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

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)


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
Issue number19
Publication statusPublished - 2012 Sept 10

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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