CN109407214A - To the device and method of different core diameter band fibre weldings - Google Patents
To the device and method of different core diameter band fibre weldings Download PDFInfo
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- CN109407214A CN109407214A CN201710706088.2A CN201710706088A CN109407214A CN 109407214 A CN109407214 A CN 109407214A CN 201710706088 A CN201710706088 A CN 201710706088A CN 109407214 A CN109407214 A CN 109407214A
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- 239000000835 fiber Substances 0.000 title claims abstract description 129
- 238000003466 welding Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000013307 optical fiber Substances 0.000 claims abstract description 126
- 230000004927 fusion Effects 0.000 claims description 31
- 238000007526 fusion splicing Methods 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 19
- 238000005253 cladding Methods 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000003381 stabilizer Substances 0.000 abstract 6
- 230000000694 effects Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 9
- 230000008878 coupling Effects 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
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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
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- Mechanical Coupling Of Light Guides (AREA)
Abstract
The present invention provides the device and welding process of a kind of different core diameter band fibre weldings that can two kinds of core diameter fibers be carried out with welding, the device, comprising: display, controller, high-voltage power supply, discharge electrode, core adjusting device；Core adjusting device includes: welding slot, briquetting；Wherein, welding slot includes: the first access slot, the second access slot；First access slot is used to accommodate the fibre core of the first optical fiber, and the second access slot is used to accommodate the fibre core of the second optical fiber, and the core diameter of the first optical fiber is greater than the core diameter of the second optical fiber；Briquetting has the first stabilizer blade, the second stabilizer blade, and the first stabilizer blade and the second stabilizer blade are the same as high.When welding, the fibre core of the first optical fiber is placed in the first access slot, and the first stabilizer blade is pressed on the fibre core of the first optical fiber, and the fibre core of the first optical fiber of limitation is mobile；The fibre core of second optical fiber is placed in the second access slot, and the second stabilizer blade is pressed on the fibre core of the second optical fiber, and the fibre core of the second optical fiber of limitation is mobile, can improve with the fine utilization rate of heat sealing machine and the production efficiency and quality of welding product.
Description
Technical Field
The invention relates to a device and a method for welding belt fibers, in particular to a device and a method for welding belt fibers with different fiber core diameters.
Background
The existing fusion splicer with fibers comprises: display, controller, high voltage source, discharge electrode, accent core device etc. device, the accent core device includes: however, the conventional fusion splicer with fiber only can perform fusion splicing on optical fibers with the same fiber core diameter, and when the conventional fusion splicer with fiber directly performs fusion splicing on optical fibers with different fiber core diameters, the optical loss of a fusion splicing point is high, and the product requirement cannot be met.
Current optical fiber coupling is to use 3 mu m and 9 mu m single coupling technique to couple, and this technique is to use the heat sealing machine to couple a 3 mu m optic fibre and a 9 mu m optic fibre through the heat sealing machine discharge, and when the coupling butt fusion includes the area fibre of many optic fibres, its operation process is loaded down with trivial details consuming time work efficiency quite low, and the success rate is not high, and off-the-shelf light loss is big, leads to the manufacturing cost of product to improve, influences the popularization of product.
In order to improve the limitation of the existing ribbon fiber adopting a 3 μm +9 μm single coupling technology, a ribbon fiber coupling device needs to be improved and a ribbon fiber coupling technology of 3 μm +9 μm needs to be developed.
Disclosure of Invention
The invention aims to provide a device and a method for fusion welding of ribbon fibers with different fiber core diameters, which can perform fusion welding on optical fibers with two fiber core diameters, and improve the utilization rate of a ribbon fusion welding machine and the production efficiency and quality of fusion welding products.
The invention relates to a device for fusing ribbon fibers with different fiber core diameters, which comprises: the device comprises a display, a controller, a high-voltage source, a discharge electrode and a core adjusting device; the aligning device includes: welding a groove and pressing a block; wherein,
the welding tank includes: the connecting structure comprises a first connecting groove and a second connecting groove, wherein the length of the first connecting groove is smaller than that of the second connecting groove; the first connecting groove is used for accommodating the fiber core of the first optical fiber, the second connecting groove is used for accommodating the fiber core of the second optical fiber, and the diameter of the fiber core of the first optical fiber is larger than that of the fiber core of the second optical fiber;
the pressing block is provided with a first supporting leg and a second supporting leg, the first supporting leg and the second supporting leg are at the same height, during welding, the fiber core of the first optical fiber is placed in the first connecting groove, and the first supporting leg presses on the fiber core of the first optical fiber to limit the fiber core of the first optical fiber to move; the fiber core of the second optical fiber is arranged in the second connecting groove, and the second support leg is pressed on the fiber core of the second optical fiber to limit the fiber core of the second optical fiber to move.
Preferably, the first weld groove length is 30% of the second weld groove length.
Preferably, the length of the first supporting leg is less than or equal to the length of the first connecting groove, when the first supporting leg is pressed on the first connecting groove, the first supporting leg only covers all or part of the area of the first connecting groove, and does not cover the area outside the first connecting groove, so that the fiber core deformation of the first optical fiber is avoided, and the welding effect can be improved.
Preferably, the first receiving groove is fixed on the base, and the first receiving groove is fixedly connected on the base or is of an integrated structure.
More preferably, the first leg outside is equipped with the assistance foot, the bottom of assisting the foot has the difference in height with the bottom of first leg, this difference in height equals the surrounding layer thickness of first optic fibre, assist foot and first leg rigid coupling or formula structure as an organic whole, the difference in height of assisting foot and first leg has formed the step spacing, during the use, first connecting groove is arranged in to the fibre core of first optic fibre, first leg is pressed on the fibre core of first optic fibre, the fibre core of first optic fibre has been restricted and the removal of first optic fibre of surrounding layer has not been peeled off to the assistance foot pressure on arranging the first optic fibre of base in, can not arouse the fibre core deformation of first optic fibre, better first optic fibre of having fixed simultaneously, the butt fusion effect has been promoted.
The fusion splicing device for the band fibers with different fiber core diameters has the following beneficial effects: the frequency of use and the efficiency of taking fine heat sealing machine have been strengthened, have improved the production efficiency that produces different fibre core diameters and take fine (for example 3um +9um) butt fusion product for the practical popularization of different fibre core diameters and take fine (for example 3um +9um) butt fusion product.
The invention also provides a method for welding the ribbon fibers with different fiber core diameters by using the welding device, which comprises the following steps:
stripping the ends of the first and second optical fibers, wherein the stripped end of the first optical fiber is shorter than the stripped end of the second optical fiber;
placing the fiber core of the first optical fiber in the first connecting groove, enabling the outer cladding layer of the first optical fiber to abut against the outer side wall of the first connecting groove, and limiting the fiber core of the first optical fiber to move through the first support leg of the pressing block;
placing the fiber core of the second optical fiber in the second connecting groove, enabling the outer cladding layer of the second optical fiber to abut against the outer side wall of the second connecting groove, and limiting the fiber core of the second optical fiber to move through a second support leg of the pressing block;
and setting parameters for adjusting the welding machine to perform discharge welding.
Preferably, when the auxiliary leg is arranged outside the first leg of the fusion splicing device, the method further comprises the following steps of fixing the first optical fiber in an auxiliary manner: after the fiber core of the first optical fiber is arranged in the first connecting groove, the auxiliary pin presses the first optical fiber arranged on the base, and the movement of the first optical fiber without stripping the outer cladding is limited.
Preferably, the parameters are set as follows: the discharge time is 25-35 s, the pre-discharge time is 0.1-0.4 s, the discharge interval is 15-25 um, the boost amount is 20-30 um, the discharge intensity is 46-54 step, and the discharge position is 280-290 doc.
The invention has the beneficial effects that: 1. compared with the conventional single optical fiber coupling, the invention has certain operation convenience, and the finished product with the optical fiber provides convenience for the processing of the later-stage product and is not easy to damage the optical fiber;
2. the invention is the fusion between the band fibers, which improves the working efficiency and doubles the yield compared with the fusion of single optical fiber;
3. compared with the single optical fiber welding, the welding of the ribbon fiber has lower optical loss, can ensure that the utilization rate of light is improved to a certain extent, and can also ensure that the optical fiber material is fully utilized.
Compared with the existing single coupling technology of 3 mu m +9 mu m, the optical loss of the product is reduced, and the light transmitted in the optical fiber can be fully utilized, so that the effective utilization rate of the light is improved; the original single welding is changed into the multi-root welding, the production efficiency is improved by N times, the production efficiency of the product is greatly improved, a large amount of labor force required by mass production of the product is overcome, the production cost is reduced, and the method is easier to popularize in the market.
Drawings
FIG. 1 is a schematic diagram of an apparatus for fusion splicing of ribbon fibers of different core diameters;
FIG. 2 is a schematic diagram of a configuration in which optical fibers are placed in a fusion splicing tank;
FIG. 3 is a schematic diagram of one embodiment of a press block pressing against an optical fiber;
FIG. 4 is a schematic cross-sectional view of one embodiment of a press block pressing against an optical fiber;
FIG. 5 is a schematic view of another embodiment of a press block pressing against an optical fiber;
FIG. 6 is a schematic cross-sectional view of another embodiment of a press block pressing against an optical fiber.
Description of the main element symbols:
1 controller
2 display
3 high pressure source
4 discharge electrode
5 core adjusting device
51 fusion groove
51a first connecting groove
51b second connecting groove
51c first slot length
51d second slot length
51e base
52 briquetting
52a first leg
52b second leg
52c auxiliary foot
61 first optical fiber
62 second optical fiber
61d core diameter of first optical fiber
62d core diameter of second optical fiber
7 machine table
h outer cladding thickness
Detailed Description
In order to facilitate understanding and implementing the present invention by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and specific embodiments.
An apparatus for fusion splicing of ribbon fibers of different core diameters as shown in fig. 1, comprising: the welding device comprises a controller 1, a display 2, a high-voltage source 3, a discharge electrode 4 and a core adjusting device 5, wherein the display 2, the high-voltage source 3, the discharge electrode 4 and the core adjusting device 5 are respectively connected with the controller 1 and controlled by the controller 1, and the connecting mode and the control mode adopt the connecting mode and the control mode of the existing welding device.
As shown in fig. 2, 4, and 6, the alignment device 5 includes: a welding groove 51 and a pressing block 52;
as shown in fig. 2, the fusion splice tray 51 includes: the first connecting groove 51a and the second connecting groove 51b, and the length 51c of the first connecting groove is less than the length 51d of the second connecting groove (in this embodiment, the length 51c of the first connecting groove is 30% of the length 51d of the second connecting groove), the first connecting groove is set to be shorter than the second connecting groove, the first optical fiber is not exposed out of the fiber core with too long pulling length, the problem that the fiber core is easy to break is solved, and the optical fiber obtains better fixing effect and positioning effect. ),
the first groove 51a is used for accommodating the core of the first optical fiber 61, and the second groove 51b is used for accommodating the core of the second optical fiber 62, as shown in fig. 4, the core diameter 61d of the first optical fiber is larger than the core diameter 62d of the second optical fiber;
the first receiving groove 51a is fixed on the base 51e, in this embodiment, the first receiving groove 51a and the base 51e are an integrated structure, and in practical applications, the first receiving groove 51a may be fixed on the base 51e in any manner. Because the first connecting groove 51a protrudes from the surface of the base 51e, when in fusion welding, the first optical fiber 61 is arranged in the fusion welding groove, and the outer cladding of the first optical fiber 61 abuts against the outer side wall of the first connecting groove 51a, so that the optical fiber obtains better fixing effect and positioning effect.
The discharge electrode 4 is located at the center/inside of the fusion apparatus, the direction along which the optical fibers 61, 62 are placed is the outer side, and the direction away from the discharge electrode 4 is the inner side.
As shown in fig. 3 and 5, the pressing piece 52 has a first leg 52a and a second leg 52 b; the first leg 52a and the second leg 52b are at the same height, and when in fusion splicing, the first leg is pressed on the fiber core of the first optical fiber arranged in the first connecting groove to limit the fiber core of the first optical fiber to move; the second leg presses on the core of the second optical fiber disposed in the second groove to restrict movement of the core of the second optical fiber.
As shown in fig. 3 and 4, in this embodiment, an auxiliary leg 52c is disposed outside the first leg 52a, a height difference exists between the bottom of the auxiliary leg 52c and the bottom of the first leg 52a, the height difference is equal to the thickness h of the outer cladding of the first optical fiber, the auxiliary leg is fixedly connected to the first leg or is of an integrated structure, the height difference between the auxiliary leg and the first leg forms a step-shaped limit, the first leg 52a presses on the fiber core of the first optical fiber disposed in the first connecting groove 51a to limit the movement of the fiber core of the first optical fiber 61, the auxiliary leg 52c presses on the first optical fiber 61 disposed on the base to limit the movement of the first optical fiber without stripping the outer cladding, the fiber core of the first optical fiber is not deformed, and the first optical fiber is better fixed, thereby improving the fusion splicing effect.
In this embodiment, the length of the first receiving groove 51c is 30% of the length of the second receiving groove 51 d.
Because the two welding grooves have different lengths, namely the welding groove for placing 9 mu m of band fiber is shorter than the welding groove for placing 3 mu m of band fiber, the welding length is reduced, and the subsequent process faults of the product are reduced.
As shown in fig. 5 and 6, in the embodiment, the length of the first leg 52a is equal to the length of the first receiving slot 51c, and when the first leg is pressed on the first receiving slot, the first leg covers the whole area of the first receiving slot and does not cover the area of the base 51e outside the first receiving slot, so that the core deformation of the first optical fiber is not caused, and the fusion splicing effect can be improved. In practical applications, the length of the first leg 52a may be smaller than the length of the first slot 51c, and the first leg does not cause the core of the first optical fiber to deform as long as the base region outside the first slot is not covered by the first leg.
The fusion splicing device for the band fibers with different fiber core diameters has the following beneficial effects: the frequency of use and the efficiency of taking fine heat sealing machine have been strengthened, have improved the production efficiency that produces different fibre core diameters and take fine (for example 3um +9um) butt fusion product for the practical popularization of different fibre core diameters and take fine (for example 3um +9um) butt fusion product.
The invention relates to a fusion splicing device for ribbon fibers with different fiber core diameters, which is reformed in that two fusion splicing grooves are designed to have different lengths, namely the fusion splicing groove for placing the ribbon fibers with the length of 3 mu m is shorter than the fusion splicing groove for placing the ribbon fibers with the length of 9 mu m, the fusion splicing length is reduced, and the subsequent process faults of products are reduced; meanwhile, the pressing block is designed to be in a shape that one side is high and the other side is low, so that poor welding can not occur after welding of the belt fiber even if the inner diameters of the belt fiber are different during welding, and the product yield is improved.
The invention also provides a method for welding the ribbon fibers with different fiber core diameters by using the welding device, which comprises the following steps:
stripping the ends of the first and second optical fibers 61, 62, wherein the stripped end of the first optical fiber 61 is shorter than the stripped end of the second optical fiber 62;
placing the fiber core of the first optical fiber in the first connecting groove 51c, enabling the outer cladding layer of the first optical fiber to abut against the outer side wall of the first connecting groove 51c, and limiting the fiber core of the first optical fiber to move through the first support leg 52a of the pressing block;
placing the fiber core of the second optical fiber in the second connecting groove 51d, enabling the outer cladding layer of the second optical fiber to abut against the outer side wall of the second connecting groove 51d, and limiting the fiber core of the second optical fiber to move through the second support leg of the pressing block;
and setting parameters for adjusting the welding machine to perform discharge welding.
When the auxiliary leg 52c is arranged outside the first leg of the welding device, the method further comprises the following steps of assisting in fixing the first optical fiber: after the core of the first optical fiber is placed in the first connecting groove, the auxiliary leg is pressed against the first optical fiber placed on the base 51e, and the movement of the first optical fiber without the outer cladding being removed is restricted.
The method comprises the following steps: the discharge time is 25-35 s, the pre-discharge time is 0.1-0.4 s, the discharge interval is 15-25 um, the boost amount is 20-30 um, the discharge intensity is 46-54 step, and the discharge position is 280-290 doc.
The specific fusion set-up parameters and corresponding insertion loss (fusion IL should be ≦ 0.7dB) performed according to the above method are exemplified as follows:
example one:
| item | Parameter(s) |
| Time of discharge | 25 |
| Time of pre-discharge | 0.1 |
| Discharge space | 15um |
| Amount of propulsion | 20um |
| Intensity of discharge | 54step |
| Location of discharge | 290doc |
| Channel | ch1 | ch2 | ch3 | ch4 |
| IL(dB) | -0.45 | -0.61 | -0.59 | -0.39 |
Example two:
| item | Parameter(s) |
| Time of discharge | 28 |
| Time of pre-discharge | 0.4 |
| Discharge space | 20um |
| Amount of propulsion | 20um |
| Intensity of discharge | 52step |
| Location of discharge | 285doc |
| Channel | ch1 | ch2 | ch3 | ch4 |
| IL(dB) | -0.32 | -0.34 | -0.44 | -0.27 |
Example three:
| item | Parameter(s) |
| Time of discharge | 30 |
| Time of pre-discharge | 0.3 |
| Discharge space | 20um |
| Amount of propulsion | 25um |
| Intensity of discharge | 51step |
| Location of discharge | 285doc |
| Channel | ch1 | ch2 | ch3 | ch4 |
| IL(dB) | -0.22 | -0.30 | -0.22 | -0.26 |
Example four:
| item | Parameter(s) |
| Time of discharge | 33 |
| Time of pre-discharge | 0.4 |
| Discharge space | 20um |
| Amount of propulsion | 30um |
| Intensity of discharge | 50step |
| Location of discharge | 285doc |
| Channel | ch1 | ch2 | ch3 | ch4 |
| IL(dB) | -0.34 | -0.39 | -0.45 | -0.37 |
Example five:
| item | Parameter(s) |
| Time of discharge | 35 |
| Time of pre-discharge | 0.2 |
| Discharge space | 25um |
| Amount of propulsion | 30um |
| Intensity of discharge | 46step |
| Location of discharge | 280doc |
| Channel | ch1 | ch2 | ch3 | ch4 |
| IL(dB) | -0.25 | -0.48 | -0.52 | -0.30 |
The device for fusing the belt fibers with different fiber core diameters is adopted, and the two fusing grooves are designed to have different lengths, so that the fusing length is reduced, and the fixing effect on the fiber cores is improved; the device designs the briquetting into high shape on one side and low on the other side, also can obtain better fixed effect when the different fibre cores of butt fusion internal diameter, has improved the product yield.
Under the condition of using the device, the invention improves the fixing method of the fiber core/optical fiber in the fusion process, improves the parameter setting, enables the device to simultaneously perform fusion welding on a plurality of optical fibers, enhances the use frequency and efficiency of the fusion welding machine with the fiber, improves the production efficiency of fusion products for producing the fiber with different fiber core diameters (such as 3um +9um), and accelerates the practical popularization of the fusion products for the fiber with different fiber core diameters (such as 3um +9 um). When the parameter setting is beyond the range, the optical loss of the plurality of fiber cores cannot be successfully welded at the same time or the welded fiber cores cannot reach the standard.
Claims (10)
1. An apparatus for fusion splicing ribbon fibers of different core diameters, comprising: the device comprises a display, a controller, a high-voltage source, a discharge electrode and a core adjusting device; the aligning device includes: welding a groove and pressing a block; wherein, the welding groove includes: a first connecting groove and a second connecting groove, which are characterized in that,
the length of the first connecting groove is smaller than that of the second connecting groove; the first connecting groove is used for accommodating the fiber core of the first optical fiber, the second connecting groove is used for accommodating the fiber core of the second optical fiber, and the diameter of the fiber core of the first optical fiber is larger than that of the fiber core of the second optical fiber;
the pressing block is provided with a first supporting leg and a second supporting leg, the first supporting leg and the second supporting leg are at the same height, during welding, the fiber core of the first optical fiber is placed in the first connecting groove, and the first supporting leg presses on the fiber core of the first optical fiber to limit the fiber core of the first optical fiber to move; the fiber core of the second optical fiber is arranged in the second connecting groove, and the second support leg is pressed on the fiber core of the second optical fiber to limit the fiber core of the second optical fiber to move.
2. The apparatus of claim 1, wherein the first fusion groove length is 30% of the second fusion groove length.
3. The apparatus for fusion splicing ribbons of different core diameters as defined in claim 1 or 2 wherein the length of the first leg is less than or equal to the length of the first receiving groove, said first receiving groove being fixed to the base or the first receiving groove being integral with the base.
4. The apparatus for fusion splicing ribbons of different core diameters as defined in any one of claims 1 to 2 wherein said first splicing groove is fixed to said base or said first splicing groove is integrally formed with said base.
5. The apparatus of claim 4, wherein the first leg has a bottom having a height difference with a bottom of the first leg, the height difference being equal to the thickness of the cladding of the first optical fiber, the auxiliary leg is fixed to the first leg or is an integral structure, the height difference between the auxiliary leg and the first leg forms a step-shaped limit, when in use, the core of the first optical fiber is placed in the first receiving groove, the first leg presses on the core of the first optical fiber to limit the movement of the core of the first optical fiber, and the auxiliary leg presses on the first optical fiber placed on the base to limit the movement of the first optical fiber without stripping the cladding.
6. A method of fusion splicing ribbon fibers of different core diameters, comprising: the device comprises a display, a controller, a high-voltage source, a discharge electrode and a core adjusting device;
the aligning device includes: welding a groove and pressing a block; wherein, the welding groove includes: a first receiving groove, a second receiving groove, and,
the length of the first connecting groove is smaller than that of the second connecting groove; the first connecting groove is used for accommodating the fiber core of the first optical fiber, the second connecting groove is used for accommodating the fiber core of the second optical fiber, and the diameter of the fiber core of the first optical fiber is larger than that of the fiber core of the second optical fiber;
the pressing block is provided with a first supporting leg and a second supporting leg, and the first supporting leg and the second supporting leg are as high as each other;
the device is used for welding the ribbon fibers with different core diameters in the following steps:
step 1, stripping ends of a first optical fiber and a second optical fiber, wherein the stripped end of the first optical fiber is shorter than the stripped end of the second optical fiber;
step 2, placing the fiber core of the first optical fiber in the first connecting groove, enabling the outer cladding layer of the first optical fiber to abut against the outer side wall of the first connecting groove, and limiting the fiber core of the first optical fiber to move through the first support leg of the pressing block;
step 3, placing the fiber core of the second optical fiber in the second connecting groove, enabling the outer cladding layer of the second optical fiber to abut against the outer side wall of the second connecting groove, and limiting the fiber core of the second optical fiber to move through a second support leg of the pressing block;
and 4, setting and adjusting parameters of the welding machine to perform discharge welding.
7. The method of fusion splicing ribbons of different core diameters of claim 6 wherein said first fusion splice slot length is 30% of said second fusion splice slot length.
8. The method of fusion splicing ribbons of different core diameters as defined in claim 6 or 7, wherein the length of the first leg is less than or equal to the length of the first receiving groove, said first receiving groove being fixed to the base or the first receiving groove being integrally formed with the base.
9. The method of claim 6, wherein an auxiliary leg is provided outside the first leg, the height difference between the bottom of the auxiliary leg and the bottom of the first leg is equal to the thickness of the outer cladding of the first optical fiber, the auxiliary leg is fixedly connected to the first leg or is of an integral structure, and the height difference between the auxiliary leg and the first leg forms a step-shaped limit;
the first connecting groove is fixed on the base or the first connecting groove and the base are in an integrated structure,
between the step 2 and the step 4, the method further comprises a step 2a that after the fiber core of the first optical fiber is arranged in the first connecting groove, the auxiliary pin presses on the first optical fiber arranged on the base, and the movement of the first optical fiber without stripping the outer cladding layer is limited.
10. The method of fusion splicing ribbons of different core diameters of any of claims 6-9 wherein said parameters are set to: the discharge time is 25-35 s, the pre-discharge time is 0.1-0.4 s, the discharge interval is 15-25 um, the boost amount is 20-30 um, the discharge intensity is 46-54 step, and the discharge position is 280-290 doc.
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