High performance refractive index sensing in multimode plasmonic waveguide

Joonsoo Kim, Seung Yeol Lee, Hyeonsoo Park, Byoungho Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We propose a scheme to extend dynamic range of a Fabry-Perot (FP) resonator-based refractive index sensor while maintaining the sensitivity. We considered an intensiometric refractive index sensor using an FP resonator in a plasmonic waveguide which is formed by mode selective mirrors. Then, we demonstrated that the intensity degeneracy is a cause of small dynamic range. Lastly, we found that mode dependent transmission characteristics of the FP resonator and 180-degree phase shift across FP resonances can be exploited for extension of dynamic range.

Original languageEnglish
Title of host publicationFifth Asia-Pacific Optical Sensors Conference, APOS 2015
EditorsByoungho Lee, Yunjiang Rao, Sang Bae Lee
PublisherSPIE
ISBN (Electronic)9781628418651
DOIs
StatePublished - 2015
Event5th Asia-Pacific Optical Sensors Conference, APOS 2015 - Jeju, Korea, Republic of
Duration: 20 May 201522 May 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9655
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference5th Asia-Pacific Optical Sensors Conference, APOS 2015
Country/TerritoryKorea, Republic of
CityJeju
Period20/05/1522/05/15

Keywords

  • Fabry-Perot resonances
  • multimode waveguides
  • refractive index sensing
  • Surface plasmon polaritons

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