Novel fiber loop mirror pressure sensor using a LPG as demodulation device

Yong Zhao; Hongke Wu; Qi Wang

doi:10.1117/12.885575

18 May 2011 Novel fiber loop mirror pressure sensor using a LPG as demodulation device

Yong Zhao, Hongke Wu, Qi Wang

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77539D (2011) https://doi.org/10.1117/12.885575
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

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.

Citation Download Citation

Yong Zhao, Hongke Wu, and Qi Wang "Novel fiber loop mirror pressure sensor using a LPG as demodulation device", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539D (18 May 2011); https://doi.org/10.1117/12.885575

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