Ultra-sensitive long-range surface plasmon modes in asymmetric double-electrode waveguide

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...

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書目詳細資料
Main Authors: Zhou, Yanyan, Luan, Feng, Yu, Xia, Zhang, Ying
其他作者: School of Electrical and Electronic Engineering
格式: Conference or Workshop Item
語言:English
出版: 2013
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在線閱讀:https://hdl.handle.net/10356/95964
http://hdl.handle.net/10220/10068
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機構: Nanyang Technological University
語言: English
實物特徵
總結: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.