CN215769116U - Optical fiber array with mode conversion - Google Patents
Optical fiber array with mode conversion Download PDFInfo
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- CN215769116U CN215769116U CN202121204164.8U CN202121204164U CN215769116U CN 215769116 U CN215769116 U CN 215769116U CN 202121204164 U CN202121204164 U CN 202121204164U CN 215769116 U CN215769116 U CN 215769116U
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Abstract
The utility model provides an optical fiber array with mode conversion, which comprises a base, a cover plate, a first type optical fiber group and a second type optical fiber group, wherein the first type optical fiber group and the second type optical fiber group are correspondingly welded in a fusion mode, the second type optical fiber group is fixed in a V-groove group of the base through glue, the fusion point of the first type optical fiber group and the second type optical fiber group is located in the V-groove group, and the cover plate is pressed above the V-groove group and is bonded with the base. The optical fiber array with mode conversion ensures that the fusion points of optical fibers with different mode field diameters after butt joint can be better protected, the reliability of products is improved, and the loss is reduced.
Description
Technical Field
The utility model relates to the technical field of optical fibers, in particular to an optical fiber array with mode conversion.
Background
With the development of the optical fiber industry, optical fiber products are more and more widely used, including multiple fields such as communication, medical treatment, military industry and the like, and the applications of different systems are different. There are differences in system design, fiber selection, communication protocols, etc. Some fiber optic devices such as fiber optic sensors, optical chips, etc., or some small-scale communication networks, have begun to use small mode field diameter fibers (e.g., fibers having an inner diameter of 5 μm and an outer diameter of 125 μm, with a mode field diameter of 5 um). In order to connect with a common single-mode optical fiber (for example, an optical fiber with an inner diameter of 9 μm and an outer diameter of 125 μm, and a mode field diameter of 9 um) system, the optical fiber is required to be welded during the connection process, and then the welding point is protected from the influence of external force to cause the change of optical characteristics. The conventional method for protecting the welding points is to use a heat-shrinkable sleeve for storage at the welding points, but the welding points protected by the heat-shrinkable sleeve are easily influenced by external force to cause the change of optical loss, so that the functions of the product are influenced.
Disclosure of Invention
The utility model mainly aims to provide an optical fiber array with mode conversion, which can better protect the butt-jointed welding points of optical fibers with different mode field diameters, improve the reliability of products and reduce the loss.
In order to achieve the first object, the optical fiber array with mode conversion provided by the utility model comprises a base, a cover plate, a first type optical fiber group and a second type optical fiber group, wherein the first type optical fiber group and the second type optical fiber group are correspondingly welded, the second type optical fiber group is fixed in a V-groove group of the base through glue, the welding point of the first type optical fiber group and the second type optical fiber group is positioned in the V-groove group, and the cover plate is pressed above the V-groove group and is bonded with the base.
According to the scheme, the optical fiber array with the mode conversion function can better protect the butted optical fibers by protecting the butt joint points of different optical fibers between the V-shaped groove and the cover plate, improve the reliability of products, reduce the loss, reduce the protection parts outside devices, simplify the product structure, reduce the product volume and save the cost.
In a further scheme, the end face of the second type of optical fiber group exposed out of the base and the first side face of the base are in the same plane; the side face of the cover plate, which is on the same side as the first side face, is on the same plane with the first side face.
Therefore, the second type optical fiber group is exposed out of the optical fiber end face of the base, the first side face of the base and the side face, which is positioned on the same side with the first side face, of the cover plate are positioned on the same plane, so that the connection between the optical fiber array with the mode conversion and an external device can be facilitated.
In a further scheme, the end surfaces of the optical fibers of the second type of optical fiber group exposed out of the base are inclined at an angle of 8 degrees.
Therefore, the end face of the optical fiber is obliquely arranged at an angle of 8 degrees, and the transmission performance of light rays can be improved.
In a further scheme, the first type optical fiber group adopts ribbon optical fibers; the second type of optical fiber group uses bare fibers.
Therefore, the first type optical fiber group adopts ribbon optical fibers, the second type optical fiber group adopts bare fibers, the size is small, the arrangement of V grooves can be reduced conveniently, and the size of an optical fiber array with converted ribbon modes is reduced.
In a further scheme, the base further comprises a V-shaped groove part and an optical fiber fixing part, wherein the V-shaped groove part and the optical fiber fixing part are arranged on the same side of the base in a step shape; the V-groove is arranged on the V-groove part, and the first type optical fiber group is adhered to the optical fiber fixing part.
Therefore, when the first type optical fiber group and the second type optical fiber group are welded, the cladding of the welding end needs to be stripped, so that the base is provided with the V-shaped groove part and the optical fiber fixing part, the V-shaped groove part and the optical fiber fixing part are arranged in a step shape, the fiber cores can be kept parallel conveniently, and the loss of light transmission is reduced.
In a further scheme, the base and the cover plate are both made of transparent glass.
Therefore, the base and the cover plate are made of transparent glass, and observation and adjustment can be conveniently carried out when the optical fiber array with the mode conversion is assembled.
Drawings
FIG. 1 is a block diagram of an embodiment of a fiber array with mode conversion according to the present invention.
FIG. 2 is an exploded view of an embodiment of a fiber array with mode conversion according to the present invention.
FIG. 3 is an exploded view of an embodiment of a fiber array with mode conversion according to the present invention.
Fig. 4 is an enlarged view at a in fig. 3.
The utility model is further explained with reference to the drawings and the embodiments.
Detailed Description
As shown in fig. 1 and 2, in the present embodiment, the optical fiber array with mode conversion includes a base 1, a cover 2, a first type optical fiber group 3, and a second type optical fiber group 4. The base 1 and the cover plate 2 are both made of transparent glass. The base 1 includes a V-groove 11 and a fiber fixing portion 12, the V-groove 11 and the fiber fixing portion 12 are disposed on the same side of the base 1 in a step shape, and the V-groove 11 is higher than the fiber fixing portion 12 with respect to a bottom 14 of the base 1. The V-groove part 11 is provided with a V-groove group 13, the second type optical fiber group 4 is arranged in the V-groove group 13 of the base 1, and the first type optical fiber group 3 is bonded to the optical fiber fixing part 12 through glue 6. Referring to fig. 3 and 4, the first type optical fiber group 3 and the second type optical fiber group 4 are correspondingly welded, the welding point 5 of the first type optical fiber group 3 and the second type optical fiber group 4 is located in the V-groove group 13, and the cover plate 2 covers and presses the V-groove group 13 and is adhered to the base 1.
In addition, the end face 41 of the second type optical fiber group 4 exposed from the base 1 is in the same plane with the first side face 15 of the base 1. The side 21 of the cover plate 2 which is on the same side as the first side 15 is in the same plane as the first side 15. The fiber end face 41 of the second type of optical fiber group 4 exposed from the base 1 is inclined at an angle of 8 degrees. In this embodiment, the first type optical fiber group 3 uses a ribbon fiber, the second type optical fiber group 4 uses a bare fiber, and the bare fiber end 31 of the first type optical fiber group 3 is fusion-spliced with the second type optical fiber group 4. The number of the optical fibers of the first type optical fiber group 3 and the number of the optical fibers of the second type optical fiber group 4 can be set according to the requirement, in this embodiment, the number of the optical fibers of the first type optical fiber group 3 and the number of the optical fibers of the second type optical fiber group 4 are both 4. The fiber type of the first type fiber set 3 and the fiber mode field diameter of the second type fiber set 4 are different. In addition, the first type optical fiber group 3 may also employ bare fibers.
The optical fiber array with mode conversion of the embodiment comprises the following steps: (1) cleaning the base 1 and the cover plate 2 with materials; (2) performing cladding stripping cleaning on the first type optical fiber group 3 and the second type optical fiber group 4, and performing optical fiber fusion on the first type optical fiber group 3 and the second type optical fiber group 4; (3) placing a first type optical fiber group 3 and a second type optical fiber group 4, and placing a cover plate 2 under the CCD; (4) fixing the first type optical fiber group 3, the second type optical fiber group 4 and the cover plate 2 by glue; (5) the first side surface 15, the side surface 21, and the fiber end surface 41 are polished to check the appearance and dimensions, and the fabrication is completed.
Therefore, the optical fiber array with mode conversion of the utility model protects the butt joint points 5 of different optical fibers between the V-groove group 13 and the cover plate 2, so that better protection can be obtained after butt joint, the reliability of products is improved, the loss is reduced, meanwhile, the protection parts outside devices are reduced, the product structure is simplified, the product volume is reduced, and the cost is saved. In addition, because the mode field diameters of the two optical fibers are different, the fusion loss of the conventional fusion mode is very large, and the fusion loss of the optical fibers with different mode field diameters can reach the requirement of less than 0.3dB by adjusting and modifying fusion parameters such as discharge time, discharge intensity, Z-axis advancing distance and the like of the optical fiber array with the mode conversion.
It should be noted that the above is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept also fall within the protection scope of the present invention.
Claims (6)
1. The optical fiber array with the mode conversion function is characterized by comprising a base, a cover plate, a first type optical fiber group and a second type optical fiber group, wherein the first type optical fiber group and the second type optical fiber group are correspondingly welded in a fusion mode, the second type optical fiber group is installed in a V-groove group of the base, the fusion joint point of the first type optical fiber group and the second type optical fiber group is located in the V-groove group, and the cover plate covers the V-groove group and is bonded with the base.
2. The optical fiber array with mode conversion of claim 1, wherein:
the end face of the second type of optical fiber group exposed out of the base and the first side face of the base are positioned on the same plane;
the side face of the cover plate, which is on the same side with the first side face, is on the same plane with the first side face.
3. The optical fiber array with mode conversion of claim 2, wherein:
the end face of the optical fiber exposed out of the base of the second type optical fiber group is inclined at an angle of 8 degrees.
4. The optical fiber array with mode conversion according to any one of claims 1 to 3, wherein:
the first type optical fiber group adopts ribbon optical fibers;
the second type optical fiber group adopts bare fibers.
5. The optical fiber array with mode conversion according to any one of claims 1 to 3, wherein:
the base further comprises a V-shaped groove part and an optical fiber fixing part, and the V-shaped groove part and the optical fiber fixing part are arranged on the same side of the base in a step shape;
the V-groove is arranged on the V-groove, and the first type optical fiber group is adhered to the optical fiber fixing part.
6. The optical fiber array with mode conversion according to any one of claims 1 to 3, wherein:
the base and the cover plate are both made of transparent glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121204164.8U CN215769116U (en) | 2021-05-27 | 2021-05-27 | Optical fiber array with mode conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121204164.8U CN215769116U (en) | 2021-05-27 | 2021-05-27 | Optical fiber array with mode conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215769116U true CN215769116U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121204164.8U Active CN215769116U (en) | 2021-05-27 | 2021-05-27 | Optical fiber array with mode conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215769116U (en) |
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2021
- 2021-05-27 CN CN202121204164.8U patent/CN215769116U/en active Active
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