Journal
IEEE TRANSACTIONS ON NANOTECHNOLOGY
Volume 12, Issue 6, Pages 1185-1190Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNANO.2013.2284833
Keywords
Integrated optics devices; metal-insulator-metal (MIM) waveguide; multiplexing; optical resonators; wavelength filtering
Categories
Funding
- State Key Laboratory of Advanced Optical Communication Systems and Networks
- Open Foundation of State Key Laboratory of Optical Communication Technologies and Networks (Wuhan Research Institute of Posts and Telecommunications)
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We propose and numerically investigate a plasmonic triple-wavelength demultiplexing structure based on metal-insulator-metal waveguides with side-coupled nanodisk cavities. The structure consists of three output channels, each of which is sandwiched by two nanodisk cavities and functions as a dual stop-band filter. The operation principle and transmission characteristics are analyzed by using the temporal coupled-mode theory and the finite-difference time-domain method. Simulation results show that the demultiplexed wavelength of each channel can be effectively tuned by adjusting the geometrical parameters of the structure. The proposed structure will find potential applications in photonic-integrated circuits and ultracompact optical communication systems.
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