CN214375410U - Branching device for multi-core optical fiber and optical fiber connector - Google Patents
Branching device for multi-core optical fiber and optical fiber connector Download PDFInfo
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- CN214375410U CN214375410U CN202120668220.7U CN202120668220U CN214375410U CN 214375410 U CN214375410 U CN 214375410U CN 202120668220 U CN202120668220 U CN 202120668220U CN 214375410 U CN214375410 U CN 214375410U
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Abstract
The utility model discloses a branch device for multi-core optical fiber and an optical fiber connector, wherein the branch device for multi-core optical fiber comprises a first inserting core, a second inserting core, a multi-core substrate and a tube shell; the first insertion core, the multi-core substrate and the second insertion core are sequentially connected, the multi-core substrate is fixed on one side of the second insertion core, and the first insertion core and the second insertion core are fixed in the tube shell; a first optical fiber hole is formed in the first inserting core, a second optical fiber hole is formed in the second inserting core, and a plurality of third optical fiber holes are formed in the multi-core substrate; the multi-core optical fiber penetrates through and is fixed in a first optical fiber hole of the first inserting core, the single-core optical fibers penetrate through and are fixed in a second optical fiber hole of the second inserting core, and one ends of the single-core optical fibers respectively extend out of a plurality of third optical fiber holes of the multi-core substrate. The structure can effectively realize the conversion from the multi-core fiber to the single-core fiber through the combination of the multi-core substrate and the inserting core, thereby achieving the purpose of connecting the multi-core fiber with the single-core fiber in a branch manner.
Description
Technical Field
The utility model belongs to the technical field of fiber communication, more specifically relates to a branch device and fiber connector for multicore optic fibre.
Background
Multi-Core Fiber (MCF) is a novel Fiber with multiple Fiber cores in a common cladding region, and has the characteristics of multiple physical channels, low inter-Fiber crosstalk index, good attenuation consistency of each Fiber Core, and the like due to the fact that the integrated density of a unit area of a transmission line can be improved, and is increasingly widely applied to space division multiplexing super-large-capacity Fiber communication systems, novel large-capacity Multi-service access networks, distributed Fiber sensing systems and medical equipment.
The single fiber core of the single-core optical fiber is positioned at the central position, and the plurality of fiber cores of the multi-core optical fiber surround the center of the multi-core optical fiber, so that the branch connection from the multi-core optical fiber to the single-core optical fiber is realized.
SUMMERY OF THE UTILITY MODEL
To the above defect or the improvement demand of prior art, the utility model provides a multicore is branch device and fiber connector for optic fibre, its aim at realize multicore optic fibre to the conversion of single core fiber connection, reach the purpose that the multicore optic fibre branch connects single core fiber.
To achieve the above object, according to one aspect of the present invention, there is provided a branching device for a multicore fiber, including a first ferrule 10, a second ferrule 20, a multicore substrate 40, and a case 60;
the first ferrule 10, the multi-core substrate 40 and the second ferrule 20 are sequentially connected, the multi-core substrate 40 is fixed on one side of the second ferrule 20, and the first ferrule 10 and the second ferrule 20 are fixed in the case 60;
a first optical fiber hole 11 is formed in the first ferrule 10, a second optical fiber hole 21 is formed in the second ferrule 20, and a plurality of third optical fiber holes 41 are formed in the multi-core substrate 40; the multi-core optical fiber 30 is fixed in the first optical fiber hole 11 of the first ferrule 10, the plurality of single-core optical fibers 50 are fixed in the second optical fiber hole 21 of the second ferrule 20, and one ends of the plurality of single-core optical fibers 50 respectively extend out of the plurality of third optical fiber holes 41 of the multi-core substrate 40.
Preferably, the number, distribution position and spacing of the third fiber holes 41 on the multi-core substrate 40 are respectively consistent with the number, distribution position and spacing of the light passing spots on the multi-core fiber 30.
Preferably, the inner diameter of the second optical fiber hole 21 is larger than the total outer diameter of the plurality of single core optical fibers 50 on the multi-core substrate 40.
Preferably, the optical power of the plurality of light passing spots in the multi-core optical fiber 30 is coupled to the plurality of single-core optical fibers 50, respectively.
Preferably, the material of the first ferrule 10 is glass, ceramic or metal.
Preferably, the material of the second ferrule 20 is glass, ceramic or metal.
Preferably, the material of the multi-core substrate 40 is glass, ceramic or metal.
Preferably, the surface of the multicore substrate 40 is polished and ground.
According to another aspect of the present invention, there is provided a multi-core optical fiber connector, comprising a multi-core optical fiber connector and a docking assembly, wherein the docking assembly and the multi-core optical fiber connector are coupled in a centering manner in an adapter;
the multi-core optical fiber connector comprises a second ferrule 20, a multi-core substrate 40 and a connector housing 70, wherein the multi-core substrate 40 is fixed on one side of the second ferrule 20, and the second ferrule 20 is fixed in the connector housing 70;
a second optical fiber hole 21 is formed in the second ferrule 20, and a plurality of third optical fiber holes 41 are formed in the multi-core substrate 40; wherein a plurality of single core optical fibers 50 are fixed in the second optical fiber holes 21 of the second ferrule 20, and one ends of the plurality of single core optical fibers 50 protrude from a plurality of third optical fiber holes 41 of the multi-core substrate 40, respectively.
Preferably, the number, distribution position and spacing of the third fiber holes 41 on the multi-core substrate 40 are respectively consistent with the number, distribution position and spacing of the light passing spots on the multi-core fiber 30 that needs to be switched.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect: the utility model provides an among the branch device for multicore optic fibre, set up first lock pin, second lock pin and multicore basement, multicore optic fibre runs through to be fixed in the optical fiber hole of first lock pin, and the multicore basement is fixed and is equipped with a plurality of optical fiber holes on one side of second lock pin and the multicore basement, can be used to pass a plurality of single core optic fibre, and these a plurality of single core optic fibre are whole through the optical fiber hole of second lock pin again. The structure can effectively realize the conversion from the multi-core fiber to the single-core fiber through the combination of the multi-core substrate and the inserting core, thereby achieving the purpose of connecting the multi-core fiber with the single-core fiber in a branch manner.
Drawings
Fig. 1 is a schematic structural diagram of a first ferrule provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second ferrule provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a multi-core optical fiber according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a multi-core substrate according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a single-core optical fiber according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a tube shell according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a branch device for a multi-core optical fiber according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a multi-core optical fiber connector according to an embodiment of the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
10-a first ferrule; 11-a first fiber hole; 20-a second ferrule; 21-a second fiber hole; 30-a multi-core fiber; 31-clear light spot; 40-a multicore substrate; 41-third fiber hole; 50-single core optical fiber; 60-a pipe shell; 61-a hollow body; 70-connector housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
In the following description, reference is made to the term "comprising" or any other variation thereof, which is 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. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections.
In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. The embodiment of the present invention relates to the description of the positional relationship between the "inside" and the "outside", and the external environment of the product or the component is referred to as "outside" and the other positions corresponding to the external environment are referred to as "inside" with the normal operating state as the reference.
Example 1
For the conversion that realizes multicore optic fibre to single core fiber connection, the embodiment of the utility model provides a branch device for multicore optic fibre, as shown in fig. 7, mainly include first lock pin 10, second lock pin 20, multicore basement 40 and tube 60, just first lock pin 10 multicore basement 40 with second lock pin 20 connects the setting in order. Wherein:
referring to fig. 1 and 7, the first ferrule 10 may be cylindrical, and a first optical fiber hole 11 is formed in the middle of the first ferrule, and the multi-core fiber 30 is fixed in the first optical fiber hole 11 of the first ferrule 10 in a penetrating manner, specifically, may be fixed by glue. As shown in fig. 3, the multi-core fiber 30 includes a plurality of light passing spots 31, and the number of cores corresponds to the number of cores in the multi-core fiber 30, and may be, for example, 2 cores, 3 cores, 4 cores, 5 cores, 6 cores, 7 cores, and the like, which is not limited herein.
Referring to fig. 2 and 7, the second ferrule 20 may be cylindrical, and a second optical fiber hole 21 is formed in the middle, and a plurality of single-core optical fibers 50 are fixed in the second optical fiber hole 21 of the second ferrule 20 in a penetrating manner, specifically, may be fixed by glue. The structure of each single-core optical fiber 50 is shown in fig. 5, and may be an etched optical fiber, a normal optical fiber, a special optical fiber, or an optical fiber of another type, which is not limited herein.
Referring to fig. 4 and 7, the multicore substrate 40 may have a cylindrical shape, and a surface thereof is provided with a plurality of third optical fiber holes 41, and the multicore substrate 40 may be fixed to one side (i.e., the left side in fig. 7) of the second ferrule 20 by glue, a mechanical structure, or the like. Wherein one ends of the plurality of single core optical fibers 50 protrude from the plurality of third optical fiber holes 41 of the multi-core substrate 40, respectively.
With reference to fig. 6 and fig. 7, a hollow body 61 is disposed in the package 60, and the first ferrule 10 and the second ferrule 20 can be fixed in the hollow body 61 in the package 60 by glue, so that the multi-core fiber 30 in the first ferrule 10 and the plurality of single-core fibers 50 in the second ferrule 20 perform fiber mode field coupling in the package 60, thereby implementing optical power transfer transmission. Specifically, before the glue is fixed, the optical power of the plurality of light passing spots 31 in the multi-core optical fiber 30 is coupled into the plurality of single-core optical fibers 50 by means of debugging.
Further, the number, distribution position and spacing of the third optical fiber holes 41 on the multi-core substrate 40 need to be respectively consistent with the number, distribution position and spacing of the light passing spots on the multi-core optical fiber 30, so as to realize accurate conversion of the optical power of the multi-core optical fiber 30 in the first ferrule 10 to the plurality of single-core optical fibers 50 in the second ferrule 20.
Further, as can be seen from the above, all of the plurality of single core fibers 50 on the multi-core substrate 40 pass through the second fiber holes 21 of the second ferrule 20, so the inner diameter of the second fiber holes 21 is larger than the total outer diameter of the plurality of single core fibers 50 on the multi-core substrate 40.
Further, in a preferred embodiment, after the multi-core fiber 30 is solidified in the first fiber hole 11 of the first ferrule 10, the surfaces of the multi-core fiber 30 and the first ferrule 10 may be processed by polishing and grinding, so that the multi-core fiber 30 is effectively coupled with the first ferrule 10 to achieve physical contact of the fibers.
Further, in a preferred embodiment, after the plurality of single core optical fibers 50 are cured in the plurality of third optical fiber holes 41 of the multi-core substrate 40, the surface of the multi-core substrate 40 may be processed by polishing and grinding so that the plurality of single core optical fibers 50 are effectively coupled with the multi-core substrate 40 to achieve optical fiber physical contact.
Further, the material of the first ferrule 10 may be glass, ceramic, or metal, and is not limited herein.
Further, the material of the second ferrule 20 may be glass, ceramic, or metal, and is not limited herein.
Further, the material of the multi-core substrate 40 may be glass, ceramic, or metal, and is not limited herein.
The embodiment of the utility model provides an among the above-mentioned branch device for multicore optic fibre, set up first lock pin, second lock pin and multicore basement, multicore optic fibre runs through to be fixed in the fiber hole of first lock pin, and the multicore basement is fixed and is equipped with a plurality of fiber holes on one side of second lock pin and the multicore basement, can be used to pass a plurality of single core optic fibre, and these a plurality of single core optic fibre are whole again through the fiber hole of second lock pin. The structure can effectively realize the conversion from the multi-core fiber to the single-core fiber through the combination of the multi-core substrate and the inserting core, thereby achieving the purpose of connecting the multi-core fiber with the single-core fiber in a branch manner.
Example 2
On the basis of above-mentioned embodiment 1, the embodiment of the utility model provides a still further provide a fiber connector for multicore fiber, mainly including multicore fiber connector and the butt joint subassembly that adopts the multicore basement, the butt joint subassembly with multicore fiber connector centering coupling in the adapter.
Referring to fig. 8, the multi-core optical fiber connector includes a second ferrule 20, a multi-core substrate 40, and a connector housing 70, wherein the multi-core substrate 40 is fixed on one side of the second ferrule 20, and the second ferrule 20 is fixed in the connector housing 70. Wherein:
referring to fig. 2, the second ferrule 20 is cylindrical and has a second optical fiber hole 21 formed therein for fixing a plurality of single core optical fibers 50. The structure of each single-core optical fiber 50 is shown in fig. 5, and may be an etched optical fiber, a normal optical fiber, a special optical fiber, or an optical fiber of another type, which is not limited herein.
Referring to fig. 4, the multi-core substrate 40 is cylindrical, and has a plurality of third optical fiber holes 41 formed on a surface thereof, for passing through the plurality of single-core optical fibers 50; the multi-core substrate 40 can be fixed on one side (i.e., the left side in fig. 8) of the second ferrule 20 by glue, mechanical structure, or the like.
The plurality of single-core optical fibers 50 are fixedly penetrated and fixed in the second optical fiber holes 21 of the second ferrule 20 through glue, and one ends of the plurality of single-core optical fibers 50 respectively extend out of the plurality of third optical fiber holes 41 of the multi-core substrate 40.
Further, the number, distribution position and spacing of the third fiber holes 41 on the multi-core substrate 40 need to be respectively consistent with the number, distribution position and spacing of the light passing spots on the corresponding multi-core fiber 30 to be switched, so as to realize butt joint with the first ferrule 10 including the multi-core fiber 30 in the high-precision sleeve, that is, complete the switching movable connection of the multi-core fiber 30 to the plurality of single-core fibers 50.
Further, in a preferred embodiment, after the plurality of single core optical fibers 50 are cured in the plurality of third optical fiber holes 41 of the multi-core substrate 40, the surface of the multi-core substrate 40 may be processed by polishing and grinding so that the plurality of single core optical fibers 50 are effectively coupled with the multi-core substrate 40 to achieve optical fiber physical contact.
Further, the material of the second ferrule 20 may be glass, ceramic, or metal, and is not limited herein.
Further, the material of the multi-core substrate 40 may be glass, ceramic, or metal, and is not limited herein.
The embodiment of the utility model provides an above-mentioned fiber connector possesses the characteristic of high density multicore number, can directly expand the application on fiber connector basis such as traditional FC SC LC.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A branching device for a multi-core optical fiber is characterized by comprising a first ferrule (10), a second ferrule (20), a multi-core substrate (40) and a tube shell (60);
the first ferrule (10), the multi-core substrate (40) and the second ferrule (20) are sequentially connected, the multi-core substrate (40) is fixed on one side of the second ferrule (20), and the first ferrule (10) and the second ferrule (20) are fixed in the tube shell (60);
a first optical fiber hole (11) is formed in the first ferrule (10), a second optical fiber hole (21) is formed in the second ferrule (20), and a plurality of third optical fiber holes (41) are formed in the multi-core substrate (40); the multi-core optical fiber (30) penetrates through and is fixed in a first optical fiber hole (11) of the first ferrule (10), a plurality of single-core optical fibers (50) penetrate and are fixed in a second optical fiber hole (21) of the second ferrule (20), and one ends of the plurality of single-core optical fibers (50) respectively extend out of a plurality of third optical fiber holes (41) of the multi-core substrate (40).
2. The branching device for a multicore fiber according to claim 1, wherein the number, distribution position, and pitch of the third fiber holes (41) on the multicore substrate (40) are respectively identical to the number, distribution position, and pitch of the light passing spots on the multicore fiber (30).
3. The branching device for multicore fibers according to claim 1, wherein the inner diameter of the second fiber hole (21) is larger than the total outer diameter of the plurality of single core fibers (50) on the multicore substrate (40).
4. The branching device for a multicore fiber according to claim 1, wherein optical powers of a plurality of light passing spots in the multicore fiber (30) are coupled into the plurality of single-core fibers (50), respectively.
5. The branching device for multicore fibers according to any one of claims 1 to 4, wherein the first ferrule (10) is made of glass, ceramic or metal.
6. The branching device for multicore fibers according to any one of claims 1 to 4, wherein the second ferrule (20) is made of glass, ceramic or metal.
7. The branching device for a multicore fiber according to any one of claims 1 to 4, wherein the multicore substrate (40) is made of glass, ceramic, or metal.
8. The branching device for a multicore optical fiber according to any one of claims 1 to 4, wherein the surface of the multicore substrate (40) is subjected to polishing and grinding treatment.
9. An optical fiber connector for a multi-core optical fiber is characterized by comprising a multi-core optical fiber connector and a butt joint component, wherein the butt joint component and the multi-core optical fiber connector are coupled in a centering way in an adapter;
the multi-core optical fiber connector comprises a second ferrule (20), a multi-core substrate (40) and a connector shell (70), wherein the multi-core substrate (40) is fixed on one side of the second ferrule (20), and the second ferrule (20) is fixed in the connector shell (70);
a second optical fiber hole (21) is formed in the second ferrule (20), and a plurality of third optical fiber holes (41) are formed in the multi-core substrate (40); wherein a plurality of single core optical fibers (50) are fixed in the second optical fiber holes (21) of the second ferrule (20), and one ends of the plurality of single core optical fibers (50) respectively protrude from a plurality of third optical fiber holes (41) of the multi-core substrate (40).
10. The optical fiber connector for multicore fibers according to claim 9, wherein the number, distribution position, and pitch of the third fiber holes (41) on the multicore substrate (40) are respectively consistent with the number, distribution position, and pitch of the light passing spots on the multicore fiber (30) to be spliced.
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| CN202120668220.7U CN214375410U (en) | 2021-04-01 | 2021-04-01 | Branching device for multi-core optical fiber and optical fiber connector |
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| CN202120668220.7U CN214375410U (en) | 2021-04-01 | 2021-04-01 | Branching device for multi-core optical fiber and optical fiber connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460694A (en) * | 2021-12-09 | 2022-05-10 | 华为技术有限公司 | Optical module, lock pin and optical fiber connector |
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2021
- 2021-04-01 CN CN202120668220.7U patent/CN214375410U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460694A (en) * | 2021-12-09 | 2022-05-10 | 华为技术有限公司 | Optical module, lock pin and optical fiber connector |
| CN114460694B (en) * | 2021-12-09 | 2023-10-20 | 华为技术有限公司 | Optical module, ferrule and optical fiber connector |
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