Preprint Article Version 1 This version not peer reviewed

Plasmonic Refractive Index Sensor with High Figure of Merit Based on Concentric-Rings Resonator

Version 1 : Received: 11 November 2017 / Approved: 14 November 2017 / Online: 14 November 2017 (06:34:28 CET)

How to cite: Zhang, Z.; Yang, J.; He, X.; Zhang, J.; Huang, J.; Chen, D.; Han, Y. Plasmonic Refractive Index Sensor with High Figure of Merit Based on Concentric-Rings Resonator. Preprints 2017, 2017110088 (doi: 10.20944/preprints201711.0088.v1). Zhang, Z.; Yang, J.; He, X.; Zhang, J.; Huang, J.; Chen, D.; Han, Y. Plasmonic Refractive Index Sensor with High Figure of Merit Based on Concentric-Rings Resonator. Preprints 2017, 2017110088 (doi: 10.20944/preprints201711.0088.v1).

Abstract

A plasmonic refractive index (RI) sensor based on metal-insulator-metal (MIM) waveguide coupled with concentric double rings resonator (CDRR) is proposed and investigated numerically. Utilizing the novel supermodes of the CDRR, the FWHM of the resonant wavelength can be modulated, and a sensitivity of 1060 nm/RIU with high figure of merit (FOM) 203.8 is realized in the near-infrared region. The unordinary modes as well as the influence of structure parameters on the sensing performance are also discussed. Such plasmonic sensor with simple framework and high optical resolution could be applied to on-chip sensing systems and integrated optical circuits.

Subject Areas

plasmonic sensor; high figure of merit; concentric double rings resonator

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