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Experimental demonstration of a ferroelectric liquid crystal tunable filter for fast demodulation of FBG sensors

Conference Paper


Abstract


  • A discretely tunable Surface-Stabilized Ferroelectric Liquid Crystal based Lyot Filter, with tuning speeds in the order of microseconds, is demonstrated experimentally as a channel dropper for the demodulation of multiple Fibre Bragg Grating sensors. The 3-stage Lyot Filter designed and experimentally verified can be used together with the high-speed ratiometric wavelength measurement system employing a fibre bend loss edge filter. Such systems can be used for the demodulation of distributed Fibre Bragg Grating sensors employed in applications such as structural monitoring, industrial sensing and haptic telerobotic surgical systems. © 2009 SPIE.

Publication Date


  • 2009

Citation


  • Mathews, S., Semenova, Y., Rajan, G., & Farrell, G. (2009). Experimental demonstration of a ferroelectric liquid crystal tunable filter for fast demodulation of FBG sensors. In Proceedings of SPIE - The International Society for Optical Engineering Vol. 7356. doi:10.1117/12.820629

Scopus Eid


  • 2-s2.0-70350057751

Volume


  • 7356

Abstract


  • A discretely tunable Surface-Stabilized Ferroelectric Liquid Crystal based Lyot Filter, with tuning speeds in the order of microseconds, is demonstrated experimentally as a channel dropper for the demodulation of multiple Fibre Bragg Grating sensors. The 3-stage Lyot Filter designed and experimentally verified can be used together with the high-speed ratiometric wavelength measurement system employing a fibre bend loss edge filter. Such systems can be used for the demodulation of distributed Fibre Bragg Grating sensors employed in applications such as structural monitoring, industrial sensing and haptic telerobotic surgical systems. © 2009 SPIE.

Publication Date


  • 2009

Citation


  • Mathews, S., Semenova, Y., Rajan, G., & Farrell, G. (2009). Experimental demonstration of a ferroelectric liquid crystal tunable filter for fast demodulation of FBG sensors. In Proceedings of SPIE - The International Society for Optical Engineering Vol. 7356. doi:10.1117/12.820629

Scopus Eid


  • 2-s2.0-70350057751

Volume


  • 7356