光电子技术, 2004, 24 (2): 118, 网络出版: 2006-06-08
基于匹配光栅对的传感解调装置
A Demodulation Scheme Based on Match Grating Pairs
摘要
提出并实验了一种新颖的匹配光栅对解调方案,受压电陶瓷驱动,解调光栅对传感光栅反射光波进行波长扫描,将传感光栅布拉格反射波长的漂移变为解调光栅透过的负脉冲在时域中间隔的变化进而确定待测应变量的大小.系统传感灵敏度的实验值为94.417 με/ms,具有-100~700με的传感测量范围.
Abstract
A novel technique for fiber Bragg grating sensor signal demodulation is introduced in this paper. The reflected wavelength shift of sensor grating affected by the measured strain is converted into variation of time interval between negative going pulses that is reflected by demodulation grating controlled by PZT. The sensing sensitivity of this system, which is with a resolution of 1.8 με, was demonstrated to be 94.417 με/ms experimentally.
赵洪霞, 刘盛春. 基于匹配光栅对的传感解调装置[J]. 光电子技术, 2004, 24(2): 118. 赵洪霞, 刘盛春. A Demodulation Scheme Based on Match Grating Pairs[J]. Optoelectronic Technology, 2004, 24(2): 118.