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Fiber-surface chemical plating technology used for fiber grating sensor

A fiber grating and surface chemistry technology, which is applied in the field of chemical plating on the surface of optical fibers, can solve problems such as no practical report, no interface mechanical index is given, and achieve the effects of reducing pollution, improving temperature sensitivity and strain sensitivity, and saving costs.

Inactive Publication Date: 2015-11-11
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the metallization of the surface of fiber gratings, Li Xiaofu and others studied the technology of optical fiber electroless nickel plating from the perspective of fiber grating packaging sensors in 2005, but did not give the specific mechanical indicators of the interface, and did not see the technology applied to it. Practical reports on fiber grating sensors

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0018] An optical fiber surface chemical plating process for a fiber grating sensor, the steps are as follows:

[0019] A. Remove the protective layer → water washing → degreasing → water washing → roughening → water washing → heat treatment → sensitization and activation 1-step method → ​​water washing → heat treatment on the surface of the optical fiber.

[0020] B. Place the pretreated optical fiber substrate in a plating solution with a temperature of 76° for full reaction; the formulation of the plating solution is: copper sulfate pentahydrate 12g / L; sodium potassium tartrate 20g / L; sodium hypophosphite 35g / L ; Nickel sulfate 2g / L; 2,2'-bipyridine 0.5g / L.

Embodiment 2

[0022] An optical fiber surface chemical plating process for a fiber grating sensor, the steps are as follows:

[0023] A. Remove the protective layer → water washing → degreasing → water washing → roughening → water washing → heat treatment → sensitization and activation 1-step method → ​​water washing → heat treatment on the surface of the optical fiber.

[0024] B. Place the pretreated optical fiber substrate in a plating solution with a temperature of 76° for full reaction; the formulation of the plating solution is: copper sulfate pentahydrate 9g / L; potassium sodium tartrate 15g / L; sodium hypophosphite 25g / L ; Nickel sulfate 1g / L; 2,2'-bipyridine 0.3g / L.

Embodiment 3

[0026] An optical fiber surface chemical plating process for a fiber grating sensor, the steps are as follows:

[0027] A. Remove the protective layer → water washing → degreasing → water washing → roughening → water washing → heat treatment → sensitization and activation 1-step method → ​​water washing → heat treatment on the surface of the optical fiber.

[0028] B. Place the pretreated optical fiber substrate in a plating solution with a temperature of 76° for full reaction; the formulation of the plating solution is: copper sulfate pentahydrate 11g / L; potassium sodium tartrate 18g / L; sodium hypophosphite 31g / L ; Nickel sulfate 1.5g / L; 2,2'-bipyridine 0.4g / L.

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Abstract

The invention discloses a fiber-surface chemical plating technology used for a fiber grating sensor. The fiber-surface chemical plating technology includes the following steps: A, a fiber base body is preprocessed, and a preprocessed piece is obtained; and B, the preprocessed piece is arranged in plating liquid for chemical plating, wherein one liter of plating liquid comprises 9g to 12 g of blue vitriol, 15 g to 20 g of seignette salt, 25 g to 35 g of sodium hypophosphite, catalysts and oxidation-reduction indicators. According to the fiber-surface chemical plating technology, the surfaces of fibers are metalized in a chemical copper plating manner, and the temperature sensitivity and the strain sensitivity of the fibers are improved.

Description

technical field [0001] The invention relates to an optical fiber surface chemical plating process for a fiber grating sensor. Background technique [0002] In the process of preparing fiber Bragg gratings, generally only the protective coating layer on the surface of the fiber is removed, which will greatly reduce the mechanical strength of the fiber; technology can effectively improve the mechanical properties of optical fibers and gratings, but the coating layer used in conventional fiber Bragg grating packaging methods is mostly polyoxygen resin, which is prone to aging and creep in harsh environments for too long, resulting in optical fiber Relative displacement occurs, which affects the measurement accuracy. At the same time, the temperature sensitivity of the conventional package is poor, so it is not suitable for use under some high-precision conditions. [0003] There are also many experts and scholars in China who have conducted research on the metallization of fib...

Claims

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Application Information

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IPC IPC(8): C23C18/38C23C18/18
Inventor 钟良冷雪来刘传慧
Owner SOUTHWEAT UNIV OF SCI & TECH
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