摘要
复用能力与解调速率是光纤光栅传感系统实用性的关键技术。采用在时分复用中引入了波分复用的方法,实现分布式测量,引入匹配光栅进一步降低了纯光时分复用系统中信道串扰的问题;系统中无传统扫描滤波或信道选择器件,大幅提升了解调速率。原型系统在一个风机叶片模型上进行测量与验证,实现了10 kHz速率下10个信道的应变实时监控。
Multiplexing and demodulation are key techniques for practical applications of fiber Bragg grating sensor system. A distributed stress monitor was achieved by simultaneously using wavelength division multiplexing（WDM） and time division multi- plexing（TDM） technology. Channel crosstalk was further reduced by using matched gratings. The demodulation speed was greatly improved without scanning filters. The prototype is verified using a wind blade model and successfully ten channels stress monitoring with a speed of 10 kHz is achieved.
出处
《仪表技术与传感器》
CSCD
北大核心
2013年第1期44-46,共3页
Instrument Technique and Sensor
基金
国家自然科学基金项目(60972003)
四川省科技支撑计划重大项目(2011GZ0239)
