Author(s): Zhu, YP (Zhu, Yupeng); Liu, Z (Liu, Zhi); Niu, CQ (Niu, Chaoqun); Pang, YQ (Pang, Yaqing); Zhang, DD (Zhang, Diandian); Liu, XQ (Liu, Xiangquan); Zheng, J (Zheng, Jun); Zuo, YH (Zuo, Yuhua); Xue, HY (Xue, Haiyun); Cheng, BW (Cheng, Buwen)

Source: OPTICS LETTERS Volume: 47 Issue: 13 Pages: 3263-3266 DOI: 10.1364/OL.461673 Published: JUL 1 2022

Abstract: 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

Accession Number: WOS:000821139500032

PubMed ID: 35776601

ISSN: 0146-9592

eISSN: 1539-4794

Full Text: https://opg.optica.org/ol/fulltext.cfm?uri=ol-47-13-3263&id=477288