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Analysis of nanoplasmonic wavelength demultiplexing based on metal-insulator-metal waveguides

Lu, Hua, Liu, Xueming, Gong, Yongkang, Mao, Dong and Wang, Guoxi 2011. Analysis of nanoplasmonic wavelength demultiplexing based on metal-insulator-metal waveguides. Journal of the Optical Society of America B 28 (7) , pp. 1616-1621. 10.1364/JOSAB.28.001616

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Nanoplasmonic wavelength demultiplexing (WDM) structures based on metal-insulator-metal waveguides are designed and investigated numerically. The WDM structures possess a series of resonator-based channel drop filters near a bus waveguide. The demultiplexing wavelength of each channel can be tuned by adjusting the geometrical parameters and refractive index of the resonator. The numerical results based on the finite-difference time-domain method can be accurately explained by the resonant theory. Meanwhile, the transmission characteristics of the drop waveguide are influenced by the coupling distance between the resonator and drop/bus waveguides, which can be exactly analyzed by the temporal coupled-mode theory. Additionally, it is found that the drop efficiencies can be improved by a factor of more than 1.8 when a reflection feedback is introduced in the bus waveguide

Item Type: Article
Status: Published
Schools: Physics and Astronomy
Publisher: Optical Society of America
ISSN: 0740-3224
Last Modified: 22 Feb 2019 16:00

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