Design of Fabrication-Tolerant and Compact Waveguide Superconducting Single-Photon Detector Based on TM<sub>0</sub> Mode Absorption

Yang Li; Lue Tao; Yingxuan Zhao; Haiyang Huang; Xiaojuan She; Han Liao; Junbo Zhu; Zijian Zhu; Rui Huang; Xiang Liu; Fuwan Gan

doi:10.1109/JPHOT.2021.3086868

IEEE Photonics Journal (Jan 2021)

Design of Fabrication-Tolerant and Compact Waveguide Superconducting Single-Photon Detector Based on TM<sub>0</sub> Mode Absorption

Yang Li,
Lue Tao,
Yingxuan Zhao,
Haiyang Huang,
Xiaojuan She,
Han Liao,
Junbo Zhu,
Zijian Zhu,
Rui Huang,
Xiang Liu,
Fuwan Gan

Affiliations

Yang Li: ORCiD; State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Lue Tao: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Yingxuan Zhao: ORCiD; State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Haiyang Huang: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Xiaojuan She: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Han Liao: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Junbo Zhu: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Zijian Zhu: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Rui Huang: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Xiang Liu: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
Fuwan Gan: University of Chinese Academy of Sciences, Beijing, China

DOI: https://doi.org/10.1109/JPHOT.2021.3086868
Journal volume & issue: Vol. 13, no. 3
pp. 1 – 9

Abstract

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A TM0 mode coupled travelling wave SNSPD based on SOI platform is designed. The light propagating in this device can achieve high-efficiency mode conversion from TE0 mode to TM0 mode and then absorbed by NbN nanowires on top of the waveguide. Thanks to the TM0 mode coupled detection, the length of NbN nanowire that is needed to achieve a close-to-unity photon absorption is cut down to an extremely short level of ∼5 μm. Meanwhile, this TM0 mode coupled travelling wave SNSPD is very robust against fabrication errors compared with TE0 coupled SNSPD.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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