Temperature and strain discrimination based on a temperature-insensitive birefringent interferometer incorporating an erbium-doped fiber

Title
Temperature and strain discrimination based on a temperature-insensitive birefringent interferometer incorporating an erbium-doped fiber
Authors
한영근정영주이상배김창석정명영김문기
Keywords
tempature sensor; strain sensor; erbium doped fiber; Polarization maintaining
Issue Date
2009-04
Publisher
Applied optics
Citation
VOL 48, NO 12, 2303-2307
Abstract
A simple configuration for simultaneous measurement of temperature and strain exploiting a temperature- insensitive birefringent interferometer based on a photonic crystal fiber incorporating an erbiumdoped fiber (EDF) is investigated. The transmission peak power of the birefringent interferometer incorporating the EDF is changed by the temperature variation because the amplified spontaneous emission of the EDF strongly depends on temperature. The applied strain changes the peak wavelength of the birefringent interferometer connecting with the EDF, which can make it possible to discriminate concurrent sensitivities like temperature and strain. The temperature and strain sensitivities were −0:04 dB=°C and 1:3pm=με, respectively.
URI
http://pubs.kist.re.kr/handle/201004/35102
ISSN
0003-6935
Appears in Collections:
KIST Publication > Article
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