High-efficiency and broadband four-wave mixing in a silicon-graphene strip waveguide with a windowed silica top layer

Yuxing Yang; Zhenzhen Xu; Xinhong Jiang; Yu He; Xuhan Guo; Yong Zhang; Ciyuan Qiu; Yikai Su

doi:10.1364/PRJ.6.000965

Journals >Photonics Research >Volume 6 >Issue 10 >Page 965 > Article

Photonics Research
Vol. 6, Issue 10, 965 (2018)

High-efficiency and broadband four-wave mixing in a silicon-graphene strip waveguide with a windowed silica top layer

Yuxing Yang, Zhenzhen Xu, Xinhong Jiang, Yu He, Xuhan Guo, Yong Zhang, Ciyuan Qiu, and Yikai Su^*

Author Affiliations

State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

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DOI: 10.1364/PRJ.6.000965 Cite this Article Set citation alerts

Yuxing Yang, Zhenzhen Xu, Xinhong Jiang, Yu He, Xuhan Guo, Yong Zhang, Ciyuan Qiu, Yikai Su. High-efficiency and broadband four-wave mixing in a silicon-graphene strip waveguide with a windowed silica top layer[J]. Photonics Research, 2018, 6(10): 965 Copy Citation Text

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Abstract

We experimentally demonstrate high-efficiency and broadband four-wave mixing in a silicon-graphene strip waveguide. A four-wave mixing conversion efficiency of

38.7 dB

and a 3-dB conversion bandwidth of 35 nm are achieved in the silicon-graphene strip waveguide with an optimized light-graphene interaction length of 60 μm. The interaction length is controlled by a windowed area of silica layer on the silicon waveguide. Numerical simulations and experimental studies are carried out and show a nonlinear parameter