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Title: Temperature-insensitive strain sensor with polarization-maintaining photonic crystal fibre based Sagnac Interferometer
Authors: Dong, Xinyong
Tam, Hwa-yaw
Shum, Ping
Subjects: Strain sensors
Fibre optic sensors
Photonic crystals
Optical fibre polarisation
Sagnac interferometers
Spectral line shift
Issue Date: 9-Apr-2007
Publisher: American Institute of Physics
Source: Applied physics letters, 9 Apr. 2007, v. 90, no. 15, 151113, p. 1-3
Abstract: A fiber-optic strain sensor is demonstrated by using a short length of polarization-maintaining photonic crystal fiber (PM-PCF) as the sensing element inserted in a Sagnac loop interferometer. Spectrum shift in response of strain with a sensitivity of 0.23 pm/με is achieved, and the measurement range, by stretching the PM-PCF only, is up to 32 mε. Due to the ultralow thermal sensitivity of the PM-PCF, the proposed strain sensor is inherently insensitive to temperature, eliminating the requirement for temperature compensation.
Rights: © 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in X. Dong, H. Y. Tam & P. Shum, Appl. Phys. Lett. 90, 151113 (2007) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.2722058
ISSN: 0003-6951 (print)
1077-3118 (online)
Appears in Collections:EE Journal/Magazine Articles

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