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Metal packaged fiber Bragg grating sensor and manufacturing method thereof

A technology of fiber optic Bragg and grating sensors, which is applied in the direction of using optical devices to transmit sensing components, measuring device casings, etc., can solve the problems of not being able to improve the strain sensitivity coefficient, and achieve the effects of wide application range, low cost, and strong protection

Inactive Publication Date: 2011-12-28
黄堃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] "Study on the Strain and Temperature Sensing Characteristics of Fiber Bragg Grating Sensors Packaged by Titanium Alloy Sheets" (Optoelectronics. Laser 2006.5), disclosed the use of titanium alloy sheets to package fiber optic grating sensors. Cannot increase gage factor

Method used

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  • Metal packaged fiber Bragg grating sensor and manufacturing method thereof
  • Metal packaged fiber Bragg grating sensor and manufacturing method thereof
  • Metal packaged fiber Bragg grating sensor and manufacturing method thereof

Examples

Experimental program
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example 1

[0054] Bond the fiber grating to the thin metal tube with glue, and put a metal base on both ends of the metal tube. There are solder spots on the metal base for welding with the object to be measured. The specific steps and parameters are as follows:

[0055] Such as figure 1 For the stainless steel pipe shown, the inner diameter is 0.7mm, the outer diameter is 1.0mm, and the length is 80mm (it can be changed appropriately to ensure that the grating part can be completely covered by the steel pipe). We choose 1:3 AB glue to bond the fiber grating and the metal pipe, and The combination between metal pipe and metal base. Such as figure 2 , image 3 The metal base shown, select the size parameters: thickness 4mm, length 30mm, semicircle diameter 10mm, welding hole diameter 5mm, steel pipe hole 1mm. The packaging environment is packaged at room temperature and normal pressure of 16.7°.

[0056] Steps:

[0057] Pass the fiber grating through the steel pipe, straighten the ...

example 2

[0059] Bond the fiber grating to the thin metal tube with glue, and put a metal base on both ends of the metal tube. There are solder spots on the metal base for welding with the object to be measured. The specific steps and parameters are as follows:

[0060] Stainless steel pipe, inner diameter 0.3mm, outer diameter 0.6mm, length 70mm (can be changed appropriately to ensure that the engraved grating part can be completely covered by the steel pipe). We choose 1:2 AB glue for bonding fiber gratings and metal pipes, as well as metal pipes. The bond between the tube and the metal base. Metal base, select size parameters: thickness 5mm, length 50mm, semicircle diameter 10mm, welding hole diameter 5mm, steel pipe hole 1mm, the specific operation steps are as above.

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Abstract

The invention discloses a metal-encapsulated fiber Bragg grating sensor and a manufacturing method thereof. By encapsulating the fiber Bragg grating in a steel pipe through a specific manufacturing method, the sensor of the invention improves the strain sensitivity compared with the prior art, and Easy to install.

Description

technical field [0001] The invention relates to an optical fiber sensing technology, in particular to an optical fiber Bragg grating sensor. Background technique [0002] Optical fiber sensing technology is a new technology formed with the development of optical fiber and optical fiber communication technology. Fiber optic sensors are fireproof, explosion-proof, high precision, low loss, small size, light weight, long life, high cost performance, good reusability, fast response, anti-electromagnetic interference, wide frequency range, large dynamic range, and easy transmission with optical fiber The system has the advantages of forming a telemetry network and is widely used in various industries. [0003] Fiber Bragg Grating Sensor (FBG) is a kind of fiber optic sensor. The sensing process based on fiber Bragg grating is to obtain sensing information by modulating the wavelength of fiber Bragg (Bragg) by external physical parameters. It is a wavelength Modulated fiber opti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/38G01D11/24
Inventor 黄堃刘畅姚开元聂翔宇
Owner 黄堃
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