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Tunable band-pass plasmonic waveguide filters with nanodisk resonators

Lu, Hua, Liu, Xueming, Mao, Dong, Wang, Leiran and Gong, Yongkang 2010. Tunable band-pass plasmonic waveguide filters with nanodisk resonators. Optics Express 18 (17) , pp. 17922-17927. 10.1364/OE.18.017922

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Abstract

A novel and simple plasmonic filter based on metal-insulator-metal plasmonic waveguides with a nanodisk resonator is proposed and investigated numerically. By the resonant theory of disk-shaped nanocavity, we find that the resonance wavelengths can be easily manipulated by adjusting the radius and refractive index of the nanocavity, which is in good agreement with the results obtained by finite-difference time-domain (FDTD) simulations. In addition, the bandwidths of resonance spectra are tunable by changing the coupling distance between the nanocavity and waveguides. This result achieved by FDTD simulations can be accurately analyzed by temporal coupled mode theory. Our filters have important potential applications in high-density plasmonic integration circuits.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Optical Society of America
ISSN: 1094-4087
Date of Acceptance: 26 July 2010
Last Modified: 22 Mar 2019 16:00
URI: http://orca.cf.ac.uk/id/eprint/119624

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