CN214122525U

CN214122525U - Ceramic optical fiber capillary tube

Info

Publication number: CN214122525U
Application number: CN202021886752.XU
Authority: CN
Inventors: 刘光兵
Original assignee: Suzhou Guangzhuo Communication Technology Co ltd
Current assignee: Suzhou Guangzhuo Communication Technology Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-09-03
Anticipated expiration: 2030-09-02

Abstract

The utility model relates to an optical fiber accessory technical field is a pottery optic fibre capillary particularly, which comprises a body, the body adopts ceramic material to make, this internal hole that is equipped with, the anterior segment is first hole section for fixed optical fiber covering, the back end is second hole section, is used for fixed optic fibre coating or optic fibre protective layer, first hole section and second hole section are the shoulder hole, first hole section be straight hole, the aperture is unanimous, second hole section is straight hole, the aperture is unanimous, second hole section aperture is greater than first hole section aperture, first hole section and second hole section between link up through the R angle, its advantage lies in: the capillary tube is made of ceramic materials and is manufactured in an injection molding mode, so that failures such as microcracks are avoided, and the reliability of the optical device is greatly improved; the coating layer is fixed in the ceramic capillary, the protection of the optical fiber stripping point is enhanced, and the reliability, the lateral pull resistance and other mechanical properties of the optical device are improved.

Description

Ceramic optical fiber capillary tube

Technical Field

The utility model relates to an optical fiber accessory technical field is a ceramic optic fibre capillary particularly.

Background

A Chinese patent is disclosed: a square optical fiber capillary of a minute structure, patent No.: 2017206269576, which is a glass body having a tapered bore at one end that interfaces with a circular bore.

Another chinese patent is disclosed: an optical fiber capillary having a tapered bore, patent No.: 2015206851680, which also has a tapered bore and a circular bore, the tapered bore and the circular bore being in abutting engagement. The optical fiber capillary tube has the advantages of small and novel structure, compact structure, contribution to device integration and capability of reducing the packaging size of the device.

There is also a published chinese patent: ceramic capillary for wavelength division multiplexer, patent No.: 2005200271438, the capillary tube body is a ceramic cylinder, and the axial center of the capillary tube body is provided with an optical fiber fixing hole; the optical fiber fixing hole is an axial diameter-variable through hole, namely the aperture of the leading-in end is matched with the outer diameter of the optical fiber, the aperture of the working end is matched with the fiber core of the optical fiber, and the transition section of the through hole is in tapered transition connection; the optic fibre fixed orifices work termination hole shape that is equipped with is circular, two circles are tangent or the runway is circular, also can set up 2 ~ 4 work termination hole shapes side by side and be the circular shape optic fibre fixed orifices, this utility model structure is simple, and fixed optical fiber connection dependable performance, effective increase of service life.

To facilitate the threading of the fiber into the capillary, the end of the capillary typically has a tapered bore, typically machined, as shown in fig. 1. However, the inner wall of the capillary tube is easily damaged by machining, and microcracks are generated. Epoxy glue can be injected into the capillary inner hole in the production process of the optical device to fix the optical fiber, the epoxy glue generally needs to be heated and cured, microcracks generated in the machining process are displayed after the glue is cured, the long-term reliability of the optical device is influenced, and particularly, the optical device is easy to lose efficacy after being screened by a cold-hot impact experiment. In addition, the optical fiber coating layer is not protected in the inner hole of the capillary tube by the taper hole at the tail end, so that external force applied to the optical fiber is easily transmitted to an optical fiber stripping point, and failure is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at solves two problems that prior art exists: 1. one end of the optical fiber capillary is provided with a taper hole, but the aperture of the taper hole is large, so that an optical fiber coating layer cannot be fixedly protected; 2. the optical fiber capillary body is made of glass, and the inner wall of the capillary is easily damaged by machining.

In order to achieve the purpose, the ceramic optical fiber capillary comprises a body and is characterized in that: the body adopts ceramic material to make, this internal hole that is equipped with, and the anterior segment is first inner hole section for fixed optical fiber cladding, and the back end is second inner hole section for fixed optical fiber coating or optical fiber protective layer, first inner hole section and second inner hole section are the shoulder hole.

Preferably, the first inner hole section is a straight hole with a uniform aperture, the second inner hole section is a straight hole with a uniform aperture, and the aperture of the second inner hole section is larger than that of the first inner hole section.

Preferably, the first inner hole section is connected with the second inner hole section through an angle R.

Preferably, the tail end of the rear section is provided with a taper hole, and the taper hole is used for tail rubber reservation.

Preferably, the front end of the body is provided with a chamfer.

Compared with the prior art, the utility model, its advantage lies in:

1. the capillary tube is made of ceramic materials and is manufactured in an injection molding mode, so that failures such as microcracks are avoided, and the reliability of the optical device is greatly improved;

2. the coating layer is fixed in the ceramic capillary, and the protection of the optical fiber stripping point is enhanced, so that the reliability, the lateral pull resistance and other mechanical properties of the optical device are improved;

3. compared with the processing of a glass capillary, the ceramic injection molding is easier to produce various structural characteristics, is beneficial to the coupling assembly of capillary product components, and is also beneficial to the clamping of various clamps in the production and manufacture of optical devices.

Drawings

FIG. 1 is a schematic diagram of a conventional fiber capillary structure;

FIG. 2 is a schematic view of the optical fiber capillary structure of the present invention;

in the figure: 1. the first inner hole section 2, the second inner hole section 3, the R angle 4, the taper hole 5, the chamfer 6 and the body.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and the structure and principle of the present invention will be clear to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Participate in fig. 2, the utility model relates to a ceramic fiber capillary, which comprises a body, the body adopts ceramic material to make, the inside through-hole that is equipped with of body, be the second inner bore section of the first inner bore section of anterior segment and back end respectively, first inner bore section and second inner bore section are the shoulder hole section, first inner bore section is used for fixed optical fiber covering, second inner bore section is used for fixed optical fiber coating or optical fiber protective layer, the external force that can avoid receiving on the optic fibre passes to the juncture of optical fiber covering and optical fiber coating, second inner bore section aperture is greater than first inner bore section aperture, and in order to avoid taking place the skew of optic fibre, consequently first inner bore section aperture is unanimous basically with optical fiber covering external diameter, second inner bore section aperture is unanimous basically with optical fiber coating external diameter. The first inner hole section is connected with the second inner hole section through an R angle, and the R angle can prevent the optical fiber from being scratched. The tail end of the second inner hole section is provided with a taper hole, so that an optical fiber can be conveniently inserted into the capillary, and meanwhile, the taper hole is used as a tail glue reserved area, so that the tail glue can be further dispensed for lateral pulling reinforcement. The front end of body is equipped with the chamfer, makes things convenient for the coupling equipment, simultaneously because the body is ceramic injection moulding, for the processing of glass capillary, changes and produces structural feature.

Claims

1. A ceramic optical fiber capillary comprising a body, characterized in that: the body adopts ceramic material to make, this internal hole that is equipped with, and the anterior segment is first inner hole section for fixed optical fiber cladding, and the back end is second inner hole section for fixed optical fiber coating or optical fiber protective layer, first inner hole section and second inner hole section are the shoulder hole.

2. A ceramic optical fiber capillary as claimed in claim 1, wherein: the first inner hole section is a straight hole with a consistent aperture, the second inner hole section is a straight hole with a consistent aperture, and the aperture of the second inner hole section is larger than that of the first inner hole section.

3. A ceramic optical fiber capillary as claimed in claim 1, wherein: the first inner hole section is connected with the second inner hole section through an R angle.

4. A ceramic optical fiber capillary as claimed in claim 1, wherein: the tail end of the rear section is provided with a taper hole which is used for reserving tail rubber.

5. A ceramic optical fiber capillary as claimed in claim 1, wherein: the front end of the body is provided with a chamfer.