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Waveguide zeeman interferometry for thinfilm chemical sensors

  • K. Grace
  • , K. Shrouf
  • , Seppo Honkanen*
  • , Pekka Äyräs
  • , Pekka Katila
  • , Matti Leppihalme
  • , R. Johnson
  • , X. Yang
  • , B. Swanson
  • , Nasser Peyghambarian
  • *Corresponding author for this work
  • Los Alamos National Laboratory
  • University of Arizona
  • VTT (former employee or external)

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The authors demonstrate a highly sensitive chemical sensor scheme based on Si/sub 3/N/sub 4/ channel waveguides, species-selective surface coatings and Zeeman interferometry. The relative phase change between the TE and TM modes under exposure to toluene vapour is measured. The measurements demonstrate the real-time and reversible response with good sensitivity at low concentrations.
Original languageEnglish
Pages (from-to)1651-1653
JournalElectronics Letters
Volume33
Issue number19
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

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