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Non-uniform strain measurement along a f iber Bragg grating using optical frequency domain reflectometry 被引量:1
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作者 朱东方 张东生 +2 位作者 樊鹏 李立彤 郭永兴 《Chinese Optics Letters》 SCIE EI CAS CSCD 2013年第10期23-28,共6页
A novel method of measuring non-uniform strain along a fiber Bragg grating(FBG) using optical frequency domain reflectometry(OFDR) is proposed and experimentally demonstrated. This method can overcome the problems of ... A novel method of measuring non-uniform strain along a fiber Bragg grating(FBG) using optical frequency domain reflectometry(OFDR) is proposed and experimentally demonstrated. This method can overcome the problems of traditional non-uniform strain measurement methods for FBGs, i.e., the likelihood of chirping and multiple peaking in the spectrum when FBG is subjected to inhomogeneous strain fields. Wavelength interrogation is realized by OFDR with a narrow-line-width tunable laser as the optical source. When non-uniform strain distributions along areas adjacent to structural damage are measured by this method, good agreement is obtained between measurements and theoretical simulation results. 展开更多
关键词 FBG OFDR Non-uniform strain measurement along a f iber Bragg grating using optical frequency domain reflectometry
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