Intrinsic, multiplexable sensors for electric field strength using structural slow light in phase-shifted fibre Bragg gratings

Philip Orr; Paweł Niewczas

doi:10.1117/12.939472

17 October 2012 Intrinsic, multiplexable sensors for electric field strength using structural slow light in phase-shifted fibre Bragg gratings

Philip Orr, Paweł Niewczas

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84212J (2012) https://doi.org/10.1117/12.939472
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

In this paper we demonstrate through simulation the potential for phase-shifted fibre Bragg gratings incorporating structural slow light to enable intrinsic reflection-mode point sensors for electric field or voltage. It is shown that lo-bi FBGs incorporating multiple phase shifts yield large enhancements in group index (group delay) at resonance, thus amplifying and localizing time-dependent non-reciprocal effects. A relative, multiplexable measurement of electric field by comparison of the phase unbalance between linear modes on and off resonance is proposed, yielding static resolutions of 24 V and 18 mV respectively in unpoled (dc Kerr effect) and poled (Pockels effect) fibres.

Citation Download Citation

Philip Orr and Paweł Niewczas "Intrinsic, multiplexable sensors for electric field strength using structural slow light in phase-shifted fibre Bragg gratings", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84212J (17 October 2012); https://doi.org/10.1117/12.939472

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