摘要
设计了分布式光纤光栅应变和温度同时测量系统，光源为时钟脉冲宽带光源，结合时分和波分复用技术解决光纤光栅传感网络的复用寻址问题，选用不同包层直径光纤相熔接的应变补偿法传感头设计方案，实现了温度和应变的同时测量。采用阵列波导光栅技术对传感信号进行解调，通过理论分析证实了系统方案的可行性。系统对应变和温度的测量范围为0～2500μεE和25—120℃，误差分别为±17με和±1℃。
A distributed fiber Bragg grating （FBG） system for simultaneously measuring the strain and temperature is presented. A clock pulse wide band source is used as the Light source. The system integrates time division multiplexing（ TDM ） and wavelength division multiplexing （WDM） to solve the multiplexing addressing problem of FBG sensing network. Different cladding diameter fiber is selected as a sensing probe. It can realize measurement of strain and temperature simultaneously. Demodulation system adopts arrayed - waveguide grating （AWG）. The feasibility of the system is confirmed theoretically. The strain measurement range is from 0 to 2500 με and temperature measurement range from 25 to 120 ℃, and their errors arc ± 17με and ± 1℃ respectively.
出处
《计量学报》
CSCD
北大核心
2008年第1期29-32,共4页
Acta Metrologica Sinica
基金
国家自然科学基金(60377002)
燕山大学科技发展基金(YD200401)
