Independent tuning of double plasmonic waves in a free-standing graphene-spacer-grating-spacer-graphene hybrid slab

Ying Chen, Jin Yao, Zhengyong Song, Longfang Ye, Guoxiong Cai, Qing Huo Liu

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

34 Citations (Scopus)

Abstract

The independent excitation and tuning of double plasmonic waves are realized in a free-standing graphene-spacer-grating-spacer-graphene (GSGSG) hybrid slab, which consists of two graphene field effect transistors placed back-to-back to each other. Resulted from the high transparency and the tight confinement of surface plasmonic mode for the graphene, double plasmonic waves can be independently excited by guided-mode resonances (GMRs). Theoretical and numerical investigations are performed in the mid-infrared band. Furthermore, the tuning of individual GMR resonant wavelengths with respect to the system parameters is studied. The results provide opportunities to engineer the proposed hybrid slab for wavelength selective and multiplexing applications. © 2016 Optical Society of America.
Original languageEnglish
Pages (from-to)16961-16972
JournalOptics Express
Volume24
Issue number15
DOIs
Publication statusPublished - 25 Jul 2016
Externally publishedYes

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