Structures, mode property, and high frequency response of the present silicon-graphene hybrid plasmonic waveguide photodetector. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Structures, mode property, and high frequency response of the present silicon-graphene hybrid plasmonic waveguide photodetector.

Caption

a. Schematic configuration; b. Optical microscope; c. SEM pictures; d. Cross-section of the present silicon-graphene hybrid plasmonic waveguide with the signal electrode at the middle and the ground electrodes at both sides (here the metal-graphene-metal sandwich structure is utilized); e. The electric field component distribution of the quasi-TE0 mode for the optimized silicon-graphene hybrid plasmonic waveguide; f. Measured frequency response of Device B operating at ¦Ë=2μm (bias voltage: -0.5 V, gate voltage: 2.9 V).

Credit

Jingshu Guo, Jiang Li, Chaoyue Liu, Yanlong Yin, Wenhui Wang, Zhenhua Ni, Zhilei Fu, Hui Yu, Yang Xu, Yaocheng Shi, Yungui Ma, Shiming Gao, Liming Tong and Daoxin Dai

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