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Experiment and modelling study of the modulation performance in the graphene-Si heterojunction waveguide
Author(s): Feiying Sun; Changbin Nie; Liangping Xia; Jun Shen; Shaoyun Yin; Peng Wu; Chunlei Du
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Paper Abstract

Graphene-Si heterojunction devices have been widely studied in the field of photoelectric detection, solar cells and sensors areas. However, optical modulation devices based on graphene-Si heterojunction have been rarely reported. Herein, we analyze the photoelectric performance of the graphene-Si heterojunction at different laser powers. The Fermi level of the graphene can be tuned as the photo-excited holes in Si diffuse into the graphene. For the hybrid Si-graphene waveguide modulator, the maximum modulation efficiency of 279.3 dB/cm is achieved at 1550 nm by using finite element analysis method. We hope that the study of the graphene-Si heterojunction can provide a way for application in hybrid graphene-Si waveguide modulators.

Paper Details

Date Published: 12 March 2019
PDF: 5 pages
Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 1102307 (12 March 2019); doi: 10.1117/12.2517315
Show Author Affiliations
Feiying Sun, Chongqing Institute of Green and Intelligent Technology (China)
Univ. of Chinese Academy of Sciences (China)
Yangtze Normal Univ. (China)
Changbin Nie, Chongqing Institute of Green and Intelligent Technology (China)
Liangping Xia, Yangtze Normal Univ. (China)
Jun Shen, Chongqing Institute of Green and Intelligent Technology (China)
Shaoyun Yin, Chongqing Institute of Green and Intelligent Technology (China)
Peng Wu, Chongqing Institute of Green and Intelligent Technology (China)
Chunlei Du, Chongqing Institute of Green and Intelligent Technology (China)


Published in SPIE Proceedings Vol. 11023:
Fifth Symposium on Novel Optoelectronic Detection Technology and Application
Qifeng Yu; Wei Huang; You He, Editor(s)

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