http://orcid.org/0000-0003-0829-4886
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ABSTRACT
A plasmonic square ring resonator sensor design based on metal–insulator-metal waveguide is proposed. The transmission spectra and electric field distribution of the resonator are simulated using the finite element method (FEM). The numerical simulation results achieved from the transmission spectra are used to investigate the sensing characteristics of the structure. The effect of structural parameters on the spectral characteristics and sensing performance are investigated in detail. The sensitivity is obtained to a value as high as 1367 nm/RIU with a figure of merit of ∼25. The suggested design can possibly be applied in optical network-on-chip and on-chip nanosensors.
Acknowledgement
This work was financially supported by the Russian Foundation for Basic Research (grant number 16-29-09528_ofi_m) for numerical calculations, by the Ministry of Science and Higher Education within the State assignment FSRC «Crystallography and Photonics» RAS (No. 007-GZ/Ch3363/26) for theoretical results, and ‘A next-generation worldwide quantum sensor network with optical atomic clocks’ project is carried out within the TEAM IV Programme of the Foundation for Polish Science co-financed by the European Union under the European Regional Development Fund.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
M. A. Butt http://orcid.org/0000-0003-0829-4886
S. N. Khonina http://orcid.org/0000-0001-6765-4373
N. L. Kazanskiy http://orcid.org/0000-0002-0180-7522