A tunable fiber-optic Fabry-Perot cavity formed between a silica microsphere and a target

被引：18

作者：

Cai, Lu ^{[1
]}

Wang, Jin ^{[1
]}

Pan, Junyao ^{[1
]}

Liu, Qiang ^{[1
]}

Chen, Yang ^{[1
]}

机构：

[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2020年 / 459卷

基金：

中国国家自然科学基金;

关键词：

Fabry-Perot cavity; Optical fiber sensor; Interference; Displacement measurement; PHOTONIC CRYSTAL FIBER; TEMPERATURE; SENSOR; DISPLACEMENT; INTERFEROMETER; SENSITIVITY; BEND;

D O I：

10.1016/j.optcom.2019.124996

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, a tunable fiber-optic Fabry-Perot (FP) cavity is proposed and demonstrated experimentally. The microsphere formed by melting the end of a single mode fiber(SMF) is used as one of the reflective surfaces of the FP cavity. Compared with the interference in FP cavities formed by a pair of parallel interfaces, the FP interference generated between a convex surface and a perpendicular plane can result in a higher fringe contrast when the length of the cavity is much larger. Utilizing this characteristic, a large-scale displacement response up to 3.3 mm can be achieved with the highest sensitivity of 37 pm/mu m. This method has the advantages of low cost, a simple fabrication process and high tolerance to the reflectivity of the measured object.

引用

页数：5

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