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Proceedings Paper

UV-induced intrinsic Fabry-Perot interferometric fiber sensors
Author(s): Fabin Shen; Wei Peng; Kristie L. Cooper; Gary Pickrell; Anbo Wang
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Paper Abstract

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 0.1°C for temperature measurement and 0.5 micro-strain for strain measurement, and can be used in a temperature environment as high as 600°C.

Paper Details

Date Published: 8 December 2004
PDF: 10 pages
Proc. SPIE 5590, Sensors for Harsh Environments, (8 December 2004); doi: 10.1117/12.577306
Show Author Affiliations
Fabin Shen, Virginia Polytechnic Institute and State Univ. (United States)
Wei Peng, Virginia Polytechnic Institute and State Univ. (United States)
Kristie L. Cooper, Virginia Polytechnic Institute and State Univ. (United States)
Gary Pickrell, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 5590:
Sensors for Harsh Environments
Anbo Wang, Editor(s)

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