【摘要】 波长编码信号解调是实现光纤光栅多参量、多点分布式传感网络的核心技术之一。总结了光纤光栅传感信号解调的一般原理和技术难点,分类评述了常用解调方法的工作机理、特点和性能。同时,提出了一种新的闭环反向锁定解调方法,它既具有高波长分辨率(优于2pm)的优点,又有效降低了系统成本。更多还原

【Abstract】 Wavelengthencoded signal demodulation is one of the key techniques to achieve fiber grating distributed sensing network. This paper summarizes the general principle and technical problems in demodulation of fiber grating sensing signal. The principle of operation, characteristics and functions of commonly used demodulating methods are described. Meanwhile, a new scheme of reverse locking method ,which has the advantages of both high resolution and low cost is proposed.更多还原