High spatial resolution fiber-optic Fizeau interferometric strain sensor based on an in-fiber spherical microcavity

被引：54

作者：

Li, Enbang ^{[1
]}

Peng, Gang-Ding ^{[2
]}

Ding, Xin ^{[1
]}

机构：

[1] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China

[2] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 10期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2895637

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a fiber-optic Fizeau interferometric strain sensor consisting of an in-fiber spherical microcavity of 39 mu m in diameter. The spherical microcavity was formed by splicing a normal single-mode fiber with a hollow-core photonic crystal fiber. We demonstrate that strain sensing can be realized by using the interference between the light signals reflected by the front and rear surfaces of the sphere. Experiments have shown that the strain sensor has a strain sensitivity of 3.36 pm/mu epsilon and a temperature sensitivity of 1.35 pm/degrees C. (C) 2008 American Institute of Physics.

引用

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