CN210626720U - High-precision optical fiber capillary tube - Google Patents
High-precision optical fiber capillary tube Download PDFInfo
- Publication number
- CN210626720U CN210626720U CN201921160203.1U CN201921160203U CN210626720U CN 210626720 U CN210626720 U CN 210626720U CN 201921160203 U CN201921160203 U CN 201921160203U CN 210626720 U CN210626720 U CN 210626720U
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- Prior art keywords
- capillary
- optical fiber
- nail
- leading
- hole
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Abstract
The utility model provides a high accuracy optic fibre capillary, including capillary body and capillary nail, open the axial direction department of capillary body has the optic fibre fixed orifices, both ends all are provided with leading-in stiff end about the optic fibre fixed orifices, leading-in stiff end is the horn mouth type, leading-in stiff end is the bell mouth structure, the capillary nail includes through-hole, conical body and nail cap, the axial direction of capillary nail is located to the through-hole, the internal diameter of through-hole equals the internal diameter of two leading-in optic fibre fixed orifices between the stiff end, the length of conical body is less than the length of bell mouth, the capillary nail is fixed in the leading-in stiff end at optic fibre fixed orifices left and right sides both ends through the viscose. The length of the conical body is smaller than that of the conical hole, so that glue cannot flow into the optical fiber fixing hole, the polarization maintaining optical fiber line is in contact with the glue as few as possible, the influence of glue stress is reduced, and the precision of the optical fiber capillary is improved.
Description
Technical Field
The utility model relates to an optical fiber capillary technical field especially relates to a high accuracy optical fiber capillary.
Background
With the rapid development of optical fiber communication networks in the prior art, a large number of optical devices with high performance and low price are required. In particular, the optical fiber is packaged in the capillary, and the optical fiber is fixed in the capillary by glue, and due to the slight difference between the operating environment and the operator, the manufactured optical fiber capillary often has stress action, so that the capillary cracks.
SUMMERY OF THE UTILITY MODEL
For overcoming the problem that the reduction that exists among the prior art glued the stress influence, the utility model provides a high accuracy optic fibre capillary.
A high-precision optical fiber capillary comprises a capillary body and a capillary nail, wherein an optical fiber fixing hole is formed in the axial center of the capillary body, the left end and the right end of the optical fiber fixing hole are both provided with leading-in fixing ends which are in a horn mouth shape, the leading-in fixed ends are in a tapered hole structure, the inner diameter of an optical fiber fixed hole between the two leading-in fixed ends is matched with the outer diameter of an optical fiber cladding, the capillary nail comprises a through hole, a conical body and a nail cap, the through hole is arranged at the axial center of the capillary nail, the inner diameter of the through hole is equal to the inner diameter of the optical fiber fixing hole between the two leading-in fixing ends, the length of the conical body is smaller than that of the conical hole, the widest internal diameter of the conical body is the same as that of the conical hole, and the capillary nail is fixed at the guiding-in fixing ends at the left end and the right end of the optical fiber fixing hole through viscose.
In a preferred embodiment of the present invention, the capillary body may be provided with one or more optical fiber fixing holes in the axial direction as required, and both ends of each optical fiber fixing hole are provided with a guiding fixing end.
In a preferred embodiment of the present invention, after the capillary nail is nailed into the capillary body, the axial leads of the capillary nail and the capillary body coincide with each other.
In a preferred embodiment of the present invention, the capillary body and the capillary pin are made of the same material.
In a preferred embodiment of the present invention, the nail cap is cylindrical, and the thickness thereof is negligible with respect to the length of the capillary body.
In a preferred embodiment of the present invention, the nail cap is hexagonal and has a thickness that is negligible with respect to the length of the capillary body.
In a preferred embodiment of the present invention, a plurality of interference ribs i are uniformly adhered to the inner wall of the optical fiber fixing hole in the axial direction.
In a preferred embodiment of the present invention, the interference ridge i is semicircular.
In a preferred embodiment of the present invention, a plurality of interference convex strips ii are uniformly adhered to the inner wall of the tapered hole structure of the leading-in fixed end.
In a preferred embodiment of the present invention, the interference ridge ii is semicircular.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) after the capillary nail is nailed into the capillary body, because the connection length is less than the length of the leading-in fixed end, a breaking section is arranged between the capillary nail through hole with the same inner diameter and the optical fiber fixing hole, and the glue is filled in the gap between the inner wall of the capillary and the optical fiber cladding through the capillary action, so that the capillary action of the glue is invalid at the breaking section, the glue can not flow into the optical fiber fixing hole at the rear end, the contact between the polarization-maintaining optical fiber line and the glue is reduced as much as possible in the capillary, the influence of glue stress is reduced, the stability of a stress axis in the polarization-maintaining optical fiber line is improved, the high-precision requirement of the polarization-maintaining optical fiber head on the emergent light polarization direction of the optical fiber line is met, and the precision of the optical fiber;
(2) the interference convex strips are uniformly adhered to the inner walls of the taper hole structures of the optical fiber fixing hole and the guiding fixing end respectively, so that the condition that the optical fiber fixing hole is wound or blocked when a plurality of optical fibers are inserted can be avoided, and the interference convex strips are used for enhancing the stress bearing capacity of the capillary tube.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a high-precision optical fiber capillary according to the present invention;
in the figure: 1-a capillary body; 2-optical fiber fixing holes; 21-leading in the fixed end; 2101-tapered hole configuration; 22-interference ribs II; 23-interference ridges I; 3-capillary nail; 31-a through hole; a 32-cone; 33-nail cap.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Please refer to fig. 1, which is a schematic structural diagram of a preferred embodiment of a high-precision optical fiber capillary according to the present invention, including a capillary body 1 and a capillary pin 3, wherein an optical fiber fixing hole 2 is opened at an axial center of the capillary body 1, both left and right ends of the optical fiber fixing hole 2 are provided with a guiding fixing end 21, the guiding fixing end 21 is in a bell mouth shape, the guiding fixing end 21 is in a conical hole structure 2101, an inner diameter of the optical fiber fixing hole 2 between the two guiding fixing ends 21 is matched with an outer diameter of an optical fiber cladding, the capillary pin 3 includes a through hole 31, a conical body 32 and a pin cap 33, the through hole 31 is disposed at the axial center of the capillary pin 3, the inner diameter of the through hole 31 is equal to the inner diameter of the optical fiber fixing hole 2 between the two guiding fixing ends 21, the length of the conical body 32 is smaller than the length of the conical hole 2101, the widest inner diameter of the conical body 32 is, the capillary nail 3 is fixed at the leading-in fixing ends 21 at the left end and the right end of the optical fiber fixing hole 2 through viscose.
In this embodiment, the capillary body 1 may be provided with one or more optical fiber fixing holes 2 in the axial direction as required, and the two ends of each optical fiber fixing hole 2 are provided with the introduction fixing ends 21.
In the present embodiment, after the capillary pin 3 is driven into the capillary body 1, the axial lines of the two are overlapped.
In the present embodiment, the capillary body 1 and the capillary pin 3 are made of the same material.
In this embodiment, the nut 33 is cylindrical or hexagonal in shape and has a thickness that is negligible relative to the length of the capillary body 1.
In this embodiment, a plurality of interference ribs i 23 are uniformly adhered to the inner wall of the optical fiber fixing hole 2 in the axial direction.
In this embodiment, a plurality of interference ribs II 22 are uniformly adhered to the inner wall of the tapered hole structure 2101 of the lead-in fixing end 21.
Further, in the present embodiment, the interference ridge i 23 and the interference ridge ii 22 are semicircular.
The utility model discloses nail the capillary into the capillary body, because its connection length is less than the length of leading-in stiff end, make to have a disconnection section between the same capillary nail through-hole of internal diameter and the optic fibre fixed orifices, and glue is full of the space between capillary inner wall and the optic fibre covering through capillary, this just makes the capillary of gluing inefficacy at this disconnection section department, glue just can not flow in the optic fibre fixed orifices of rear end, this just makes inside the capillary, polarization maintaining fiber line and the contact of glue be as little as possible, reduce the influence that receives the glue stress, thereby the stability of stress axis in the polarization maintaining fiber line has been improved, satisfy the high accuracy requirement of polarization maintaining fiber head to the emergent light polarization direction of its fiber line, the precision of optic fibre capillary has been improved; the interference convex strips are uniformly adhered to the inner walls of the tapered holes of the optical fiber fixing hole and the leading-in fixing end respectively, so that the condition that the optical fiber fixing hole is wound or blocked when a plurality of optical fibers are inserted can be avoided, and the interference convex strips are used for enhancing the stress bearing capacity of the capillary tube.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. The utility model provides a high accuracy optic fibre capillary, a serial communication port, including capillary body (1) and capillary nail (3), the axial direction department of capillary body (1) opens has optic fibre fixed orifices (2), both ends all are provided with leading-in stiff end (21) about optic fibre fixed orifices (2), leading-in stiff end (21) is the horn mouth type, leading-in stiff end (21) is bell-mouthed structure (2101), the internal diameter of the optic fibre fixed orifices (2) between two leading-in stiff ends (21) and the external diameter phase-match of optic fibre covering, capillary nail (3) are including through-hole (31), cone (32) and nail cap (33), the axial direction of capillary nail (3) is located in through-hole (31), the internal diameter of through-hole (31) equals the internal diameter of the optic fibre fixed orifices (2) between two leading-in stiff ends (21), the length of cone (32) is less than the length of bell-mouthed structure (2101), the widest inner diameter of the conical body (32) is the same as that of the conical hole structure (2101), and the capillary nail (3) is fixed on the guide-in fixing ends (21) at the left end and the right end of the optical fiber fixing hole (2) through adhesive.
2. A high precision optical fiber capillary as claimed in claim 1, wherein: the capillary tube body (1) can be provided with one or more optical fiber fixing holes (2) in the axial direction according to the requirement, and the two ends of each optical fiber fixing hole (2) are provided with leading-in fixing ends (21).
3. A high precision optical fiber capillary as claimed in claim 1, wherein: after the capillary nail (3) is nailed into the capillary body (1), the axial leads of the capillary nail and the capillary body are superposed.
4. A high precision optical fiber capillary as claimed in claim 1, wherein: the capillary tube body (1) and the capillary tube nail (3) are made of the same material.
5. A high precision optical fiber capillary as claimed in claim 1, wherein: the nail cap (33) is cylindrical, and the thickness of the nail cap is negligible relative to the length of the capillary tube body (1).
6. A high precision optical fiber capillary as claimed in claim 1, wherein: the nail cap (33) is hexagonal, and the thickness of the nail cap is negligible relative to the length of the capillary tube body (1).
7. A high precision optical fiber capillary as claimed in claim 1, wherein: a plurality of interference convex strips I (23) are uniformly adhered to the inner wall of the optical fiber fixing hole (2) in the axial direction.
8. A high precision optical fiber capillary as claimed in claim 7, wherein: interference convex strip I (23) is semicircular.
9. A high precision optical fiber capillary as claimed in claim 1, wherein: and a plurality of interference convex strips II (22) are uniformly stuck on the inner wall of the conical hole structure (2101) of the leading-in fixed end (21).
10. A high precision optical fiber capillary as claimed in claim 9, wherein: the interference convex strips II (22) are semicircular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921160203.1U CN210626720U (en) | 2019-07-23 | 2019-07-23 | High-precision optical fiber capillary tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921160203.1U CN210626720U (en) | 2019-07-23 | 2019-07-23 | High-precision optical fiber capillary tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210626720U true CN210626720U (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921160203.1U Expired - Fee Related CN210626720U (en) | 2019-07-23 | 2019-07-23 | High-precision optical fiber capillary tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210626720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892295A (en) * | 2020-08-04 | 2020-11-06 | 南通永明光纤材料有限公司 | Production process for producing horn-mouth optical fiber capillary tube intermediate piece |
| CN115178436A (en) * | 2022-07-05 | 2022-10-14 | 广州大学 | Adhesive dispensing and curing device for multi-section capillary tube packaged fiber grating string |
-
2019
- 2019-07-23 CN CN201921160203.1U patent/CN210626720U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892295A (en) * | 2020-08-04 | 2020-11-06 | 南通永明光纤材料有限公司 | Production process for producing horn-mouth optical fiber capillary tube intermediate piece |
| CN115178436A (en) * | 2022-07-05 | 2022-10-14 | 广州大学 | Adhesive dispensing and curing device for multi-section capillary tube packaged fiber grating string |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 Termination date: 20210723 |
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| CF01 | Termination of patent right due to non-payment of annual fee |