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Proceedings Paper

Microfiber/SiC-nanowire coupler for all-optical photodetection
Author(s): Longfei Zhang; Ying Wang; Changrui Liao; Yiping Wang
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Paper Abstract

Semiconductor-based photodetectors have received wide attention. Traditional photodetectors are based on electrical test methods, which inevitably disturbed by dark current noise. In order to overcome this problem, this paper proposes an all-optical photodetection scheme based on a microfiber/SiC-nanowire directional coupling structure, which directly utilizes the refractive index change of SiC nanowire caused by photogenerated carriers instead of the change of photocurrent. The device is fabricated by transferring a single SiC nanowire to a microfiber with diameter of about 1 μm by microscopic operating system. When the device is irradiated by a 266 nm deep ultraviolet laser, its light detection sensitivity reaches up to 103 pm/(W/cm2).

Paper Details

Date Published: 17 May 2019
PDF: 4 pages
Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111700Y (17 May 2019);
Show Author Affiliations
Longfei Zhang, Shenzhen Univ. (China)
Ying Wang, Shenzhen Univ. (China)
Changrui Liao, Shenzhen Univ. (China)
Yiping Wang, Shenzhen Univ. (China)


Published in SPIE Proceedings Vol. 11170:
14th National Conference on Laser Technology and Optoelectronics (LTO 2019)
Jianqiang Zhu; Weibiao Chen; Zhenxi Zhang; Minlin Zhong; Pu Wang; Jianrong Qiu, Editor(s)

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