Journal
APPLIED OPTICS
Volume 47, Issue 15, Pages 2835-2839Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.47.002835
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A novel intrinsic fiber optic pressure sensor realized with a polarization-maintaining photonic crystal fiber (PM-PCF) based Sagnac interferometer is proposed and demonstrated experimentally. A large wavelength-pressure coefficient of 3.42 nm/MPa was measured using a 58.4 cm long PM-PCF as the sensing element. Owing to the inherently low bending loss and thermal dependence of the PM-PCF, the proposed pressure sensor is very compact and exhibits low temperature sensitivity. (c) 2008 Optical Society of America.
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