Gas Refractometer Based on Optical Fiber Extrinsic Fabry-Perot Interferometer With Open Cavity

被引：46
|
作者：
Wang, Ruohui [1 ]
Qiao, Xueguang [1 ]
机构：
[1] Northwest Univ, Sch Phys, Xian 710069, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2015年 / 27卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Optical fiber devices; Fabry-Perot interferometers; refractive index measurement; PHOTONIC CRYSTAL FIBER; REFRACTIVE-INDEX;
D O I：
10.1109/LPT.2014.2365812
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：
In this letter, we proposed a gas refractometer based on optical fiber Fabry-Perot interferometer with an open cavity. The Fabry-Perot cavity is a short section capillary tube spliced between a single-mode fiber and a side-hole fiber (SHF). The unique cladding of the SHF enables gas entering or leaving the Fabry-Perot cavity freely. The measurement of pressure-induced refractive index change of nitrogen gas has been demonstrated by monitoring the wavelength shift of the interference pattern. The robust and microsize architecture make the interferometer a good candidate for gas sensing applications.
引用
收藏
页码：245 / 248
页数：4
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