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基于可调光纤F-P滤波器解调的分布式光纤光栅传感系统 被引量:7

A distributed FBG sensor system based on FBG array interrogation with a fiber Fabry-Perot tunable filter
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摘要 提出并实现了一种可满足工程实用要求的波分复用光纤光栅传感网络解决方案,系统通过可调谐光纤F-P滤波器的连续扫描实现波长信号的解调.该传感系统扫描带宽50 nm,单点工作带宽5 nm,对一般应用系统每根单纤可设20-30个点,系统最高扫描频率200 Hz,分辨率5 pm(约5με或0.5℃). A wavelength division multiplexed (WDM) FBG sensor network scheme to meet the practical requirements in projects is proposed and demonstrated in this paper. An optical fiber Fabry-Perot tunable filter (FFP-TF) is used in the system to demodulate the wavelength signals. The scanning bandwidth of the sensor system is 50 nm and the working bandwidth of each point is 5 nm. 20-30 FBGs can be embedded in a single optical fiber in a system of general use. The highest scanning frequency of the system is 200 Hz, and the resolution is 5 pm(about 5μεor 0. 5℃).
机构地区 武汉理工大学
出处 《海军工程大学学报》 CAS 2003年第5期5-8,16,共5页 Journal of Naval University of Engineering
基金 国家自然科学基金资助项目(50179029) 国家博士点基金资助项目(20010497003)
关键词 光纤光栅 传感网络 波分复用 波长解调 可调光纤F—P滤波器 fiber Bragg grating (FBG) sensor network wavelength division multiplexing (WDM) wavelength demodulation
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