High-speed and high-power germanium photodetector based on a trapezoidal absorber

被引：13

作者：

Zhu, Yupeng ^{[1
,2
]}

Liu, Zhi ^{[1
,2
]}

Niu, Chaoqun ^{[1
,2
]}

Pang, Yaqing ^{[1
,2
]}

Zhang, Diandian ^{[1
,2
]}

Liu, Xiangquan ^{[1
,2
]}

Zheng, Jun ^{[1
,2
]}

Zuo, Yuhua ^{[1
,2
]}

Xue, Haiyun ^{[3
]}

Cheng, Buwen ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Syst Packaging & Integrat Res Ctr, Inst Microelect, Beijing 100029, Peoples R China

来源：

OPTICS LETTERS | 2022年 / 47卷 / 13期

基金：

中国国家自然科学基金;

关键词：

COUPLER;

D O I：

10.1364/OL.461673

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A compact high-power germanium photodetector (Ge PD) is experimentally demonstrated by re-engineering light distribution in the absorber. Compared with a conventional Ge PD, the proposed structure shows a DC saturation photocurrent improved by 28.9% and 3 dB bandwidth as high as 49.5 GHz at 0.1 mA. Under the same photocurrent of 10.5 mA, the proposed Ge PD shows a 3 dB bandwidth of 11.1 GHz, which is almost double the conventional Ge PD (5.6 GHz). The 25 Gb/s eye-diagram measurement verifies the improved power handling capability. The compact size and manufacturing simplicity of this structure will enable new applications for integrated silicon photonics. (C) 2022 Optica Publishing Group

引用

页码：3263 / 3266

页数：4

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