Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11931
Title: A highly sensitive and low-cost sagnac loop based pressure sensor
Authors: Cho, LH
Wu, C
Lu, C 
Tam, HY 
Keywords: Fiber optics
Pressure measurement
Sagnac interferometers
Issue Date: 2013
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE Sensors Journal, 2013, v. 13, no. 8, 6512573, p. 3073-3078 How to cite?
Journal: IEEE sensors journal 
Abstract: A pressure sensor based on Sagnac loop using polarization-maintaining photonic crystal fiber operating at 850 nm with much extended measuring range is experimentally demonstrated. We propose a frequency and phase detection technique to enable much extended measurement range comparing with previously proposed schemes. The scheme gives a linear relationship between phase and pressure variation. Experimental results agree well with theoretical predications. The study also shows that operating at 850 nm improves pressure sensitivity by about three times compared with sensors operating at 1550 nm. It enables the use of low-cost and high-speed charge-coupled device interrogator for measurement.
URI: http://hdl.handle.net/10397/11931
ISSN: 1530-437X
DOI: 10.1109/JSEN.2013.2261291
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