Fiber-optic waveguide coupled surface plasmon resonance sensor

Jae Heon Ahn, Tae Yeon Seong, Won Mok Kim, Taek Sung Lee, Inho Kim, Kyeong Seok Lee

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62 Citations (Scopus)

Abstract

A novel approach to give an excellent tunability and selfreferencing capability was presented by applying a concept of waveguide coupled surface plasmon resonance mode to a fiber-optic sensor. The presence of dielectric waveguide sandwiched between two metal layers made it possible to precisely tune the resonance wavelength in a broad range from visible to infrared region and to generate multiple modes which may be selectively used for suitable applications. Our approach also verified the potential capability of self-referencing based on a remarkable difference in sensitivity between the plasmonic and waveguide modes excited by pand s-polarized lights, respectively, without using an additional reference channel. Experimental measurement carried out on sucrose solutions with varying concentration demonstrated the feasibility of our approach.

Original languageEnglish
Pages (from-to)21729-21738
Number of pages10
JournalOptics Express
Volume20
Issue number19
DOIs
Publication statusPublished - 2012 Sep 10

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Ahn, J. H., Seong, T. Y., Kim, W. M., Lee, T. S., Kim, I., & Lee, K. S. (2012). Fiber-optic waveguide coupled surface plasmon resonance sensor. Optics Express, 20(19), 21729-21738. https://doi.org/10.1364/OE.20.021729