UV-induced intrinsic Fabry-Perot interferometric fiber sensors

被引：18

作者：

Shen, F ^{[1
]}

Peng, W ^{[1
]}

Cooper, K ^{[1
]}

Pickrell, G ^{[1
]}

Wang, AB ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Ctr Photon Technol, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA

来源：

SENSORS FOR HARSH ENVIRONMENTS | 2004年 / 5590卷

关键词：

fiber sensors; UV irradiation; intrinsic Fabry-Perot interferometer; temperature; strain; pressure;

D O I：

10.1117/12.577306

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In this paper, we present a novel point-wise laser writing method that utilizes a focused ultraviolet (UV) laser beam and metallic masks to write local Fresnel reflectors and intrinsic Fabry-Perot interferometric (IFPI) sensors in photosensitive fibers. These UV-induced IFPI sensors have features of low reflectance and low power loss and have the potential to be densely multiplexed. We also present a sweeping laser based measurement system that measures the interference spectra and estimates the optical path distances (OPD) of IFPI sensors. We also demonstrated IFPI sensors for temperature, strain and pressure measurement. Laboratory test results show that these UV-induced IFPI sensors can have a resolution of 0.1degreesC for temperature measurement and 0.5 micro-strain for strain measurement, and can be used in a temperature environment as high as 600degreesC.

引用

页码：47 / 56

页数：10

共 8 条

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[2]

GREENE JA, 1994, LAS EL OPT SOC ANN M, V2, P157

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