Discretely tunable ferroelectric liquid crystal filter for demodulation of multiple FBG sensors

Sunish Mathews; Yuliya Semenova; Ginu Rajan; Gerald Farrell

doi:10.1117/12.781209

28 April 2008 Discretely tunable ferroelectric liquid crystal filter for demodulation of multiple FBG sensors

Sunish Mathews, Yuliya Semenova, Ginu Rajan, Gerald Farrell

Proceedings Volume 7003, Optical Sensors 2008; 70031X (2008) https://doi.org/10.1117/12.781209
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

A ratiometric wavelength measurement system based on a fiber bend loss edge filter has been proposed and demonstrated previously. Such a system offers the advantage of a high resolution, simplicity and a high measurement speed. The applications of such a system for the demodulation of the outputs of multiple Fiber Bragg grating (FBG) sensors requires the use of a high speed tunable filter to separate responses from multiple sensors. Here we present the results of modelling and analysis for a discretely tunable ferroelectric liquid crystal filter, which could be used as a channel dropper in a WDM-based demodulation system containing multiple FBG sensors.

Citation Download Citation

Sunish Mathews, Yuliya Semenova, Ginu Rajan, and Gerald Farrell "Discretely tunable ferroelectric liquid crystal filter for demodulation of multiple FBG sensors", Proc. SPIE 7003, Optical Sensors 2008, 70031X (28 April 2008); https://doi.org/10.1117/12.781209

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