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

被引：47

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

页码：245 / 248

页数：4

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