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Embedment structure of optical fiber and embedment method for enhancing cohesive force between optical fiber and packaging material

A technology of packaging material and packaging material layer, applied in the direction of optical fiber/cable installation, etc., can solve the problems of inability to guarantee the accuracy of measurement, affect the protection effect of optical fiber, and reduce the sensitivity of sensing elements, etc., and achieve excellent mechanical properties, good resistance Aging properties, effects that are easy to implement

Inactive Publication Date: 2007-02-21
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these packaging methods all have the same problem: the non-rigid connection between the packaging material and the optical fiber results in asynchronous deformation. When the external pressure causes a large shear force at the bonding position, the bonding is easy to dislocate and fall off, which affects the optical fiber. At the same time, the sensitivity of the sensor element is reduced, and the accuracy of the measurement cannot be guaranteed; moreover, the structures of the above packaging methods are often complicated, and there are certain difficulties in practical promotion.

Method used

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  • Embedment structure of optical fiber and embedment method for enhancing cohesive force between optical fiber and packaging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Apply the modified acrylate adhesive evenly on the surface of the coating layer to be embedded in the optical fiber, and it will be completely solidified after one minute. increase the surface area of ​​the fiber.

[0020] After the adhesive is completely solidified, soak the part of the optical fiber to be embedded in silane coupling agent A-151 (vinyltriethoxysilane), soak for 5 to 10 minutes, take it out and dry it; Add coupling agent A-151 (vinyltriethoxysilane) at a mass ratio of coupling agent = 100:1, stir evenly, add curing agent according to the mass ratio of silicone rubber: curing agent = 50:1, and stir evenly again; Next, the optical fiber is placed in a cylindrical mold with a diameter of 1 cm for positioning, and the part to be embedded is located on the central axis of the mold; finally, silicone rubber is filled, and the silicone rubber is solidified.

[0021] The resulting embedded structure is as figure 1 As shown, 1 is the silicone rubber layer (tha...

Embodiment 2

[0023] Evenly apply mixed universal glue (the main component is epoxy resin) on the surface of the coating layer of the optical fiber to be embedded, and it will be completely solidified after ten minutes. The silicone rubber bond increases the surface area of ​​the fiber.

[0024] After the adhesive is completely solidified, soak the part of the optical fiber to be embedded in the silane coupling agent N-(β-aminoethyl-)-Y-aminopropyltriethoxysilane, take it out and dry it after soaking fully; In silicone rubber, add coupling agent N-(β-aminoethyl-)-Y-aminopropyltriethoxysilane according to the mass ratio of silicone rubber: coupling agent=100:2, and stir according to the silicone rubber: Curing agent = mass ratio of 100:1. Add the curing agent to the silicone rubber, and stir again; then place the optical fiber in a cylindrical mold for positioning, and the part to be embedded is located on the central axis of the mold; Filling of rubber, after the silicone rubber is solidif...

Embodiment 3

[0026] Evenly coat the surface of the coating layer of the optical fiber to be embedded with glass glue whose main component is acrylic ester, and it will be completely solidified after five minutes. Bonding increases the surface area of ​​the fiber.

[0027]After the adhesive is completely solidified, soak the part of the optical fiber to be embedded in the silane coupling agent KH-550 (γ-aminopropyltriethoxysilane), take it out and dry it after soaking fully; press the silicone rubber in the silicone rubber Add the coupling agent KH-550 (γ-aminopropyltriethoxysilane) at the mass ratio of coupling agent = 100:5, and add the curing agent according to the mass ratio of silicone rubber: curing agent = 75:1 after stirring evenly , Stir evenly again; Next, place the optical fiber in a cylindrical mold for positioning, and the part to be embedded is located on the central axis of the mold; Finally, fill the silicone rubber, and wait for the silicone rubber to solidify.

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Abstract

A method for burying optical fiber and its packaging material includes coating adhesive uniformly on surface of optical fiber to be buried and optical fiber sensing element, soaking it in silane coupler after said adhesive is cured, drying up coupler on optical fiber in the air then positioning it in mould, setting portion to be buried on central axle of mould and adding silane coupler in packaging material to make curing-forming. The burying structure for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to an embedded structure and an embedded method of an optical fiber. Background technique [0002] In recent years, optical fibers have been widely used in fields such as communication and sensing. From the point of view of use, optical fibers are either used for signal transmission or as functional sensors (fiber optic sensors or fiber grating sensors). As a sensing element, due to its smooth surface, it is prone to slipping with the measured object, so that the sensing result deviates from the actual value. In addition, it is fragile and easy to break, and it is not sensitive to radial pressure during sensing. It can be seen how to How to effectively protect the exposed optical fiber, how to reduce the measurement error caused by slippage and improve the measurement accuracy and sensitivity of the sensing device has become an urgent problem to be solved. Therefore, it is necessary to develop a more practical optical fiber embed...

Claims

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Application Information

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IPC IPC(8): G02B6/46
Inventor 余有龙胡亮
Owner JINAN UNIVERSITY
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