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

Yanyan Zhou; Feng Luan; Xia Yu; Ying Zhang

doi:10.1117/12.907166

28 February 2012 Ultra-sensitive long-range surface plasmon modes in asymmetric double-electrode waveguide

Yanyan Zhou, Feng Luan, Xia Yu, Ying Zhang

Proceedings Volume 8255, Physics and Simulation of Optoelectronic Devices XX; 82550S (2012) https://doi.org/10.1117/12.907166
Event: SPIE OPTO, 2012, San Francisco, California, United States

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.

Citation Download Citation

Yanyan Zhou, Feng Luan, Xia Yu, and Ying Zhang "Ultra-sensitive long-range surface plasmon modes in asymmetric double-electrode waveguide", Proc. SPIE 8255, Physics and Simulation of Optoelectronic Devices XX, 82550S (28 February 2012); https://doi.org/10.1117/12.907166

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