光纤光栅传感器的解调与复用技术

The multiplexing and demodulation of FBG sensors

光纤光栅传感器以其波长编码的独有优势适用于准分布式测量网络。文章介绍了光纤光栅传感器的解调方法,分析了其工作原理、性能和特点。提出了几种常用的光纤光栅复用方案,比较了它们的优缺点和组网规模,并指出准分布式传感网络的发展前景。

Fiber Bragg Grating （FBG） sensors are applicable to quasi-distributed sensing networks due to its unique characteristic of wavelength-encoded measurand information. In this paper, several demodulation techniques for FBG sensing networks are discussed with the emphasis on their principles, performances and characteristics. Several commonly-used FBG multiplexing methods are analyzed, their merits, demerits and the networking scale compared and the development prospects of quasi-distributed FBG sensing networks are discussed.