Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Design of Ge1-xSnx-on-Si waveguide photodetectors featuring high-speed high-sensitivity photodetection in the C- to U-bands

Not Accessible

Your library or personal account may give you access

Abstract

We present the design of ${{\rm Ge}_{1 - x}}{{\rm Sn}_x}$-on-Si waveguide photodetectors for the applications in the C- to U-bands. The GeSn photodetectors have been studied in respect to responsivity, dark current, and bandwidth, with light butt- or evanescent-coupled from an Si waveguide. With the introduction of 4.5% Sn into Ge, the GeSn waveguide PD with evanescent-coupling exhibits high responsivity of 1.25 A/W and 3 dB bandwidth of 123.1 GHz at 1.675 µm. Further increasing the Sn composition cannot improve the absorption in the U-band significantly but does lead to poorer thermal stability and higher dark current. This work suggests a promising avenue for future high-speed high-responsivity photodetection in the C- to U-bands.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Photo detection and modulation from 1,550 to 2,000 nm realized by a GeSn/Ge multiple-quantum-well photodiode on a 300-mm Si substrate

Hao Zhou, Shengqiang Xu, Shaoteng Wu, Yi-Chiau Huang, Peng Zhao, Jinchao Tong, Bongkown Son, Xin Guo, Daohua Zhang, Xiao Gong, and Chuan Seng Tan
Opt. Express 28(23) 34772-34786 (2020)

High-speed Ge/Si electro-absorption optical modulator in C-band operation wavelengths

Junichi Fujikata, Masataka Noguchi, Kazuki Kawashita, Riku Katamawari, Shigeki Takahashi, Michiharu Nishimura, Hideki Ono, Daisuke Shimura, Hiroyuki Takahashi, Hiroki Yaegashi, Takahiro Nakamura, and Yasuhiko Ishikawa
Opt. Express 28(22) 33123-33134 (2020)

GeSn p-i-n photodetector for all telecommunication bands detection

Shaojian Su, Buwen Cheng, Chunlai Xue, Wei Wang, Quan Cao, Haiyun Xue, Weixuan Hu, Guangze Zhang, Yuhua Zuo, and Qiming Wang
Opt. Express 19(7) 6400-6405 (2011)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved