Multilayered coated infra-red surface plasmon resonance fibre sensors for aqueous chemical sensing

Thomas D.P. Allsop, Ron Neal, Chengbo Mou, P. Brown, Saeed Rehman, Kyriacos Kalli, David J. Webb, Des Mapps, Ian Bennion

Research output: Contribution to journalArticle

Abstract

A series of surface plasmonic fibre devices were fabricated by depositing multiple thin coatings on a lapped section of a standard single mode telecoms fibre forming a D-shaped section and then inscribing a grating-type structure using UV light. The coatings consisted of base coatings of semi-conductor (germanium) and dielectric (silicon dioxide) materials, followed by different metals. These fibre devices showed high spectral refractive index sensitivity with high coupling efficiency in excess of 40 dB for indices in the aqueous regime and below, with estimated index sensitivities of Lambda lambda/Lambda n = 90-800 nm from 1 to 1.15 index range and Lambda lambda/Lambda n = 1200-4000 nm for refractive indices from 1.33 to 1.39. (C) 2009 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)477-482
Number of pages6
JournalOptical Fiber Technology
Volume15
Issue number5-6
DOIs
Publication statusPublished - Oct 2009

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Keywords

  • surface plasmons resonances
  • fibre optic sensor
  • index sensing

Cite this

Allsop, T. D. P., Neal, R., Mou, C., Brown, P., Rehman, S., Kalli, K., Webb, D. J., Mapps, D., & Bennion, I. (2009). Multilayered coated infra-red surface plasmon resonance fibre sensors for aqueous chemical sensing. Optical Fiber Technology, 15(5-6), 477-482. https://doi.org/10.1016/j.yofte.2009.09.002