Enhancement of transmission efficiency of nanoplasmonic wavelength demultiplexer based on channel drop filters and reflection nanocavities

We propose and numerically investigate a novel kind of nanoscale plasmonic wavelength demultiplexing (WDM) structure based on channel drop filters in metal-insulator-metal waveguide with reflection nanocavities. By using finite-difference time-domain simulations, it is found that the transmission ef...

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Bibliographic Details
Published in:Optics express 2011-07, Vol.19 (14), p.12885-12890
Main Authors: Lu, Hua, Liu, Xueming, Gong, Yongkang, Mao, Dong, Wang, Leiran
Format: Article
Language:English
Subjects:
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Filtration - instrumentation
Nanotechnology - instrumentation
Refractometry - instrumentation
Reproducibility of Results
Sensitivity and Specificity
Surface Plasmon Resonance - instrumentation
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Summary:We propose and numerically investigate a novel kind of nanoscale plasmonic wavelength demultiplexing (WDM) structure based on channel drop filters in metal-insulator-metal waveguide with reflection nanocavities. By using finite-difference time-domain simulations, it is found that the transmission efficiency of the channel drop filter can be significantly enhanced by selecting the proper distance between the drop and reflection cavities. The result can be exactly analyzed by the temporal coupled-mode theory. According to this principle, a nanoscale triple-wavelength demultiplexer with high drop efficiencies is designed. The proposed structure can find more applications for the ultra-compact WDM systems in highly integrated optical circuits.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.012885