Fano resonance based on a subwavelength semi-annular-rectangular cavity resonator

Yihong Fang; Kunhua Wen; Li Chen; Jinyun Zhou; Miao He

doi:10.1117/12.2504787

24 January 2019 Fano resonance based on a subwavelength semi-annular-rectangular cavity resonator

Yihong Fang, Kunhua Wen, Li Chen, Jinyun Zhou, Miao He

Proceedings Volume 10840, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics; 1084002 (2019) https://doi.org/10.1117/12.2504787
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China

Abstract

A semi-annular-rectangular cavity based on metal-insulator-metal (MIM) waveguide is proposed. The results show that there are obvious asymmetric transmission peaks in the transmission spectrum due to Fano resonances. The sharp transmission peak with a transmittance of ~ 0.75 occurs at the wavelength of ~1174.99nm . Then a steep dip arises at its right side, and the transmittance is almost 0 at ~1239.22nm . In addition, high sensitivity and figure of merit are also investigated. The performances of the proposed structure are demonstrated by using FDTD method.

Citation Download Citation

Yihong Fang, Kunhua Wen, Li Chen, Jinyun Zhou, and Miao He "Fano resonance based on a subwavelength semi-annular-rectangular cavity resonator", Proc. SPIE 10840, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Micro- and Nano-Optics, Catenary Optics, and Subwavelength Electromagnetics, 1084002 (24 January 2019); https://doi.org/10.1117/12.2504787

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KEYWORDS

Waveguides

Refractive index

Transmittance

Finite-difference time-domain method

Cavity resonators

Plasmonics

Phase shifts

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