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Efficient Unidirectional Optical Coupling for Hybird Plasmonic Waveguide

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Abstract

A new type of efficient and unidirectional optical coupler composed of periodic nanoslits is proposed for hybrid plasmonic waveguide. The operation principle and performance were analyzed and discussed. The coupling efficiency more than 50%, extinction ratio better than 18dB with incidence angle θ=12° was achieved at λ= 1550nm.

© 2013 Optical Society of America

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