Fiber loop ring-down optical fiber grating gas pressure sensor

Daqing Tang, Dexing Yang, Yajun Jiang, Jianlin Zhao, Haiyan Wang, Shiquan Jiang

科研成果: 期刊稿件文章同行评审

30 引用 (Scopus)

摘要

A kind of bare fiber Bragg grating (FBG) gas pressure sensor based on fiber loop ring-down is presented, in which there are no sensitizing means or assistant structure on the bare FBG. The pressure sensitivity is analyzed theoretically via discussing the relationship between the ring-down time and the gas pressure. By detecting the ring-down time at different gas pressure levels, the gas pressure characteristics of the bare FBG are investigated in the time domain. The experimental results demonstrate that there exists a linear dependence of the pressure applied to the bare FBG on the ring-down time. A high sensitivity of -0.384 μs/MPa (being equivalent to -240 pm/MPa) could be achieved, which is 79 times larger than that of the optical spectral analyzer interrogated. This kind of pressure sensor could be used for gas or liquid pressure measurement.

源语言英语
页(从-至)1262-1265
页数4
期刊Optics and Lasers in Engineering
48
12
DOI
出版状态已出版 - 12月 2010

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