CN210742553U - Optical fiber core residual laser processing structure - Google Patents
Optical fiber core residual laser processing structure Download PDFInfo
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- CN210742553U CN210742553U CN201922085577.8U CN201922085577U CN210742553U CN 210742553 U CN210742553 U CN 210742553U CN 201922085577 U CN201922085577 U CN 201922085577U CN 210742553 U CN210742553 U CN 210742553U
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Abstract
The utility model discloses a structure is handled to remaining laser of optic fibre core, work as when optic fibre is single mode fiber, the structure is handled to remaining laser of optic fibre core includes the second multimode fiber section with the single mode fiber butt fusion, second multimode fiber section includes second multimode fiber fibre core and the second multimode fiber cladding of coaxial setting, the other end butt fusion of second multimode fiber section has second single mode fiber section, second single mode fiber section includes coaxial second single mode fiber core and second single mode fiber cladding, second single mode fiber cladding surface coating second high folded glue layer, the other end and the third multimode fiber section butt fusion of second single mode fiber section, third multimode fiber section includes coaxial third multimode fiber fibre core and third multimode fiber cladding. The fiber core laser in the single-mode fiber is transmitted to the cladding of the single-mode fiber through the mode disturbance of the multimode fiber, and the laser is led out by using the high-refractive-index glue.
Description
Technical Field
The utility model relates to a remaining laser processing structure of optic fibre core.
Background
As shown in fig. 1, when the single-mode fiber is normally light-transmitted, light is transmitted inside the core 1 of the single-mode fiber, and cannot be guided out from the cladding 2 of the single-mode fiber by using the high-folding glue, as shown in fig. 2, when the multimode fiber is normally light-transmitted, light is transmitted inside the core 3 of the multimode fiber, and because the cladding 4 of the multimode fiber contains a fluorine layer, the refractive index is low, and light cannot be guided out by using the high-folding glue.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a structure is handled to remaining laser of optic fibre core passes through multimode fiber mode disturbing, and the cladding that single mode fiber was transmitted to the laser of the fibre core originally utilizes high refracting index glue to derive laser.
The noun explains:
high folding glue: the refractive index is greater than 1.7, for example, the refractive index is greater than 1.7 resin glue, organic silica gel glue, polyimide glue, etc.
For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
the utility model provides a structure is handled to remaining laser of optic fibre core, works as when optic fibre is multimode fiber, the structure is handled to the remaining laser of optic fibre core includes the first single mode fiber section with multimode fiber fusion, first single mode fiber section includes coaxial first single mode fiber fibre core and first single mode fiber cladding, first single mode fiber cladding surface coating first high folded glue water layer, the other end and the first multimode fiber section fusion of first single mode fiber section, first multimode fiber section includes coaxial first multimode fiber fibre core and first multimode fiber cladding.
Preferably, the multimode optical fiber comprises a coaxial multimode optical fiber core and a multimode optical fiber cladding.
Preferably, the multimode optical fiber cladding is provided with a fluorine layer.
Preferably, the diameter of the first single mode fiber section differs from that of the multimode fiber by ± 50 μm, and the diameter of the first single mode fiber section differs from that of the first multimode fiber section by ± 50 μm.
The utility model provides a structure is handled to remaining laser of optic fibre core, works as when optic fibre is single mode fiber, the structure is handled to the remaining laser of optic fibre core includes the second multimode fiber section with the single mode fiber butt fusion, second multimode fiber section includes coaxial second multimode fiber fibre core and the second multimode fiber cladding that sets up, the other end butt fusion of second multimode fiber section has second single mode fiber section, second single mode fiber section includes coaxial second single mode fiber core and second single mode fiber cladding, second single mode fiber cladding surface coating second high folded glue water layer, the other end and the third multimode fiber section butt fusion of second single mode fiber section, third multimode fiber section includes coaxial third multimode fiber core and third multimode fiber cladding.
Preferably, the single-mode optical fiber comprises a coaxial single-mode optical fiber core and a single-mode optical fiber cladding.
Preferably, the single-mode optical fiber cladding is made of quartz.
Preferably, the diameter difference between the second multimode fiber section and the single mode fiber is ± 50 μm, the diameter difference between the second single mode fiber section and the second multimode fiber section is ± 50 μm, and the diameter difference between the second single mode fiber section and the third multimode fiber section is ± 50 μm.
The utility model has the advantages that:
firstly, when the optical fiber is a multimode optical fiber, laser is conducted in the multimode optical fiber, a single mode optical fiber and the multimode optical fiber respectively, the welding structure can convert the laser of the original multimode optical fiber into a cladding of the single mode optical fiber, the original total reflection structure is damaged by high-refractive-index glue, 90% of the laser is removed, and finally, a section of multimode optical fiber is used for outputting, so that the power density of the end face of the optical fiber is reduced, and the reverse transmission of the light is avoided.
Secondly, when the optical fiber is a single mode optical fiber, laser is conducted on the single mode optical fiber, the multimode optical fiber, the single mode optical fiber and the multimode optical fiber respectively, the welding structure can convert the fiber core laser of the original single mode optical fiber into the cladding of the single mode optical fiber by utilizing a section of large mode field multimode optical fiber, the original total reflection structure is damaged by utilizing high-refractive-index glue, 90% of laser is removed, and finally, a section of multimode optical fiber is used for outputting, so that the power density of the end face of the optical fiber is reduced, and the reverse transmission of light is.
Drawings
FIG. 1 is a schematic illustration of normal optical transmission of a single mode optical fiber;
FIG. 2 is a schematic illustration of normal optical transmission of a multimode optical fiber;
fig. 3 is a schematic structural diagram of the multimode fiber core residual laser processing structure of the present invention;
fig. 4 is a schematic structural diagram of the single-mode fiber core residual laser processing structure of the present invention;
the reference numerals of the drawings have the following meanings:
1: a single mode fiber core; 2: a single mode fiber cladding; 3: a multimode optical fiber core; 4: a multimode fiber cladding; 5: leading out laser; 6: a first single mode fiber core; 7: a first high-folding glue layer; 8: a first single mode fiber cladding; 9: a first multimode optical fiber core; 10: a first multimode fiber cladding; 11: a second multimode fiber cladding; 12: a second multimode optical fiber core; 13: a second single mode fiber cladding; 14: a second high-folding glue layer; 15: a second single mode fiber core; 16: a third multimode fiber cladding; 17: a third multimode optical fiber core.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not limited to the present invention.
When the optical fiber is a multimode fiber, as shown in fig. 3, the optical fiber core residual laser processing structure comprises a first single-mode fiber section welded with the multimode fiber, wherein the first single-mode fiber section comprises a first coaxial single-mode fiber core 6 and a first single-mode fiber cladding 8, and generally, the optical fiber cladding is wrapped on the periphery of the optical fiber core. The first single mode fiber cladding layer 8 surface coating first high book glue layer 7, high book glue is the glue that the refracting index is greater than 1.7, for example, the refracting index is greater than 1.7 resin glue, organic silica gel glue, polyimide glue etc. and form high book glue layer through coating high book glue. The other end of the first single-mode fiber section is welded with a first multimode fiber section, and the first multimode fiber section comprises a first multimode fiber core 9 and a first multimode fiber cladding 10 which are coaxial.
By adopting the welding mode, after different optical fibers (single mode and multimode) are welded, the laser of the fiber core can be transferred to the cladding due to the difference of the refractive indexes of the fiber core and the cladding, and the laser of the cladding is led out by using high-folding glue. In fig. 3, the optical fiber is divided into 3 parts, and the functions from left to right are respectively:
A. multimode fiber: normal transmission state of the laser.
B. Single-mode optical fiber, surface coating high folding glue: most energy of input laser with large mode field diameter is converted into cladding of single mode fiber, the cladding of the single mode fiber is coated with high-refractive-index glue to destroy the original total reflection structure, and 90% of laser is removed.
C. Multimode fiber: the power density of the end face of the optical fiber is reduced, and reverse transmission of light is avoided.
The laser is respectively conducted on the multimode fiber, the single-mode fiber and the multimode fiber, the welding structure can convert the laser of the original multimode fiber into the cladding of the single-mode fiber, the original total reflection structure is damaged by using high-refractive-index glue, 90% of the laser is removed, and finally, a section of multimode fiber is used for output, so that the power density of the end face of the fiber is reduced, and the reverse transmission of the light is avoided.
Preferably, the multimode fiber comprises a coaxial multimode fiber core 3 and a multimode fiber cladding 4, wherein the multimode fiber cladding 4 is provided with a fluorine layer, the refractive index is low, and the laser is not easily led out by using high-refractive-index glue.
Preferably, the diameter difference between the first single-mode fiber section and the multimode fiber is ± 50 μm, the diameter difference between the first single-mode fiber section and the first multimode fiber section is ± 50 μm, and the diameters of the fibers at two ends of the fusion-spliced part are close to each other.
The utility model provides a structure is handled to remaining laser of optic fibre core, as shown in fig. 4, when optic fibre is single mode fiber, structure is handled to remaining laser of optic fibre core includes the second multimode fiber section with the single mode fiber butt fusion, second multimode fiber section includes second multimode fiber core 12 and the second multimode fiber cladding 11 of coaxial setting, the other end butt fusion of second multimode fiber section has second single mode fiber section, second single mode fiber section includes coaxial second single mode fiber core 15 and second single mode fiber cladding 13, second single mode fiber cladding 13 surface coating second high folded glue water layer 14, the other end and the third multimode fiber section butt fusion of second single mode fiber section, third multimode fiber section includes coaxial third multimode fiber core 17 and third multimode fiber cladding 16.
When the optical fiber is a single-mode optical fiber, laser is conducted on the single-mode optical fiber, the multimode optical fiber, the single-mode optical fiber and the multimode optical fiber respectively, the welding structure can convert the fiber core laser of the original single-mode optical fiber into the cladding of the single-mode optical fiber by utilizing a section of large-mode-field multimode optical fiber, the original total reflection structure is damaged by utilizing high-refractive-index glue, 90% of laser is removed, and finally, a section of multimode optical fiber is used for outputting, so that the power density of the end face of the optical fiber is reduced.
In fig. 4, the optical fiber is divided into 4 parts, and the functions from left to right are respectively:
A. single-mode fiber: normal transmission state of the laser.
B. Multimode fiber: the mode field diameter of the laser is enlarged.
C. Single-mode optical fiber, surface coating high folding glue: most energy of input laser with large mode field diameter is converted into cladding of single mode fiber, the cladding of the single mode fiber is coated with high-refractive-index glue to destroy the original total reflection structure, and 90% of laser is removed.
D. Multimode fiber: the power density of the end face of the optical fiber is reduced, and reverse transmission of light is avoided.
Preferably, the single mode fiber comprises a coaxial single mode fiber core 1 and a single mode fiber cladding 2, wherein the single mode fiber cladding 2 is made of quartz and is easily led out by high-refractive-index glue.
Preferably, the diameter difference between the second multimode fiber section and the single mode fiber is ± 50 μm, the diameter difference between the second single mode fiber section and the second multimode fiber section is ± 50 μm, and the diameter difference between the second single mode fiber section and the third multimode fiber section is ± 50 μm.
When the optical fiber to be processed is a single-mode optical fiber, the multimode optical fiber with the diameter close to the diameter of the outer cladding of the optical fiber to be processed (+ -50 microns) is used for mode disturbing, the melting point is processed by high-refractive-index glue, the coiling radius of the multimode optical fiber is controlled within 10mm for effective mode disturbing, the single-mode optical fiber with the diameter close to the diameter of the outer cladding of the multimode optical fiber (+ -50 microns) is connected into the outer cladding, the melting point is processed by the high-refractive-index glue, the laser 5 is led out by the high-refractive-index glue, the single-mode optical fiber is welded with the multimode optical fiber, the coating layer of the single-mode optical fiber at the melting point. The structure can process 20W core residual laser, and the temperature of the whole system melting point is not higher than 30 ℃.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings are utilized, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a structure is handled to remaining laser of optic fibre core, its characterized in that, when optic fibre is multimode fiber, the structure is handled to the remaining laser of optic fibre core includes the first single mode fiber section with multimode fiber fusion, first single mode fiber section includes coaxial first single mode fiber core (6) and first single mode fiber cladding (8), first single mode fiber cladding (8) surface coating first high viscose water layer (7), the other end and the first multimode fiber section fusion of first single mode fiber section, first multimode fiber section includes coaxial first multimode fiber core (9) and first multimode fiber cladding (10).
2. An optical fibre core residual laser processing structure as claimed in claim 1, characterized in that said multimode optical fibre comprises a coaxial multimode optical fibre core (3) and a multimode optical fibre cladding (4).
3. An optical fibre core residual laser processing structure as claimed in claim 2, characterized in that said multimode fibre cladding (4) is provided with a fluorine layer.
4. An optical fiber core residual laser processing structure according to claim 1, wherein the diameter of said first segment of single mode fiber differs from that of the multimode fiber by ± 50 μm, and the diameter of said first segment of single mode fiber differs from that of the first multimode fiber by ± 50 μm.
5. A residual laser processing structure of a fiber core of an optical fiber is characterized in that when the optical fiber is a single-mode optical fiber, the fiber core residual laser processing structure comprises a second multimode fiber section welded with the single-mode fiber, the second multimode optical fiber section comprises a second multimode optical fiber core (12) and a second multimode optical fiber cladding (11) which are coaxially arranged, the other end of the second multimode fiber section is welded with a second single-mode fiber section, the second single-mode fiber section comprises a second single-mode fiber core (15) and a second single-mode fiber cladding (13) which are coaxial, the surface of the second single-mode fiber cladding (13) is coated with a second high refractive index glue layer (14), the other end of the second single-mode optical fiber section is welded with a third multimode optical fiber section, and the third multimode optical fiber section comprises a third multimode optical fiber core (17) and a third multimode optical fiber cladding (16) which are coaxial.
6. An optical fibre core residual laser processing structure according to claim 5, characterized in that said single mode optical fibre comprises a coaxial single mode optical fibre core (1) and a single mode optical fibre cladding (2).
7. An optical fibre core residual laser processing structure as claimed in claim 6, characterized in that said single mode optical fibre cladding (2) is of quartz.
8. An optical fiber core residual laser processing structure according to claim 5, wherein the diameter of said second multimode fiber section differs from that of a single mode fiber by ± 50 μm, the diameter of said second single mode fiber section differs from that of said second multimode fiber section by ± 50 μm, and the diameter of said second single mode fiber section differs from that of said third multimode fiber section by ± 50 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922085577.8U CN210742553U (en) | 2019-11-28 | 2019-11-28 | Optical fiber core residual laser processing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922085577.8U CN210742553U (en) | 2019-11-28 | 2019-11-28 | Optical fiber core residual laser processing structure |
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| CN210742553U true CN210742553U (en) | 2020-06-12 |
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| CN201922085577.8U Active CN210742553U (en) | 2019-11-28 | 2019-11-28 | Optical fiber core residual laser processing structure |
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