Tool for improving ultraviolet curing efficiency of optical fiber ring

Abstract

A tool for improving the ultraviolet curing efficiency of an optical fiber ring comprises a framework core, side plates are installed on the two sides of the framework core, light guide diaphragms used for transmitting light are arranged on the inner sides of the side plates, a frameless optical fiber ring is wound between the two side plates, and the light guide diaphragms are used for separating the side plates from the frameless optical fiber ring. By arranging the light guide membrane on the inner side of the side plate, ultraviolet light can be more effectively guided into the side face and the bottom of the optical fiber ring, and therefore the whole curing time is remarkably shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of polarization-maintaining optical fiber rings for optical fiber gyros, and particularly relates to a tool for improving the ultraviolet curing efficiency of optical fiber rings. Background Art

[0002] A fiber optic gyroscope (FOG) is an interferometer-type angular velocity measurement device based on the Sagnac effect and constructed from a fiber optic ring. When the FOG is stationary, light from a light source is split into two beams traveling in opposite directions through a Y-waveguide. After traveling through the fiber optic ring, the two beams return to the Y-waveguide at the same time. When the FOG rotates relative to inertial space, the fiber optic ring rotates as well, causing the two beams to return to the Y-waveguide at different times. This creates an optical path difference between the two beams, which is proportional to the angular velocity of the FOG. By detecting this optical path difference, changes in angular velocity can be measured. The fiber optic ring is the core sensor for sensing angular velocity, and its accuracy directly determines the ultimate accuracy of the FOG's angular velocity sensing.

[0003] Fiber ring is a ring optical device with a length of several hundred meters to several dozen kilometers and a diameter of several millimeters to several thousand millimeters, which is made by winding polarization-maintaining optical fiber according to a special winding method. During the winding process, liquid UV glue is usually evenly coated around the optical fiber by tape or brushing glue (attached Figure 1 ), after the winding is completed, the UV glue solidifies from liquid to solid under the irradiation of UV lamp, fixing the optical fiber into a whole, which can ensure the stable performance of the optical fiber ring in complex environments.

[0004] The traditional UV curing method is to place the wound fiber ring under a UV light source (attached Figure 2 ), UV light penetrates the ring from top to bottom, and the curing reaction also proceeds from top to bottom, meaning the glue at the top cures first and the glue at the bottom cures last. This curing method has two drawbacks: 1) the curing is uneven from top to bottom, with higher cure at the top and lower cure at the bottom; 2) as the number of fiber wrap layers increases, the curing efficiency decreases. Even with significantly increased curing time, the glue at the bottom may still not fully cure due to the reduced UV light penetration. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a tooling for improving the UV curing efficiency of an optical fiber ring. By arranging a light-guiding film on the inner side of the side plate, ultraviolet light can be more effectively introduced into the side and bottom of the optical fiber ring, thereby significantly shortening the entire curing time.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A tool for improving the ultraviolet curing efficiency of an optical fiber ring includes a skeleton core, side panels are installed on both sides of the skeleton core, and light-guiding membranes for light transmission are provided on the inner sides of the side panels. The space between the two side panels is used to wind a skeleton-free optical fiber ring, and the light-guiding membrane is used to separate the side panels from the skeleton-free optical fiber ring.

[0008] Preferably, the thickness of the diaphragm is 0.15 mm to 0.3 mm.

[0009] Preferably, the diaphragm is transparent or frosted.

[0010] Preferably, side plates are detachably mounted on both sides of the skeleton core, and the side plates are annular plates. The skeleton core includes a central cylinder, and plug posts are provided on both sides of the central cylinder, and the plug posts are used to be plugged into the center of the annular plates.

[0011] Preferably, the side panels are made of light-transmitting material.

[0012] Preferably, a light-guiding film made of PP or PVC is provided on the inner side of the side panel.

[0013] The utility model can achieve the following beneficial effects:

[0014] 1. By installing a light-guiding film on the inner side of the side panel, UV light can be more effectively directed to the sides and bottom of the fiber optic ring, significantly shortening the entire curing time. For example, for a 64-layer fiber optic ring, the curing time is reduced from 90 minutes to 60 minutes.

[0015] 2. The light guide film ensures the uniform distribution of UV light on the entire surface of the fiber ring, reducing the area of ​​insufficient light and improving the consistency and quality of the curing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a diagram of the bonding structure of optical fiber and glue in the prior art;

[0018] Figure 2 This is the effect diagram of the traditional UV curing method;

[0019] Figure 3 This is a rendering of the curing method of the utility model.

[0020] In the figure, there are skeleton core 1, side plate 2, light guide film 3, ultraviolet light source 4, optical fiber 5, glue 6, and skeleton-free optical fiber ring 7. DETAILED DESCRIPTION

[0021] The preferred solution is Figure 3As shown, a tooling for improving the UV curing efficiency of an optical fiber ring includes a skeleton core 1, side panels 2 are detachably installed on both sides of the skeleton core 1, and a light-guiding film 3 made of PP or PVC is provided on the inner side of the side panels 2. The space between the two side panels 2 is used for winding a skeleton-free optical fiber ring, and the light-guiding film 3 is used to separate the side panels 2 from the skeleton-free optical fiber ring.

[0022] Specifically, a layer of transparent or frosted PP or PVC film is attached to the inner side of the side plate (the side of the ring body), with a thickness of 0.15mm-0.3mm. The film is required to be attached flatly to the side plate, without scratches and wrinkles on the surface that may affect the arrangement of the optical fibers. After the normal winding of the optical fiber is completed, when the optical fiber ring is UV-cured, the pre-attached film can be used as a light guide film (attached Figure 3 ), directing the upper ultraviolet light into the side and bottom of the ring body, the upper, side and bottom of the optical fiber ring can start ultraviolet curing at the same time, improving the curing uniformity while greatly improving the curing efficiency and reducing the curing time.

[0023] Through the improvement of this utility model, better technical effects have been achieved in practical applications:

[0024] For a typical 64-layer fiber optic ring, the original curing time was 90 minutes, while the improved curing time is 60 minutes. The original curing method made it difficult to cure the bottom of a fiber optic ring with more than 96 layers, but the improved method can cure the bottom of a fiber optic ring with more than 144 layers.

[0025] At the same time, further optimization can be carried out by directly replacing the side panel material of the skeleton-free optical fiber surround tooling with a light-transmitting material, which can further increase the curing uniformity and improve the curing efficiency.

[0026] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A tool for improving the UV curing efficiency of an optical fiber ring, comprising a skeleton core (1), with side panels (2) mounted on both sides of the skeleton core (1), characterized in that: A light-guiding film (3) for transmitting light is provided on the inner side of the side plate (2); a skeleton-free optical fiber ring is wound between the two side plates (2); and the light-guiding film (3) is used to separate the side plate (2) from the skeleton-free optical fiber ring.

2. The tooling for improving the UV curing efficiency of an optical fiber ring according to claim 1, characterized in that: Diaphragm thickness 0.15mm-0.3mm.

3. The tooling for improving the UV curing efficiency of an optical fiber ring according to claim 1, characterized in that: The diaphragm is transparent or frosted.

4. The tooling for improving the UV curing efficiency of an optical fiber ring according to claim 1, characterized in that: Side plates (2) are detachably mounted on both sides of the skeleton core (1), and the side plates (2) are annular plates. The skeleton core (1) comprises a central cylinder, and plug posts are provided on both sides of the central cylinder, and the plug posts are used to be plugged into the center of the annular plate.

5. The tooling for improving the UV curing efficiency of an optical fiber ring according to claim 1 or 4, characterized in that: The side panels (2) are made of light-transmitting material.

6. The tooling for improving the UV curing efficiency of an optical fiber ring according to claim 1 or 4, characterized in that: A light-guiding film (3) made of PP or PVC material is provided on the inner side of the side panel (2).

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