CN211375129U

CN211375129U - Connector for mechanically butting single-mode optical fiber and hollow-core optical fiber

Info

Publication number: CN211375129U
Application number: CN201922269698.8U
Authority: CN
Inventors: 张连军; 侯伟; 孙豪
Original assignee: Twinstar Technologies Co ltd
Current assignee: Twinstar Technologies Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-08-28
Anticipated expiration: 2029-12-17

Abstract

The utility model provides a connector for mechanical butt joint of single mode fibers and hollow fibers, which comprises a shell with a cavity inside, wherein the shell comprises a shell upper cover and a shell base matched with the shell upper cover, and the two ends of the shell upper cover and the shell base are fixedly connected through fastening nuts; the connecting block is arranged in the cavity of the shell and comprises a first connecting block and a second connecting block; and guide grooves are arranged at the middle position inside the shell and the middle position inside the connecting block. The utility model aims at providing a can adapt to the hollow optic fibre of different covering diameters, the guide way butt joint degree of depth is adjustable, the connector of single mode fiber and hollow optic fibre machinery butt joint that coupling efficiency is high.

Description

Connector for mechanically butting single-mode optical fiber and hollow-core optical fiber

Technical Field

The utility model relates to an optical fiber communication technology field, concretely relates to connector of single mode fiber and hollow optic fibre machinery butt joint.

Background

With the development of network technology, the design and installation of optical fiber networks are important parts of network wiring construction, and the splicing of optical fibers is an important link of optical fiber construction. At present, the optical fiber splicing technology usually adopts a mechanical connector, although the structure is simple and the installation is easy, the cladding diameter of the hollow optical fiber cannot be guaranteed to be stable and unchanged at present, in the prior art, a connecting block for butting the optical fiber inside the connector is integrally formed and cannot be adjusted, the single-mode optical fiber and the hollow optical fiber cannot be precisely butted when being butted, and the coupling loss is higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies of the prior art, the utility model aims at providing a hollow optic fibre that can adapt to different covering diameters, guide way butt joint degree of depth are adjustable, the connector of single mode fiber and the mechanical butt joint of hollow optic fibre that coupling efficiency is high.

In order to achieve the above object, the utility model adopts the following technical scheme:

a connector for mechanically butting a single-mode optical fiber and a hollow optical fiber comprises a shell with a cavity inside, wherein the shell comprises a shell upper cover and a shell base matched with the shell upper cover; the connecting block is arranged in the cavity of the shell and comprises a first connecting block and a second connecting block; the first connecting block comprises a first bottom plate and a first cover body matched with the first bottom plate, and the second connecting block comprises a second bottom plate and a second cover body matched with the second bottom plate; the middle joint of the upper shell cover and the shell base on one side and the middle joint of the first cover and the first base plate on the other side are provided with a first guide groove for fixing the single-mode optical fiber along the length direction of the shell, and the middle joint of the upper shell cover and the shell base on the other side and the middle joint of the second base plate and the second cover plate on the other side are provided with a second guide groove for fixing the hollow optical fiber along the length direction of the shell.

Preferably, one side of the first bottom plate is provided with a notch, and a convex block clamped with the notch is arranged at the corresponding position of the second bottom plate.

Preferably, the bottom of the cavity of the shell is provided with an elastic sheet, and the upper part of the elastic sheet is abutted against the first bottom plate and the second bottom plate; the upper cover of the shell is provided with a first bolt and a second bolt, the lower end of the first bolt penetrates through the upper cover of the shell to be abutted against the upper surface of the first cover body, and the lower end of the second bolt penetrates through the upper cover of the shell to be abutted against the upper surface of the second cover body.

Preferably, the inner diameters of the first guide groove and the second guide groove gradually increase from the middle of the housing to both ends of the housing to form a bell mouth shape.

Preferably, the cross section of the first guide groove and the cross section of the second guide groove are both V-shaped.

The utility model discloses the beneficial effect who has does:

1. compared with the prior art in which the connecting block in the shell is integrally formed and cannot be adjusted, the connecting block of the utility model comprises a first connecting block and a second connecting block, the bottom of the cavity of the shell is provided with an elastic sheet which is abutted against a first bottom plate and a second bottom plate, the lower ends of a first bolt and a second bolt which are arranged on the upper cover of the shell penetrate through the upper cover of the shell and are abutted against the upper surfaces of a first cover body and a second cover body respectively, the relative heights of the first connecting block and the second connecting block can be adjusted through the two bolts in the vertical direction, and then the relative positions of the first guide groove and the second guide groove to the interface are adjusted, so that the quick butt coupling is realized; specially, even the covering diameter of hollow optic fibre is different, the utility model discloses do through the cooperation of shell fragment and two bolts, and then finely tune single mode fiber with the butt joint position of hollow optic fibre, make the utility model discloses an adaptability is stronger, can satisfy the hollow optic fibre of different covering diameters and continue to use, very big improvement optical fiber coupling efficiency.

2. One side of first bottom plate is equipped with the notch, and the second bottom plate corresponds the position and is equipped with the lug with notch looks joint, makes first connecting block and second connecting block joint steadily on the horizontal direction, can guarantee that single mode fiber and hollow optic fibre deviate within 5 mu m at the horizontal direction fibre core, very big improvement the precision of guide way location, coupling efficiency is showing and is improving.

3. First guide way, second guide way are the internal diameter by in the middle of the casing to both ends crescent and be the V type groove of horn mouth form, can get rid of the single mode fiber and the stable fixing respectively of hollow optic fibre of coating in first guide way and second guide way with the tip, are different from among the prior art, fill in the user mode of guide way from connector one side, avoided the flock to intervene the coupling face and block up the inside microstructure of hollow optic fibre, effectively guaranteed the stability that optic fibre continues.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of the housing base of the present invention;

fig. 3 is a cross-sectional view of the present invention.

Detailed Description

The connector for mechanically butting the single-mode optical fiber and the hollow-core optical fiber comprises a shell, wherein a cavity is formed in the shell, the shell comprises a shell upper cover 3 and a shell base 1 matched with the shell upper cover, and the two ends of the shell upper cover 3 and the two ends of the shell base 1 are fixedly connected through fastening nuts 2. The connecting block is arranged in the cavity of the shell and comprises a first connecting block and a second connecting block, the first connecting block comprises a first bottom plate 511 and a first cover body 512 matched with the first bottom plate 511, and the second connecting block comprises a second bottom plate 521 and a second cover body 522 matched with the second bottom plate 521. As shown in fig. 2, a notch 514 is formed in one side of the first bottom plate 511, and a protrusion 524 clamped with the notch 514 is formed in a position corresponding to the second bottom plate 521, so that the first connection block and the second connection block are stably clamped in the horizontal direction, and it can be ensured that the fiber cores of the single-mode optical fiber 41 and the hollow-core optical fiber 42 deviate within 5 μm in the horizontal direction, thereby greatly improving the positioning accuracy of the guide groove, and significantly improving the coupling efficiency.

A first guide groove 513 is formed at the middle joint of the upper housing cover 3 and the housing base 1 on one side and the middle joint of the first cover body 512 and the first bottom plate 511 along the length direction of the housing, and a second guide groove 523 is formed at the middle joint of the upper housing cover 3 and the housing base 1 on the other side and the middle joint of the second bottom plate 521 and the second cover body 522 along the length direction of the housing; first guide way 513, second guide way 523 are all the internal diameter by in the middle of the casing to both ends crescent and be the V type groove of horn mouth form, can get rid of the tip the single mode fiber 41 and the hollow fiber 42 of coat stable fixing respectively in first guide way 513 and second guide way 523, are different from the user mode that the guide way was filled in to optic fibre from connector one side in prior art, the utility model discloses avoided the flock to intervene the coupling surface and blockked up hollow fiber 42 internal microstructure, effectively guaranteed the stability that optic fibre continues.

As shown in fig. 3, the bottom of the cavity of the housing is provided with a spring plate 6, and the upper part of the spring plate 6 is abutted against the first bottom plate 511 and the second bottom plate 521; the upper cover 3 of the shell is provided with a first bolt 31 and a second bolt 32, the lower end of the first bolt 31 penetrates through the upper cover 3 of the shell to be abutted against the upper surface of the first cover 512, the lower end of the second bolt 32 penetrates through the upper cover 3 of the shell to be abutted against the upper surface of the second cover 522, and the relative heights of the first connecting block and the second connecting block can be adjusted through the two bolts in the vertical direction by utilizing the matching of the elastic sheet 6 with the first bolt 31 and the second bolt 32, so that the relative positions of the first guide groove 513 and the second guide groove 523 to the interface are adjusted, and the quick butt coupling is realized; especially, even the cladding diameter of hollow optic fibre 42 is different, the utility model discloses do through the cooperation of shell fragment 6 and two bolts, and then finely tune single mode fiber 41 and hollow optic fibre 42's butt joint position, make the utility model discloses an adaptability is stronger, can satisfy the hollow optic fibre 42 of different cladding diameters and continue the use, very big improvement optical fiber coupling efficiency.

When the utility model is used, the single mode fiber 41 and the hollow fiber 42 with the coating removed at the end part are respectively clamped in the first guide groove 513 and the second guide groove 523, the first cover body 512, the second cover body 522 and the upper cover 3 of the shell are covered, and the fibers are fixed by the fastening nuts 2 arranged at the two ends of the shell; rethread first bolt 31 and second bolt 32 adjust the relative height of first connecting block and second connecting block respectively, and then finely tune single mode fiber 41 and hollow optic fibre 42's butt joint position, make the utility model discloses an adaptability is stronger, can satisfy different covering diameter's hollow optic fibre 42 and continue the use, very big improvement fiber coupling efficiency.

Claims

1. The utility model provides a connector of single mode fiber and hollow optic fibre machinery butt joint, is equipped with the casing of cavity including inside, the casing includes casing upper cover and rather than matched with casing base, and fastening nut fixed connection, its characterized in that are passed through at casing upper cover and casing base both ends: the connecting block is arranged in the cavity of the shell and comprises a first connecting block and a second connecting block; the first connecting block comprises a first bottom plate and a first cover body matched with the first bottom plate, and the second connecting block comprises a second bottom plate and a second cover body matched with the second bottom plate; the middle joint of the upper shell cover and the shell base on one side and the middle joint of the first cover and the first base plate on the other side are provided with a first guide groove for fixing the single-mode optical fiber along the length direction of the shell, and the middle joint of the upper shell cover and the shell base on the other side and the middle joint of the second base plate and the second cover plate on the other side are provided with a second guide groove for fixing the hollow optical fiber along the length direction of the shell.

2. A connector for mechanical mating of a single mode optical fiber and a hollow core optical fiber according to claim 1, wherein: one side of the first bottom plate is provided with a notch, and the corresponding position of the second bottom plate is provided with a convex block clamped with the notch.

3. The connector of claim 2, wherein the connector is configured to mechanically interface a single mode optical fiber with a hollow core optical fiber, and wherein: the bottom of the cavity of the shell is provided with an elastic sheet, and the upper part of the elastic sheet is abutted against the first bottom plate and the second bottom plate; the upper cover of the shell is provided with a first bolt and a second bolt, the lower end of the first bolt penetrates through the upper cover of the shell to be abutted against the upper surface of the first cover body, and the lower end of the second bolt penetrates through the upper cover of the shell to be abutted against the upper surface of the second cover body.

4. A connector according to claim 3, wherein said connector is adapted to mechanically interface a single mode optical fibre with a hollow core optical fibre, and wherein: the inner diameters of the first guide groove and the second guide groove are gradually increased from the middle of the shell to two ends to form a bell mouth shape.

5. The connector of claim 4, wherein the connector is configured to mechanically interface a single mode optical fiber with a hollow core optical fiber, and wherein: the cross sections of the first guide groove and the second guide groove are both V-shaped.