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Proceedings Paper

Ultra-sensitive long-range surface plasmon modes in asymmetric double-electrode waveguide
Author(s): Yanyan Zhou; Feng Luan; Xia Yu; Ying Zhang
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Paper Abstract

We present a theoretical study on an index-asymmetric double-electrode waveguide structure and identify a long-range surface plasmon polariton (LRSPP) super-mode for index-sensing. We propose to operate the LRSPP by monitoring its cut-off wavelength which promises ultra-sensitivity. The sensitivity is calculated to be 6.5×104 nm per refractive index unit (RIU), which is one order magnitude higher than most plasmonic sensors based on spectral interrogation. Additionally, based on computations from the transfer matrix theory, we present the properties of this LRSPP supermode.

Paper Details

Date Published: 28 February 2012
PDF: 6 pages
Proc. SPIE 8255, Physics and Simulation of Optoelectronic Devices XX, 82550S (28 February 2012); doi: 10.1117/12.907166
Show Author Affiliations
Yanyan Zhou, A*STAR Singapore Institute of Manufacturing Technology (Singapore)
Nanyang Technological Univ. (Singapore)
Feng Luan, Nanyang Technological Univ. (Singapore)
Xia Yu, A*STAR Singapore Institute of Manufacturing Technology (Singapore)
Ying Zhang, A*STAR Singapore Institute of Manufacturing Technology (Singapore)


Published in SPIE Proceedings Vol. 8255:
Physics and Simulation of Optoelectronic Devices XX
Bernd Witzigmann; Marek Osinski; Fritz Henneberger; Yasuhiko Arakawa, Editor(s)

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