CN220603740U

CN220603740U - Polarization maintaining fiber end face imaging device

Info

Publication number: CN220603740U
Application number: CN202322371326.2U
Authority: CN
Inventors: 朱瑞峰
Original assignee: Nanjing Dvp OETech Co ltd
Current assignee: Nanjing Dvp OETech Co ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-15
Anticipated expiration: 2033-09-01

Abstract

The utility model discloses a polarization maintaining optical fiber end face imaging device, wherein in the device, a first optical fiber and a second optical fiber are oppositely arranged and coaxial; light emitted by the first illuminating lamp enters from the side face of the first optical fiber and propagates to the end face of the first optical fiber, the light propagated by the end face of the first optical fiber is reflected to the first microscope through the prismatic reflector, and the first CMOS image sensor receives the light amplified by the first microscope to form end face imaging of the first optical fiber; light emitted by the second illuminating lamp enters from the side face of the second optical fiber and propagates to the end face of the second optical fiber, the light propagated by the end face of the second optical fiber is reflected to the second microscope through the prismatic reflector, and the second CMOS image sensor receives the light amplified by the second microscope to form end face imaging of the second optical fiber. The utility model can generate clear fiber end face images in the welding process of the polarization maintaining fiber, and provide assistance for welding of the polarization maintaining fiber.

Description

Polarization maintaining fiber end face imaging device

Technical Field

The utility model relates to the technical field of imaging, in particular to a polarization maintaining fiber end face imaging device.

Background

The principle of the polarization-maintaining fiber is that a stress area is introduced into a cladding, and the stress area is symmetrically distributed around a fiber core to generate double refraction on incident light so as to maintain the polarization of polarized light. In the fusion process of the polarization maintaining fiber, not only the Ji Qianxin but also the stress areas are aligned, which requires a clear image of the fiber end face. Therefore, we propose a polarization maintaining fiber end face imaging device.

Disclosure of Invention

The utility model mainly aims to provide a polarization maintaining optical fiber end face imaging device which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the polarization maintaining optical fiber end face imaging device comprises a first optical fiber, a second optical fiber, a first lighting lamp, a second lighting lamp, a prismatic reflecting mirror, a first microscope, a second microscope, a first CMOS image sensor and a second CMOS image sensor, wherein the first optical fiber and the second optical fiber are oppositely arranged, and the first optical fiber and the second optical fiber are coaxial;

the first illuminating lamp is arranged on the side face of the first optical fiber, the second illuminating lamp is arranged on the side face of the second optical fiber, a fixed included angle is formed between the first illuminating lamp and the first optical fiber, and a fixed included angle is formed between the second illuminating lamp and the second optical fiber and is equal to the included angle formed between the first illuminating lamp and the first optical fiber;

light emitted by the first illuminating lamp enters from the side face of the first optical fiber and propagates to the end face of the first optical fiber, the light propagated by the end face of the first optical fiber is reflected to the first microscope through the prismatic reflector, and the first CMOS image sensor receives the light amplified by the first microscope to form end face imaging of the first optical fiber;

light emitted by the second illuminating lamp enters from the side face of the second optical fiber and propagates to the end face of the second optical fiber, the light propagated by the end face of the second optical fiber is reflected to the second microscope through the prismatic reflector, and the second CMOS image sensor receives the light amplified by the second microscope to form end face imaging of the second optical fiber.

Compared with the prior art, the utility model has the following beneficial effects:

the device can generate clear fiber end face images in the welding process of the polarization maintaining fiber, provides assistance for welding of the polarization maintaining fiber, and has simple structure and low application cost.

Drawings

FIG. 1 is an imaging schematic diagram of an end-face imaging device for polarization maintaining optical fibers according to the present utility model.

In the figure: 1-1, a first optical fiber; 1-2, a second optical fiber; 3-1, a first lighting lamp; 3-2, a second lighting lamp; 2. prismatic reflector; 4-1, a first microscope; 4-2, a second limiting mirror; 5-1, a first CMOS image sensor; 5-2, a second CMOS image sensor.

Description of the embodiments

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, a polarization maintaining optical fiber end face imaging device comprises a first optical fiber 1-1 and a second optical fiber 1-2, wherein the first optical fiber 1-1 and the second optical fiber 1-2 are oppositely arranged, and the first optical fiber 1-1 and the second optical fiber 1-2 are coaxial;

a first lighting lamp 3-1 and a second lighting lamp 3-2 are arranged at a distance from one end of the end face of the first optical fiber 1-1, which is opposite to the end face of the second optical fiber 1-2, wherein the first lighting lamp 3-1 forms a fixed included angle with the first optical fiber 1-1, the second lighting lamp 3-2 forms a fixed included angle with the second optical fiber 1-2, the included angle formed by the first lighting lamp 3-1 and the first optical fiber 1-1 is equal to the included angle formed by the second lighting lamp 3-2 and the second optical fiber 1-2, the first lighting lamp 3-1 is turned on, so that the first lighting lamp 3-1 injects light into the first optical fiber 1-1 and propagates along the end face of the first optical fiber 1-1, the second lighting lamp 3-2 is turned on, the second lighting lamp 3-2 injects light into the second optical fiber 1-2 and propagates along the end face of the second optical fiber 1-2;

the method comprises the steps that a prismatic reflector 2 is arranged between a first optical fiber 1-1 and a second optical fiber 1-2, a first microscope 4-1 and a second microscope 4-2 are respectively arranged on two sides of the prismatic reflector 2, a first CMOS image sensor 5-1 is arranged on one side, far away from the prismatic reflector 2, of the first microscope 4-1, a second CMOS image sensor 5-2 is arranged on one side, far away from the prismatic reflector 2, of the second microscope 4-2, light transmitted by the end face of the first optical fiber 1-1 is reflected by the prismatic reflector 2 and amplified by the first microscope 4-1, then end face imaging of the first optical fiber 1-1 is formed on the first CMOS image sensor 5-1, and light transmitted by the end face of the second optical fiber 1-2 is reflected by the prismatic reflector 2 and amplified by the second microscope 4-2, and then end face imaging of the second optical fiber 1-2 is formed on the second CMOS image sensor 5-2.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a polarization maintaining optical fiber terminal surface image device, includes first optic fibre (1-1), second optic fibre (1-2), first light (3-1), second light (3-2), prismatic reflector (2), first microscope (4-1), second microscope (4-2), first CMOS image sensor (5-1), second CMOS image sensor (5-2), its characterized in that: the first optical fiber and the second optical fiber (1-2) are oppositely arranged, and the first optical fiber (1-1) and the second optical fiber (1-2) are coaxial;

the first illuminating lamp (3-1) is arranged on the side face of the first optical fiber (1-1), and the second illuminating lamp (3-2) is arranged on the side face of the second optical fiber (1-2);

light emitted by the first illuminating lamp (3-1) enters from the side face of the first optical fiber (1-1) and propagates to the end face of the first optical fiber (1-1), and light emitted by the second illuminating lamp (3-2) enters from the side face of the second optical fiber (1-2) and propagates to the end face of the second optical fiber (1-2);

the light rays transmitted by the end face of the first optical fiber (1-1) are reflected to the first microscope (4-1) through the prismatic reflector (2), and the first CMOS image sensor (5-1) receives the light rays amplified by the first microscope (4-1) to form end face imaging of the first optical fiber (1-1);

the light rays transmitted by the end face of the second optical fiber (1-2) are reflected to the second microscope (4-2) through the prismatic reflector (2), and the second CMOS image sensor (5-2) receives the light rays amplified by the second microscope (4-2) to form end face imaging of the second optical fiber (1-2).

2. The polarization maintaining fiber end face imaging device according to claim 1, wherein: the first illuminating lamp (3-1) and the first optical fiber (1-1) form a fixed included angle; the second illuminating lamp (3-2) and the second optical fiber (1-2) form a fixed included angle, and the included angle formed by the first illuminating lamp (3-1) and the first optical fiber (1-1) is equal.