CN211402849U

CN211402849U - Thermal beam expanding optical fiber array

Info

Publication number: CN211402849U
Application number: CN202020337062.2U
Authority: CN
Inventors: 邱锦和
Original assignee: Zhongshan Meisu Technology Co ltd
Current assignee: Zhongshan Meisu Technology Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-09-01
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a thermal beam expanding optical fiber array, including glass V type groove, the right side in glass V type groove is provided with the thermal beam expanding optical fiber body, and the left side of thermal beam expanding optical fiber body extends to the inner chamber in glass V type groove and is provided with optic fibre and expands the beam section. The utility model discloses a set up glass V type groove, the thermal beam fiber body that expands, optic fibre expands the bundle section, the glass apron, UV glue, the fiber covering, optic fibre core and optic fibre thermal beam expanding fibre core, use the thermal beam fiber body that expands to replace ordinary single mode fiber, because of the thermal beam fiber body mode field diameter can match VSCEL laser better, make 45 fiber array follow the vertical coupling efficiency of VSCEL laser and improve 80 ~ 90% from 40 ~ 60% by a wide margin, the fine thermal beam expanding technique is a mature manufacturing technique that has used on a large scale, consequently this kind of 45 fiber array that expands is warm is controllable in manufacturing cost, easy batch production, the problem of the lower problem of current 45 fiber array to laser vertical coupling efficiency has been solved.

Description

Thermal beam expanding optical fiber array

Technical Field

The utility model relates to an optical fiber communication transmission technical field specifically is a hot beam expanding fiber array.

Background

The optical fiber array is an optical fiber device formed by accurately arranging a plurality of optical fibers together in parallel, and generally comprises a glass V-shaped groove, a glass cover plate, optical fibers and fixed glue, along with the development of a high-speed optical module and silicon photonic integrated technology, a 45-degree optical fiber array is required to be optically and vertically coupled with a VSCEL laser array or a silicon photonic chip, the conventional 45-degree single-mode optical fiber array only simply grinds or cuts a 45-degree angle on an optical fiber end face, and the VSCEL laser generally has a large divergence angle, so that the efficiency is low when the single-mode optical fibers are directly coupled, and is generally only 40-60% and not beneficial to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot beam expanding fiber array possesses the higher advantage to the perpendicular coupling efficiency of laser instrument, has solved the problem of the lower problem of current 45 fiber array to the perpendicular coupling efficiency of laser instrument.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a thermal beam expanding fiber array, includes glass V type groove, the right side in glass V type groove is provided with the thermal beam expanding fiber body, the left side of thermal beam expanding fiber body extends to the inner chamber in glass V type groove and is provided with optic fibre and expands the beam section, the left side and the right side at glass V type groove top are fixedly connected with glass apron and UV glue respectively.

Preferably, the heat beam expanding optical fiber body comprises an optical fiber cladding, and an optical fiber core and an optical fiber heat beam expanding fiber core are fixedly connected to two sides of an inner cavity of the optical fiber cladding respectively.

Preferably, the glass cover plate and the glass V-shaped groove are bonded by glue, and a 45-degree polishing surface is arranged on the left side of the glass V-shaped groove.

Preferably, the number of channels on the surface of the glass V-shaped groove can be 1-32, and the cross section of the heat beam expanding optical fiber body is circular.

Preferably, the surface of the thermal beam expanding optical fiber body is fixedly connected with UV glue, and the thermal beam expanding optical fiber body is positioned between the UV glue and the glass V-shaped groove.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up glass V type groove, the thermal beam fiber body that expands, optic fibre expands the bundle section, the glass apron, UV glue, the fiber covering, optic fibre core and optic fibre thermal beam expanding fibre core, use the thermal beam fiber body that expands to replace ordinary single mode fiber, because of the thermal beam fiber body mode field diameter can match VSCEL laser better, make 45 fiber array follow the vertical coupling efficiency of VSCEL laser and improve 80 ~ 90% from 40 ~ 60% by a wide margin, the fine thermal beam expanding technique is a mature manufacturing technique that has used on a large scale, consequently this kind of 45 fiber array that expands is expanded to the heat production cost is controllable, easy batch production, the problem of the lower problem of current 45 fiber array to laser instrument vertical coupling efficiency has been solved, this fiber array that expands to the heat, possess the higher advantage to laser instrument vertical coupling efficiency, be worth promoting.

2. The utility model discloses a set up glass V type groove, the installation of the thermal beam fiber body of expanding of can being convenient for, the channel number on glass V type groove surface can be 1 ~ 32 passageway simultaneously, through setting up UV glue, can fix the glass apron and the thermal beam fiber body on the surface in glass V type groove, through setting up the thermal beam fiber body that expands, can match VSCEL laser instrument better because of thermal beam fiber body mode field diameter that expands for 45 fiber array improves 80 ~ 90% from 40 ~ 60% by a wide margin with VSCEL laser instrument's vertical coupling efficiency.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a right side view of the structure of the present invention;

fig. 3 is the structure diagram of the thermal beam expanding optical fiber body of the present invention.

In the figure: 1. a glass V-shaped groove; 2. a glass cover plate; 3. a thermally expanded beam fiber body; 4. UV glue; 5. an optical fiber beam expanding section; 301. a fiber cladding; 302. a fiber core; 303. the optical fiber thermally expands the beam core.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", 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 and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, a heat-expanding optical fiber array includes a glass V-shaped groove 1, a heat-expanding optical fiber body 3 is disposed on the right side of the glass V-shaped groove 1, the left side of the heat-expanding optical fiber body 3 extends to the inner cavity of the glass V-shaped groove 1 and is provided with an optical fiber expanding section 5, a glass cover plate 2 and UV glue 4 are respectively fixedly connected to the left side and the right side of the top of the glass V-shaped groove 1, the heat-expanding optical fiber body 3 includes an optical fiber cladding 301, an optical fiber core 302 and an optical fiber heat-expanding fiber core 303 are respectively fixedly connected to both sides of the inner cavity of the optical fiber cladding 301, the glass cover plate 2 and the glass V-shaped groove 1 are bonded by glue, a 45 ° polished surface is disposed on the left side of the glass V-shaped groove 1, the number of channels on the surface of the glass V-shaped groove 1 may be 1-, the heat-expanding optical fiber body 3 is positioned between UV glue 4 and a glass V-shaped groove 1, the installation of the heat-expanding optical fiber body 3 can be facilitated by arranging the glass V-shaped groove 1, meanwhile, the number of channels on the surface of the glass V-shaped groove 1 can be 1-32, the glass cover plate 2 and the heat-expanding optical fiber body 3 can be fixed on the surface of the glass V-shaped groove 1 by arranging the UV glue 4, the vertical coupling efficiency of a 45-degree optical fiber array and a VSCEL laser is greatly improved from 40-60% to 80-90% by arranging the heat-expanding optical fiber body 3 and the heat-expanding optical fiber body 3, the optical fiber expanding section 5, the glass cover plate 2, the UV glue 4, a cladding optical fiber 301, an optical fiber core 302 and an optical fiber heat-expanding optical fiber core 303, the heat-expanding optical fiber body 3 is used for replacing a common single-mode optical fiber, because of 3 mode field diameters of the hot expanded beam fiber body can better match VSCEL laser, make 45 fiber array and VSCEL laser's vertical coupling efficiency improve 80 ~ 90% from 40 ~ 60% by a wide margin, fine hot expanded beam technique is a mature manufacturing technology that has applied on a large scale, consequently this kind of 45 hot expanded beam fiber array's manufacturing cost is controllable, easy batch production, the problem of the current 45 fiber array lower to laser vertical coupling efficiency has been solved, this hot expanded beam fiber array, possess the higher advantage of laser vertical coupling efficiency, be worth promoting.

When in use, firstly, the glass V-shaped groove 1 and the glass cover plate 2 are cleaned and dried by ultrasonic waves, the glass V-shaped groove 1 is placed into an assembly tool and fixed, the first heat beam expanding optical fiber body 3 is placed into the glass V-shaped groove 1, the front and back positions of the optical fibers are adjusted, the optical fiber beam expanding section 5 protrudes out of the end face of the V-shaped groove by about 1.5mm, the coating layer stripping junction is positioned at the small step position of the V-shaped groove, the tail part of the optical fiber is temporarily fixed on a clamp by using a single-sided adhesive tape, a plurality of optical fibers are fixed in sequence, the glass cover plate 2 is placed above the glass V-shaped groove 1 and is pressed tightly, glue is fixed at the inclined plane position of the small step, after the fixing glue is filled in the gap between the glass V-shaped groove 1 and the glass cover plate 2, the glue is fixed at the small step position of the glass V-shaped groove 1 by using UV glue, and (3) putting the assembled heat beam expanding optical fiber array into a high-temperature oven for baking so as to completely solidify glue, grinding the end face of the assembled optical fiber array, wherein during grinding, the front ends of the optical fiber beam expanding section 5 and the glass V-shaped groove 1 are simultaneously ground and polished as a whole, the whole polished surface forms an angle of 45 degrees with the horizontal bottom surface of the glass V-shaped groove 1, cleaning the optical fiber array, and inspecting the polished end face of the optical fiber array so as to finish the assembly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hot expanded beam fiber array, includes glass V type groove (1), its characterized in that: the right side of glass V type groove (1) is provided with hot beam expanding fiber body (3), the left side of hot beam expanding fiber body (3) extends to the inner chamber of glass V type groove (1) and is provided with optic fibre and expands beam section (5), the left side and the right side at glass V type groove (1) top are fixedly connected with glass apron (2) and UV glue (4) respectively.

2. The array of thermally expanded beam optical fibers of claim 1, wherein: the heat beam expanding optical fiber body (3) comprises an optical fiber cladding (301), and an optical fiber core (302) and an optical fiber heat beam expanding fiber core (303) are fixedly connected to two sides of an inner cavity of the optical fiber cladding (301) respectively.

3. The array of thermally expanded beam optical fibers of claim 1, wherein: the glass cover plate (2) and the glass V-shaped groove (1) are bonded by glue, and a 45-degree polishing surface is arranged on the left side of the glass V-shaped groove (1).

4. The array of thermally expanded beam optical fibers of claim 1, wherein: the number of channels on the surface of the glass V-shaped groove (1) can be 1-32, and the section of the heat beam expanding optical fiber body (3) is circular.

5. The array of thermally expanded beam optical fibers of claim 1, wherein: the surface of the thermal beam expanding optical fiber body (3) is fixedly connected with UV glue (4), and the thermal beam expanding optical fiber body (3) is located between the UV glue (4) and the glass V-shaped groove (1).