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

Philip Orr, Pawel Niewczas

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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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.
Original languageEnglish
Title of host publicationSPIE Proceedings Vol. 8421
Subtitle of host publicationOFS2012 22nd International Conference on Optical Fiber Sensors
EditorsYanbiao Liao, Hoilut Ho, Wei Jin, David D. Sampson, Ryozo Yamauchi, Youngjoo Chung, Kentaro Nakamura, Yunjiang Rao
Number of pages4
DOIs
Publication statusPublished - 4 Oct 2012
Event22nd International Conference on Optical Fiber Sensors - Beijing, China
Duration: 15 Oct 201219 Oct 2012

Conference

Conference22nd International Conference on Optical Fiber Sensors
CountryChina
CityBeijing
Period15/10/1219/10/12

Keywords

  • multiplexable sensors
  • electric fields
  • Bragg gratings

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