Chen Ying, Yao Jin, Song Zhengyong, Ye Longfang, Cai Guoxiong, Liu Qing Huo
Opt Express. 2016 Jul 25;24(15):16961-72. doi: 10.1364/OE.24.016961.
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.
在一种由两个背靠背放置的石墨烯场效应晶体管组成的独立悬空石墨烯-间隔层-光栅-间隔层-石墨烯（GSGSG）混合平板中，实现了双等离子体波的独立激发和调谐。由于石墨烯具有高透明度和表面等离子体模式的紧密限制，双等离子体波可以通过导模共振（GMR）独立激发。在中红外波段进行了理论和数值研究。此外，还研究了各个GMR共振波长相对于系统参数的调谐。这些结果为设计用于波长选择和复用应用的拟议混合平板提供了机会。
