Open AccessHigh-power Si-Ge photodiode assisted by doping regulation
Author(s) -
Zhibin Jiang,
Yu Yu,
Yilun Wang,
De Zhou,
Wentao Deng,
Chi Zhang
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.417165
Subject(s) - photodiode , materials science , optoelectronics , photocurrent , photonics , silicon photonics , silicon , fabrication , optical power , doping , optics , physics , medicine , laser , alternative medicine , pathology
High-power silicon-based photodiodes are key components in many silicon photonics systems, such as microwave photonics systems, an optical interconnection system with multi-level modulation formats, etc. Usually, the saturation power of the silicon-germanium (Si-Ge) photodiode is limited by the space-charge screening (SCS) effect and the feasibility of the fabrication process. Here, we propose a high saturation power Si-Ge photodiode assisted by doping regulation. Through alleviating the SCS effect of the photodiode, we successfully demonstrate an 85.7% improvement on the saturation power and a 57% improvement on the -1 dB compression photocurrent. The proposed high-power Si-Ge photodiode requires no specific fabrication process and will promote the low-cost integrated silicon photonics systems for more applications.