波长编码信号的解调是光纤光栅传感系统进入实用化的关键技术之一.本文讨论了光纤光栅传感信号解调的基本原理,分析了国内外提出的常用解调方法的工作机理和特点,并总结了信号解调过程中存在的主要技术难点,指出其发展方向,为光纤光栅传感系统解调部分的设计提供了依据.

Wavelength-encoded signal demodulation is one of the key techniques for the fiber Bragg grating sensing systems to enter into a practicable step. This paper discusses the general principle in demodulation of FBG sensing signal. The mechanism of operation, characteristics and function of commonly used demodulating methods are analyzed.Moreover,the main technical problems and development direction in signal demodulation of FBG are summarized. This paper provides foundation for the design of the demodulation based on FBG sensor system.