Fiber Bragg Grating Demodulation System Based on Equi-Intensity Cantilever Beam

被引：0
|
作者：
Li Hong [1 ]
Yan Weiping [1 ]
Shen Rensheng [2 ]
Wang Benyu [1 ]
机构：
[1] Dalian Univ Technol, Dept Elect Engn, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, Sch Phys & Optoelect Technol, State Key Lab Mat Laser, Dalian 116024, Peoples R China
来源：
MEASUREMENT TECHNOLOGY AND INTELLIGENT INSTRUMENTS IX | 2010年 / 437卷
关键词：
Fiber Bragg Grating; Matching Filtering Demodulation; Equi-intensity Cantilever Beam; SENSOR;
D O I：
10.4028/www.scientific.net/KEM.437.359
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Optical spectrum analyzer (OSA) can achieve the higher precision and sensitivity, but it is disadvantageous for translating optical signal into electrical signal. A fiber Bragg grating (FBG) matched filtering system based on equi-intensity cantilever beam was presented in this paper. Strain characteristics in different location of cantilever beam were described, and the strain sensitivity of matching grating demodulation based on equi-intensity cantilever beam was deduced mathematically. Strain characteristics of cantilever beam were verified, and the sensing effect of the system was tested. The Bragg wavelength shift range of the demodulating FBG placed on the cantilever beam reached 10 nm, and scanning velocity was 0.125 nm/s. The system could demodulate slow-altered sensing signal accurately and rapidly.
引用
收藏
页码：359 / +
页数：2
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