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Proceedings Paper

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

Paper Details

Date Published: 28 April 2008
PDF: 8 pages
Proc. SPIE 7003, Optical Sensors 2008, 70031X (28 April 2008); doi: 10.1117/12.781209
Show Author Affiliations
Sunish Mathews, Dublin Institute of Technology (Ireland)
Yuliya Semenova, Dublin Institute of Technology (Ireland)
Ginu Rajan, Dublin Institute of Technology (Ireland)
Gerald Farrell, Dublin Institute of Technology (Ireland)


Published in SPIE Proceedings Vol. 7003:
Optical Sensors 2008
Francis Berghmans; Anna Grazia Mignani; Antonello Cutolo; Patrick P. Meyrueis; Thomas P. Pearsall, Editor(s)

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