Nanoplasmonic triple-wavelength demultiplexers in two-dimensional metallic waveguides |
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| Authors: | H Lu X M Liu L R Wang D Mao Y K Gong |
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| Institution: | (1) School of Physical Science and Technology, Southwest University, Chongqing, 400715, People’s Republic of China;(2) School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu, 610054, People’s Republic of China |
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| Abstract: | A novel kind of plasmonic wavelength demultiplexers (WDMs) based on two-dimensional metal–insulator–metal waveguides with
side coupled nanocavities (SCNCs) is proposed and numerically investigated. The WDMs contain three waveguide output channels,
each of which functions as a dual-stopband plasmonic filter. The demultiplexing wavelengths can be tuned by controlling the
lengths and widths of SCNCs. The finite-difference time-domain results can be accurately analyzed by the resonant theory of
nanocavity. Our structures have important potential applications for design of WDM systems in highly integrated optical circuits. |
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