled for many times due to the welding rework of a small amount of optical fibers is avoided.
When with the optical fiber fusion, put into vacuum environment through first optic fibre 4 and the second optic fibre 8 with making, because dust and gaseous impurity are close not to in vacuum environment's the transparent glass cover 3, make the fusion go on in very clean environment, when with first optic fibre 4 and the 8 butt fusion of second optic fibre, can reduce the gaseous impurity and the dust that contain in the joint, and then can reduce optic fibre 654E's loss value, improve once melting fibre standard rate, the degree of difficulty of construction has been reduced, construction cycle has been shortened.
Wherein, the fusion splicer is maintained in an optimal state for maintenance items: and the objective lens, the V-shaped groove and the electrode are used for calibrating the welding machine before welding.
In S102, the bottom of the V-shaped groove, the optical fiber presser foot, the optical fiber cutter and the objective lens are scrubbed by pure alcohol with the concentration of more than 99%, and after scrubbing, residual alcohol on the bottom of the V-shaped groove, the optical fiber presser foot, the optical fiber cutter and the surface of the objective lens is absorbed by absorbent cotton, so that the tip of the electrode rod 5 cannot be touched in the scrubbing process.
In S103, an optical cable with the diameter of 1M is selected, the optical cable is fixed and cannot be twisted when the optical cable is stripped, the ointment is wiped cleanly by using dust-free paper, and the stripped optical cable is placed into the splice closure.
In S103, the loose tube is stripped, the bare optical fiber is wiped clean with alcohol, and optical fibers of different bundles and different colors are separated and pass through the heat-shrinkable tube.
In S104, the steps of manufacturing the end faces of the first optical fiber 4 and the second optical fiber 8 are as follows:
s201: stripping the optical fiber coating by using a fiber stripping pliers at an angle of 45 degrees in parallel;
s202: wiping the optical fiber with a piece of non-dust paper dipped with absolute ethyl alcohol every time the stripping length is 30-40mm, so that no residual alcohol, cotton fiber, coating debris and the like exist, and the Michler's sound is heard to indicate that the optical fiber is clean;
s203: the fusion splicer is used for cutting the end face with an original cutter, the optical fiber is fixed before cutting, the cleaning blade is wiped by absolute ethyl alcohol, the blade is rotated to ensure the quality of the edge, the cutting angle of the end face of the optical fiber is generally controlled to be less than or equal to 1 degree, and the cut bare optical fiber is reserved for 14mm-18 mm.
S204: and (3) putting the cut optical fiber in the V-shaped groove 1 in S203, and putting one end of the optical fiber to be welded into the transparent glass cover 3 through the motor 2 to be welded.
When the end face is manufactured, the conditions of breakage, burrs and inclined planes are avoided.
In S105, the end of the optical fiber is located at the edge of the V-groove 1 and before the tip of the electrode rod 5, the bare fiber head is 1mm away from the electrode, and the bending direction is upward when the bent optical fiber is encountered.
In S106, the fusion-spliced optical fiber is removed from the transparent glass cover 3 by turning on the motor 2 on the side of the second optical fiber 8, and the optical fiber is entirely moved into the heating furnace.
In S107, the radius of the optical fiber wound by the accommodating disc is not less than 4 cm.
In S105, the welding machine is placed in a welding environment for not less than ten minutes, the welding temperature is 0-25 ℃, the humidity is not dew, the wind and rain are avoided, and the welding mode is selected: AUTO or SM-AUTO, when the fusion loss is high, SM-SM mode can be tried, and the discharge time is prolonged.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The fusion splicing method of the ultra-low loss optical fiber is characterized by comprising a transparent glass cover (3), the optical fiber and a fusion splicer, wherein the optical fiber further comprises a first optical fiber (4) and a second optical fiber (8), the fusion splicer is provided with two V-shaped grooves (1) and two electrode rods (5), one end of each V-shaped groove (1) is hermetically connected with the transparent glass cover (3), the two V-shaped grooves (1) are respectively spliced with the first optical fiber (4) and the second optical fiber (8), the V-shaped grooves (1) are provided with motors (2) for driving the optical fiber to move, the upper surface and the lower surface of the transparent glass cover (3) are respectively stuck with a sealing sleeve (6), the sealing sleeves (6) are made of elastic materials, the sealing sleeves (6) are spliced with the electrode rods (5), and the electrode rods (5) are in sliding connection with the sealing sleeves (6), also comprises the following steps:
s101: one end of the vacuum tube (7) is hermetically connected with a vacuum pump, the transparent glass cover (3) is vacuumized, and the vacuumizing time is not less than 10 minutes;
s102: cleaning before welding, namely cleaning the V-shaped groove (1), the optical fiber presser foot, the optical fiber cutter and the objective lens by using alcohol;
s103: stripping the optical cable and loosening the sheath;
s104: manufacturing end faces of the first optical fiber (4) and the second optical fiber (8);
s105: placing the optical fibers and welding, respectively placing the first optical fiber (4) and the second optical fiber (8) obtained in the step S104 into the two V-shaped grooves (1) of the welding machine, enabling the tail ends of the optical fibers to be located in front of the edges of the V-shaped grooves (1) and the tips of the electrode rods (5), closing the windshield after placement is finished, and automatically starting welding by the welding machine;
s106: removing the spliced optical fiber in the S105;
s107: the optical fiber spliced in S106 is carefully and naturally wound around the optical fiber accommodating tray.
2. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: maintaining the fusion splicer in an optimal state: and the objective lens, the V-shaped groove and the electrode are used for calibrating the welding machine before welding.
3. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: in the step S102, the bottom of the V-shaped groove, the optical fiber presser foot, the optical fiber cutter and the objective lens are scrubbed by using pure alcohol with the concentration of more than 99%, and then the residual alcohol on the bottom of the V-shaped groove, the optical fiber presser foot, the optical fiber cutter and the surface of the objective lens is absorbed by using absorbent cotton, so that the tip of the electrode rod (5) cannot be touched in the scrubbing process.
4. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: and S103, selecting an optical cable with the diameter of 1M, fixing the optical cable, enabling the optical cable not to be twisted when stripping the optical cable, wiping the ointment clean by using dust-free paper, and putting the stripped optical cable into a splice closure.
5. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: in S103, the loose sleeve is stripped, the bare optical fiber is wiped clean by alcohol, and optical fibers of different bundles of tubes and different colors are separated and penetrate through the heat-shrinkable sleeve.
6. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: in S104, the steps of manufacturing the end faces of the first optical fiber (4) and the second optical fiber (8) are as follows:
s201: stripping the optical fiber coating by using a fiber stripping pliers at an angle of 45 degrees in parallel;
s202: wiping the optical fiber with a piece of non-dust paper dipped with absolute ethyl alcohol every time the stripping length is 30-40mm, so that no residual alcohol, cotton fiber, coating debris and the like exist, and the Michler's sound is heard to indicate that the optical fiber is clean;
s203: the fusion splicer is used for cutting the end face with an original cutter, the optical fiber is fixed before cutting, the cleaning blade is wiped by absolute ethyl alcohol, the blade is rotated to ensure the quality of the edge, the cutting angle of the end face of the optical fiber is generally controlled to be less than or equal to 1 degree, and the cut bare optical fiber is reserved for 14mm-18 mm.
S204: and (3) putting the optical fiber cut in the S203 into the V-shaped groove (1), and putting one end of the optical fiber to be welded into the transparent glass cover (3) through the motor (2) to be welded.
7. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: in S105, the tail end of the optical fiber is located at the edge of the V-shaped groove (1) and in front of the tip of the electrode rod (5), the head of the bare fiber is 1mm away from the electrode, and when the bent optical fiber is encountered, the bending direction is upward.
8. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: in S106, the fused optical fiber is removed from the transparent glass cover (3) by opening the motor (2) on one side of the second optical fiber (8), and the optical fiber is completely moved into the heating furnace.
9. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: in S107, the radius of the optical fiber wound by the accommodating disc is not less than 4 cm.
10. The fusion splicing method of an ultra-low loss optical fiber according to claim 1, wherein: and S105, placing the welding machine in a welding environment for not less than ten minutes, wherein the welding temperature is 0-25 ℃, the humidity is not dew, and the welding machine is sheltered from wind and rain.
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| CN202111124264.4A CN113960716A (en) | 2021-09-24 | 2021-09-24 | Welding method of ultralow-loss optical fiber |
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| CN104181648A (en) * | 2014-07-07 | 2014-12-03 | 中国科学院上海光学精密机械研究所 | Hollow-photon-crystal-fiber gas absorbing pool and manufacturing method thereof |
| CN107390322A (en) * | 2017-09-14 | 2017-11-24 | 南京吉隆光纤通信股份有限公司 | The electrode welding device of optical fiber splicer four |
| CN209231567U (en) * | 2019-01-28 | 2019-08-09 | 北京大盟创业科技有限公司 | Soft glass fiber fusion splicing device |
| CN209231566U (en) * | 2019-01-28 | 2019-08-09 | 北京大盟创业科技有限公司 | Polarization maintaining optical fibre welding system |
| CN111352188A (en) * | 2020-01-09 | 2020-06-30 | 陕西华燕航空仪表有限公司 | Optical fiber fusion splicing method |
| CN112394451A (en) * | 2020-12-10 | 2021-02-23 | 安徽长荣光纤光缆科技有限公司 | Novel optical fiber connection method |
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