Unidirectional optical coupling for plasmonic waveguide based on metallic-dielectric high-contrast gratings

Fan Lu; Kun Li; Zhonghua Wang; Zhijun He; Dalin Liu; Anshi Xu

doi:10.1117/12.2044880

19 February 2014 Unidirectional optical coupling for plasmonic waveguide based on metallic-dielectric high-contrast gratings

Fan Lu, Kun Li, Zhonghua Wang, Zhijun He, Dalin Liu, Anshi Xu

Author Affiliations +

Proceedings Volume 8995, High Contrast Metastructures III; 899516 (2014) https://doi.org/10.1117/12.2044880
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

Based on the metallic-dielectric high contrast gratings, we proposed two new different schemes to achieve the unidirectional coupling of incident free-space light into the plasmonic waveguides. Using the cascaded metal-air subgratings (structure 1) or metallic-dielectric subwavelength periodic gratings (structure 2), the ultra-broadband and wideangular SPPs excitation could be both achieved. The operation principle and performance of the structures are analyzed and discussed, respectively.

Citation Download Citation

Fan Lu, Kun Li, Zhonghua Wang, Zhijun He, Dalin Liu, and Anshi Xu "Unidirectional optical coupling for plasmonic waveguide based on metallic-dielectric high-contrast gratings", Proc. SPIE 8995, High Contrast Metastructures III, 899516 (19 February 2014); https://doi.org/10.1117/12.2044880

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