Characterization of infrared surface plasmon resonances generated from a fiber-optical sensor utilizing tilted Bragg gratings

Thomas D.P. Allsop, Ron Neal, Saeed Rehman, David J. Webb, Des J. Mapps, Ian Bennion

Research output: Contribution to journalArticle

Abstract

We demonstrate the use of tilted fiber gratings to assist with the generation of infrared surface plasmons on a metal film coating the flat of a D-shaped fiber. The wavelength of the strong (>25 dB) resonance is tunable over similar to 1000 nm by adjusting the polarization state of the light and is highly sensitive to the refractive index of any aqueous medium surrounding the fiber (sensitivity= 3365 nm).
Original languageEnglish
Pages (from-to)481-490
Number of pages10
JournalJournal of the Optical Society of America B
Volume25
Issue number4
DOIs
Publication statusPublished - 1 Apr 2008

Bibliographical note

© 2008 Optical Society of America

Keywords

  • tilted fiber gratings
  • generation
  • infrared surface plasmons
  • metal film coating
  • flat
  • D-shaped fiber
  • wavelength
  • strong resonance
  • refractive index
  • aqueous medium

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