Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4345
Title: Temperature-insensitive strain sensor with polarization-maintaining photonic crystal fibre based Sagnac Interferometer
Authors: Dong, X
Tam, HY 
Shum, P
Issue Date: 9-Apr-2007
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.
Keywords: Strain sensors
Fibre optic sensors
Photonic crystals
Optical fibre polarisation
Sagnac interferometers
Spectral line shift
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.2722058
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 http://apl.aip.org/resource/1/applab/v90/i15/p151113_s1
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