Fiber Fabry-Perot Interferometer for Measurement of Gas Pressure and Temperature

被引：70
作者：
Xu, B. [1 ]
Liu, Y. M. [1 ]
Wang, D. N. [1 ]
Li, J. Q. [2 ]
机构：
[1] China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Zhejiang, Peoples R China
[2] Macau Univ Sci & Technol, Fac Informat Technol, Taipa, Macau, Peoples R China
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2016年 / 34卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Fabry-Perot interferometer; optical fiber sensors; pressure and temperature measurement; PHOTONIC CRYSTAL FIBER; MACH-ZEHNDER INTERFEROMETER; FEMTOSECOND-LASER; SENSOR; SENSITIVITY; DIAPHRAGM; AIR; CAVITY;
D O I：
10.1109/JLT.2016.2598573
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A fiber Fabry-Perot interferometer (FPI) is proposed and demonstrated for the measurement of gas pressure and temperature. The interferometer is fabricated by fusion splicing a short segment of capillary tube to a standard single mode fiber (SMF), followed by inserting a glass microsphere into the tube, the air gap between the SMF end face and the glass microsphere then forms a fiber FPI. Due to the additional reflection occurred on the rear surfaces of the microsphere, the reflection spectrum of the device is a three-beam interference pattern. Owing to the dependence of refractive index of gas on the pressure applied and the thermal-optical effect of glass microsphere, different dips in the interference fringe pattern exhibit different responses to the changes in gas pressure and temperature, which enables a simultaneous gas pressure and temperature sensing. The proposed device has the advantages of compact size, robust structure, easy fabrication, high gas pressure sensitivity, and supporting of range tunable operation.
引用
收藏
页码：4920 / 4925
页数：6
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