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Proceedings Paper

Novel fiber loop mirror pressure sensor using a LPG as demodulation device
Author(s): Yong Zhao; Hongke Wu; Qi Wang
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Paper Abstract

In order to cut short the size of fiber loop mirror (FLM) sensor and eliminate the environmental temperature influence on it, polarization-maintaining photonic crystal fiber (PM-PCF) is used in the sensor structure and introduced in this paper. Mathematical model of external pressure and birefringence is established and shifts of FLM transmission spectrum with different pressures are simulated. The long period fiber gating (LPG) acts as a linear optical wavelength filter which transformed wavelength shifts to optical power, thus sensitivity of system was improved due to the demodulation result of difference of two adjacent peaks of transmission.

Paper Details

Date Published: 18 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539D (18 May 2011); doi: 10.1117/12.885575
Show Author Affiliations
Yong Zhao, Northeastern Univ. (China)
Hongke Wu, Northeastern Univ. (China)
Qi Wang, Northeastern Univ. (China)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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