Resonance-enhanced all-optical modulation of WSe2-based micro-resonator

Zhang Zijian; Chen Guowei; Yang Mingyu; Ou Yunyao; Luo Luqi; Lu Dongqin; Zhang Enze; Guan Heyuan; Lu Huihui; Zhu Wenguo; Yu Jianhui; Dong Jiangli; Qiu Wentao; Chen Zhe; Peng Gangding

doi:10.1515/nanoph-2019-0425

Nanophotonics (Dec 2019)

Resonance-enhanced all-optical modulation of WSe2-based micro-resonator

Zhang Zijian,
Chen Guowei,
Yang Mingyu,
Ou Yunyao,
Luo Luqi,
Lu Dongqin,
Zhang Enze,
Guan Heyuan,
Lu Huihui,
Zhu Wenguo,
Yu Jianhui,
Dong Jiangli,
Qiu Wentao,
Chen Zhe,
Peng Gangding

Affiliations

Zhang Zijian: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Chen Guowei: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Yang Mingyu: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Ou Yunyao: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Luo Luqi: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Lu Dongqin: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Zhang Enze: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Guan Heyuan: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Lu Huihui: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Zhu Wenguo: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Yu Jianhui: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Dong Jiangli: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Qiu Wentao: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Chen Zhe: Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, P.R. China
Peng Gangding: School of Electrical Engineering & Telecommunications, University of New South Wales, Sydney 1466, Australia

DOI: https://doi.org/10.1515/nanoph-2019-0425
Journal volume & issue: Vol. 9, no. 8
pp. 2387 – 2396

Abstract

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Two-dimensional material tungsten diselenide (WSe2) nanosheets are coated on a microfibre knot resonator (MKR) to achieve an all-optical power modulation functionality. On account of the strong absorption property of WSe2 and the resonance enhancement properties of MKR, the transmitted optical power of signal light within the WSe2-based MKR can be effectively modulated. The sensitivities of light–control–light experiments with 405- and 660-nm lasers are as high as 0.32 and 0.12 dB/mW, respectively. The sensitivities and power tuning can be enhanced by a higher resonance Q and a larger extinction ratio of MKR. In terms of the response time, the average rise and fall times are 3.5/3.7 and 3.5/4 ms with 405- and 660-nm lasers, respectively. This proposed structure is expected to achieve potential applications in all-fibre-optic–based tunable device such as optical modulator, detector, and so on.

Published in Nanophotonics

ISSN: 2192-8606 (Print); 2192-8614 (Online)
Publisher: De Gruyter
Country of publisher: Germany
LCC subjects: Science: Physics
Website: https://www.degruyter.com/journal/key/nanoph/html#submit

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