中文摘要：

光纤布喇格光栅（Fiber Bragg grating，简称光纤光栅：FBG）波长的解调是光纤光栅传感器应用的关键技术之一。在简单介绍光纤光栅传感原理的基础上，综述了近年来国内外多种光纤光栅波长解调系统的工作原理，分析了相应解调方法的优缺点，讨论了当前光纤光栅波长解调存在的技术难点，展望了其未来的研究方向。

英文摘要：

Wavelength demodulation is one of the key technologies for the applications of fiber Bragg grating （FBG） sensors. The sensing principles of FBG sensor are briefly introduced firstly. The recent developments in the technology of wavelength demodulation of FBG sensor are reviewed, and the characteristics of each method are analyzed as well. Finally the issues emerged during the wavelength demodulation of fiber Bragg grating sensor＇s are discussed and development trends in wavelength demodulation of FBG are summarized.