Exploitation of multilayer coatings for infrared surface plasmon resonance fiber sensors

Thomas D.P. Allsop, Ron Neal, Chengbo Mou, Peter Brown, Sayah O. Saied, Saeed Rehman, Kyriacos Kalli, David J. Webb, John L. Sullivan, Des J. Mapps, Ian Bennion

Research output: Contribution to journalArticle

Abstract

We demonstrate surface plasmon resonance (SPR) fiber devices based upon ultraviolet inscription of a grating-type structure into both single-layered and multilayered thin films deposited on the flat side of a lapped D-shaped fiber. The single-layered devices were fabricated from germanium, while the multilayered ones comprised layers of germanium, silica, and silver. Some of the devices operated in air with high coupling efficiency in excess of 40 dB and an estimated index sensitivity of Delta lambda/Delta n = 90 mn from 1 to 1.15 index range, while others provided an index sensitivity of Delta lambda/Delta n = 6790 mn for refractive indices from 1.33 to 1.37. (C) 2009 Optical Society of America
Original languageEnglish
Pages (from-to)276-286
Number of pages11
JournalApplied Optics
Volume48
Issue number2
DOIs
Publication statusPublished - 10 Jan 2009

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Bibliographical note

© 2009 Optical Society of America

Keywords

  • surface plasmon resonance
  • SPR
  • fiber devices
  • ultraviolet inscription
  • grating-type structure
  • single-layered thin films
  • multilayered thin films
  • flat side
  • lapped D-shaped fiber
  • germanium
  • silica
  • silver
  • high coupling efficiency
  • index sensitivity
  • refractive index

Cite this

Allsop, T. D. P., Neal, R., Mou, C., Brown, P., Saied, S. O., Rehman, S., ... Bennion, I. (2009). Exploitation of multilayer coatings for infrared surface plasmon resonance fiber sensors. Applied Optics, 48(2), 276-286. https://doi.org/10.1364/AO.48.000276