CN219978561U - Multi-core optical fiber array beam expansion contact piece and optical fiber connector - Google Patents
Multi-core optical fiber array beam expansion contact piece and optical fiber connector Download PDFInfo
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- CN219978561U CN219978561U CN202320550647.6U CN202320550647U CN219978561U CN 219978561 U CN219978561 U CN 219978561U CN 202320550647 U CN202320550647 U CN 202320550647U CN 219978561 U CN219978561 U CN 219978561U
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- optical fiber
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- sleeve
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 154
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 4
- 238000003491 array Methods 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The utility model relates to a multi-core optical fiber array beam expanding contact and an optical fiber connector, wherein the multi-core optical fiber array beam expanding contact comprises an outer sleeve, a lens and an inner sleeve are arranged in the outer sleeve at intervals along the axial direction, an optical fiber array is fixedly assembled in the inner sleeve, the optical fiber array is formed by bonding at least two optical fibers, and the peripheral surfaces of adjacent optical fibers are tangent; the optical fibers at the outer edge of the optical fiber array are tangent to the inner circumferential surface of the inner sleeve. The utility model can ensure the unique optical fiber position fixing in the contact element through the arrangement of the optical fiber array in the inner sleeve, and has good high temperature resistance and vibration resistance.
Description
Technical Field
The utility model belongs to the technical field of contacts, and particularly relates to a multi-core optical fiber array beam expanding contact.
Background
The existing array beam expansion contact piece is generally in the form of an array micro lens, a product is generally made of plastic materials, anti-reflection glue exists between an optical fiber and the lens, the anti-reflection glue can change in a high-temperature and high-vibration environment to influence the transmission of optical signals, namely, the existing array beam expansion contact piece is weak in temperature resistance and vibration-containing impact performance, and is not suitable for being used in wide-temperature and severe vibration environments such as military use.
Disclosure of Invention
In order to solve the problems, the utility model provides a multi-core array beam expanding contact piece with a novel structure, which is made of ceramic materials, and is used for expanding beams of a plurality of light spots fixed in an inner sleeve through a lens fixed in the outer sleeve, substances such as anti-reflection glue are not arranged between optical fibers and the lens, and the relative positions of all the optical fibers in the optical fiber array are naturally kept unchanged.
The aim and the technical problems of the utility model are realized by adopting the following technical proposal. The utility model provides a multi-core optical fiber array beam expanding contact piece, which comprises an outer sleeve, wherein a lens and an inner sleeve are axially arranged in the outer sleeve at intervals, an optical fiber array is fixedly assembled in the inner sleeve, the optical fiber array is formed by bonding at least two optical fibers, and the peripheral surfaces of adjacent optical fibers are tangent; the optical fibers at the outer edge of the optical fiber array are tangent to the inner circumferential surface of the inner sleeve.
The aim and the technical problems of the utility model can be further realized by adopting the following technical measures.
In the multi-core optical fiber array beam expanding contact piece, the outer sleeve is further provided with a positioning structure for positioning each optical fiber position in the optical fiber array.
The multi-core optical fiber array beam expanding contact piece is characterized in that the positioning structure is a positioning key.
The multi-core optical fiber array beam expanding contact piece is characterized in that the positioning key and the outer sleeve are integrally formed.
In the multi-core optical fiber array beam expanding contact piece, the positioning key is formed by extending forward the front end of the annular sleeve fixed on the periphery of the outer sleeve.
In the multi-core optical fiber array beam expanding contact piece, optical fibers forming the optical fiber array are arranged in a layered mode from inside to outside, the adjacent optical fibers on the same layer and the adjacent optical fibers on different layers are tangent to the outer periphery of the optical fibers, and the outer Zhou Jun of the optical fibers positioned on the outermost layer is tangent to the inner peripheral surface of the inner sleeve.
The aim and the technical problems of the utility model are also realized by adopting the following technical proposal. The optical fiber connector comprises the multi-core optical fiber array beam expansion contact piece, a first positioning end and a second positioning end, wherein the first positioning end is matched and positioned with a positioning structure of the multi-core optical fiber array beam expansion contact piece assembled in the connector, the second positioning end is matched and positioned with a positioning structure of the opposite-plug multi-core optical fiber array beam expansion contact piece, and the first positioning end and the second positioning end are coaxially distributed.
The aim and the technical problems of the utility model can be further realized by adopting the following technical measures.
In the optical fiber connector, the positioning structure is a positioning key, and the first positioning end and the second positioning end are positioning grooves at two ends of the positioning sleeve.
In the optical fiber connector, the ceramic sleeve is also positioned and assembled in the positioning sleeve, and the outer sleeves of the two multi-core optical fiber array beam expansion contact pieces which are matched and butted are butted at the inner end face of the ceramic sleeve.
Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the technical scheme, the utility model can achieve quite technical progress and practicability, has wide industrial application value, and has at least the following advantages:
according to the utility model, the ceramic material commonly used for the optical fiber connector is used as the contact piece material, the inner sleeve of the contact piece is used for fixing the optical fiber arrays, the optical fiber arrays can be arranged to ensure that the position of the internal optical fiber is fixed only, but the optical fiber arrays can integrally rotate along the circle center, the reliable positioning of the internal optical fiber can be realized only through the adhesive, and the high-temperature resistance and the vibration resistance are good.
The outer circle of the inner sleeve is coaxial with the inner hole with high precision, the diameter of the circumscribed circle formed by the optical fiber array is matched with the inner hole of the inner sleeve with high precision, and finally, the high-precision positioning of the optical fibers relative to the outer circle of the inner sleeve is ensured; the contact member outer sleeve is internally fixed with 1 lens to realize the beam expansion of a plurality of optical fiber light spots, the outer circumference of the outer sleeve is an optical positioning surface of the contact member, and the positioning structure (keys and grooves or other positioning forms) is used for aligning the relative positions of optical fibers in the contact member to perform circumferential positioning, so that the accurate butt joint of a pair of optical fiber contact member multipath optical signals is finally realized.
Drawings
FIG. 1 is a cross-sectional view of a multicore fiber array expanding contact of the present utility model;
FIG. 2 is a schematic diagram of the distribution of an optical fiber in an inner sleeve of a contact according to example 1 of the present utility model;
FIG. 3 is a schematic diagram of the distribution of an optical fiber within an inner sleeve of a contact according to embodiment 2 of the present utility model;
FIG. 4 is a schematic diagram of the distribution of an optical fiber within an inner sleeve of a contact according to embodiment 3 of the present utility model;
FIG. 5 is a schematic diagram of the butt joint of the beam expanding contacts of the multi-core fiber array of the present utility model;
fig. 6 is a cross-sectional view of the multi-core fiber array expansion contact of the present utility model in butt-joint.
[ Main element symbols description ]
1: outer sleeve
2: inner sleeve
21: an inner peripheral surface
22: an outer peripheral surface
3: lens
4: optical fiber
5: positioning key
6: ring cover
7: positioning sleeve
8: ceramic sleeve
9: positioning groove
Detailed Description
In order to further describe the technical means and effects adopted for achieving the preset aim of the present utility model, the following detailed description refers to the specific implementation, structure, characteristics and effects of the multi-core optical fiber array beam expanding contact according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-6, which are schematic structural views of parts of a beam expanding contact for a multi-core optical fiber array according to the present utility model, the contact includes an outer sleeve 1, an inner sleeve 2 is fixedly mounted in the outer sleeve 1, an optical fiber array 10 composed of at least two optical fibers is mounted in the inner sleeve 2, and in the optical fiber array 10, the outer circumferential surfaces of adjacent optical fibers 4 are tangent, so that the relative positions of the optical fibers 4 constituting the optical fiber array 10 are not changed, and reliable positioning of the optical fibers 4 in the optical fiber array 10 is ensured. And adjacent optical fibers 4 constituting the optical fiber array 10 are bonded together.
The optical fibers 4 at the outer edge of the optical fiber array 10 are tangent to the inner circumferential surface 21 of the inner sleeve 2, and the inner circumferential surface 21 and the outer circumferential surface 22 of the inner sleeve 2 are coaxial throughout the extension length of the inner sleeve 2, so that the optical fiber array 10 can only rotate in the inner sleeve 2, the relative positions of the optical fibers 4 can still be kept unchanged, and the optical fiber array 10 can be reliably positioned in the inner sleeve 2 only through viscose.
The relative positions among the optical fibers 4 forming the optical fiber array 10 are kept unchanged through the distribution mode, the outer peripheral surface of the optical fiber array 10 is tangent to the inner periphery of the inner sleeve 2, namely, the outer peripheral surfaces of all the optical fibers positioned at the outermost layer of the optical fiber array 10 are tangent to the inner periphery of the inner sleeve 2, so that the relative positions of the optical fibers 4 in the inner sleeve 2 cannot be changed, the fixing of the relative positions is realized through the arrangement and distribution among the optical fibers and between the optical fibers and the inner sleeve, and the use reliability in a high-temperature and high-vibration environment is ensured without depending on other fixing devices and fixing substances.
The front end of the outer sleeve 1 is also fixed with a lens 3, and the lens 3 is used for expanding the light spots emitted by the optical fibers of the optical fiber array 10 in the inner sleeve 2. In this embodiment, the lens 3 is adhesively fixed at the front end of the outer sleeve 1, the inner sleeve 2 is adhesively fixed at the rear end of the outer sleeve 1, and the lens 3 and the inner sleeve 2 are axially spaced apart in the sleeve 1.
In this embodiment, the lens 3 is installed by the front end of the outer sleeve 1, the front end of the inner sleeve 2 is installed by the rear end of the outer sleeve 1, and in order to realize the guiding when the lens 3 and the inner sleeve 2 are installed, the front end and the rear end of the outer sleeve 1 are provided with outward expanding guiding ports.
In order to realize the resolution of the positions of the optical fibers 4 in the contact and the reliable positioning during the butting, each optical fiber 4 forming the optical fiber array 10 can realize the accurate adapting butting when the matched contact is in butting, the outer side of the outer sleeve 1 is also provided with a positioning structure which can be matched with the corresponding structure in the connector to realize the positioning, so that the optical fibers in the two adapting contacts can be accurately butted when the connector is in butting.
In this embodiment, the positioning structure is a positioning key 5, and the positioning key 5 is formed by extending forward from one side of a ring sleeve 6 fixed on the outer periphery of the outer sleeve 1, and in other embodiments, the positioning structure may be a groove or other structure capable of performing a positioning function. The location of the positioning key 5 corresponds to a specific optical fiber 4 in the optical fiber array 10 to achieve reliable positioning of the respective optical fibers. In this embodiment, during assembly, the optical fibers are bonded and fixed in a specific order to form the optical fiber array 10, then the optical fiber array 10 is installed in the inner sleeve 2, the inner sleeve 2 is fixed in the outer sleeve 1, finally the ring sleeve 6 is rotated to enable the positioning key 5 to rotate to the specific optical fiber 4, and the ring sleeve 6 is fixed on the outer sleeve 1, so that the fixing of the positioning key 5 is realized.
In other embodiments of the present utility model, the positioning key 5 is integrally formed on the outer sleeve 1, and at this time, the position of the positioning key 5 is adjusted by rotating the outer sleeve 1.
In this embodiment, the accurate butt joint of the two adapted contacts is realized by the positioning sleeve 7, positioning grooves 9 adapted to the positioning keys 5 are respectively arranged at two ends of the positioning sleeve 7, the positioning grooves 9 at two ends of the positioning sleeve 7 are axially distributed at intervals along the positioning sleeve 7, and the positioning keys 5 thereon always keep corresponding guiding cooperation with the positioning grooves 9 in the butt joint process of the two contacts.
In this embodiment, a ceramic sleeve 8 is further disposed in the positioning sleeve 7, two ends of the ceramic sleeve 8 are provided for the front ends of the outer sleeves 1 of the two contact members to enter, and when the front end faces of the outer sleeves 1 of the two contact members are abutted, the lenses in the two contact members are also abutted in an axial non-contact manner, so that optical signal transmission is realized.
And the distribution mode of the array optical fibers in the inner sleeve according to the utility model is described with reference to the specific drawings.
Referring to fig. 2, a 7-core optical fiber array beam expanding contact is disclosed, in this embodiment, the optical fiber array 10 is composed of 7 optical fibers 4, the 7 optical fibers 4 are divided into an inner layer and an outer layer, the inner layer is 6 uniformly distributed around the inner layer, the periphery of one optical fiber of the inner layer is tangent to six peripheries of the outer layer, among six outer layer optical fibers, the adjacent optical fibers are tangent to the outer Zhou Junxiang, and the peripheries of the 6 outer optical fibers are tangent to the inner peripheral surface 21 of the inner sleeve 2. In this embodiment, the optical fibers of the inner layer and the optical fibers of the outer layer are bonded and fixed, and the optical fibers of the outer layer are also bonded and fixed, so that the optical fiber array 10 is formed, and the optical fiber array 10 is integrally installed in the inner sleeve 2 and then bonded and fixed with the inner sleeve 2 through the adhesive.
Referring to fig. 3, a 4-core optical fiber array beam expanding contact is disclosed, in this embodiment, the optical fiber array 10 is composed of 4 optical fibers 4, the 4 optical fibers 4 form a circumference, the outer circumferences of adjacent optical fibers 4 are tangent, and the outer circumferences of the 4 optical fibers 4 are simultaneously tangent to the inner circumference 21 of the inner sleeve 2.
Referring to fig. 4, a 2-core optical fiber array beam expanding contact is disclosed, in which the optical fiber array 10 is composed of two optical fibers 4 with tangential outer circumferences, and the outer circumferences of the two optical fibers 4 are also tangential to the inner circumferential surface 21 of the inner sleeve 2.
In other embodiments of the present utility model, the number of optical fibers that form the optical fiber array 10 may be other, and only the tangents of the outer circumferential surfaces of adjacent optical fibers need to be satisfied. When the number of optical fibers constituting the optical fiber array 10 is large, the optical fibers are distributed from inside to outside in a layered manner, the outer circumferences of the adjacent optical fibers 4 in the same layer are tangential, the adjacent optical fibers 4 in the adjacent layer are tangential, and the outer circumferences of the respective optical fibers 4 in the outermost layer are simultaneously tangential to the inner circumferential surface 21 of the inner sleeve 2, thereby realizing the unique fixation of the positions of the respective optical fibers constituting the array optical fiber 10 in the inner sleeve 2.
The inner sleeve 1, the outer sleeve 2 and the positioning key 5 are made of ceramic materials commonly used for optical fiber connectors, 1 lens is fixed in the outer sleeve to realize the beam expansion of a plurality of optical fiber spots, and the positioning structure (key and groove or other positioning forms) is aligned with the relative positions of optical fibers in the contact piece to realize the transmission of optical signals.
The present utility model is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present utility model can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (9)
1. The utility model provides a multicore optic fibre array expands beam contact spare which characterized in that: the optical fiber array is formed by bonding at least two optical fibers, and the peripheral surfaces of adjacent optical fibers are tangent; the optical fibers at the outer edge of the optical fiber array are tangent to the inner circumferential surface of the inner sleeve.
2. The multi-core fiber array beam expanding contact of claim 1, wherein: and the outer sleeve is also provided with a positioning structure for positioning the position of each optical fiber in the optical fiber array.
3. The multi-core fiber array beam expanding contact of claim 2, wherein: the positioning structure is a positioning key.
4. The multi-core fiber array beam expanding contact of claim 3, wherein: the positioning key and the outer sleeve are integrally formed.
5. The multi-core fiber array beam expanding contact of claim 3, wherein: the positioning key is formed by extending forward the front end of the annular sleeve fixed on the periphery of the outer sleeve.
6. The multi-core fiber array beam expanding contact of claim 2, wherein: the optical fibers forming the optical fiber array are arranged in layers from inside to outside, the adjacent optical fibers of the same layer and the different layers are tangent to the outer periphery of the optical fibers, and the outer Zhou Jun of the optical fibers positioned at the outermost layer is tangent to the inner peripheral surface of the inner sleeve.
7. An optical fiber connector is characterized by comprising the multi-core optical fiber array beam expansion contact piece according to any one of claims 2-6, and further comprising a first positioning end matched and positioned with a positioning structure of the multi-core optical fiber array beam expansion contact piece assembled in the connector and a second positioning end matched and positioned with a positioning structure of an opposite-plug multi-core optical fiber array beam expansion contact piece, wherein the first positioning end and the second positioning end are coaxially distributed.
8. The fiber optic connector of claim 7, wherein the positioning structure is a positioning key and the first and second positioning ends are positioning slots at opposite ends of a positioning sleeve.
9. The fiber optic connector of claim 8, wherein a ceramic ferrule is also positioned within the positioning sleeve, and the outer sleeves of the two mated multicore fiber array expansion contacts are mated at the inner end of the ceramic ferrule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320550647.6U CN219978561U (en) | 2023-03-20 | 2023-03-20 | Multi-core optical fiber array beam expansion contact piece and optical fiber connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320550647.6U CN219978561U (en) | 2023-03-20 | 2023-03-20 | Multi-core optical fiber array beam expansion contact piece and optical fiber connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219978561U true CN219978561U (en) | 2023-11-07 |
Family
ID=88589977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320550647.6U Active CN219978561U (en) | 2023-03-20 | 2023-03-20 | Multi-core optical fiber array beam expansion contact piece and optical fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219978561U (en) |
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2023
- 2023-03-20 CN CN202320550647.6U patent/CN219978561U/en active Active
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