摘要
介绍了匹配光纤布拉格光栅解调的基本原理,对采用此解调方法的传感器系统的参数进行了测试,并对系统进行定标。通过改进电路设计,检测极值点附近的对称点,提高了检测的精度。估算了系统的分辨率,温度分辨率为0．25℃,应变分辨率为2．07με。该系统具有结构简单、成本低、抗干扰能力强等特点。
The basic principle of the matched fiber Bragg grating demodulation method is introduced. Parameters of the sensing system with the demodulation method are tested, and the system is calibrated. By modifying design of the electronic circuit in the demodulation system, which detects the synunetrical points near the extreme point, the measuring resolution is improved. The resolution of the sensing system is estimated, which is 0.25℃ for the temperature and 2.07με for the strain. This system has some notable advantages, such as simple structure, low cost, insensitive to external environment and so on.
出处
《激光与光电子学进展》
CSCD
北大核心
2006年第5期47-50,共4页
Laser & Optoelectronics Progress
基金
重庆市教委(KJ051104)资助项目。
关键词
光纤光栅
传感器
解调
分辨率
fiber Bragg grating
sensor
demodulation
resolution
