RESPONSE ANALYSIS OF DISTRIBUTED FEEDBACK FIBER LASER SENSOR IN HIGH-FREQUENCY ULTRASONIC FIELD

摘要：

　　The response of the distributed feedback (DFB) fiber laser sensor under ultrasonic excitation is represented by the change in the reflection spectrum.In this paper, we simulate the strain of the axial distribution of DFB by finite element method and calculate the reflection spectrum by transfer matrix method.The results show that under the action of high-frequency ultrasonic, the wavelength shift of DFB is small, and it is not sensitive to high-frequency ultrasonic waves.The peak with lower reflectivity in the spectrum is distorted.

关键词： DFB laser fiber sensor Optical fiber ultrasonic sensing High-frequency ultrasonic

作者: Jia-yi CHEN Xian-mei WU Song LIU Cong WANG

作者单位: State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, P.R.China;University of Chinese Academy of Sciences, Beijing 100049, P.R.China

会议类型: 国际会议

会议名称: The 2019 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2019(第13届)全国压电和声波理论及器件技术研讨会)

会议地点: 哈尔滨

会议语种:英文

页码: 366-371

在线出版日期: 2019-01-11（万方平台首次上网日期，不代表论文的发表时间）