Author(s): Li, WZ (Li, Weizhong); Zhang, HG (Zhang, Hongguang); Hu, X (Hu, Xiao); Lu, DL (Lu, Donglai); Chen, DG (Chen, Daigao); Chen, SK (Chen, Sikai); He, J (He, Jian); Wang, L (Wang, Lei); Qi, N (Qi, Nan); Xiao, X (Xiao, Xi); Yu, SH (Yu, Shaohua)

Source: OPTICS EXPRESS Volume: 29 Issue: 10 Pages: 14304-14313 DOI: 10.1364/OE.421980 Published: MAY 10 2021

Abstract: We demonstrate a co-designed optical receiver, which is hybrid-integrated with a silicon-photonic photodetector (PD) and silicon-germanium (SiGe) trans-impedance amplifier (TIA). Accurate equivalent circuit models of PD and electrical parasitic of chip-on-board (COB) assembly are built for co-simulation with Tu. Inductive peaking and equalizer (EQ) techniques are proposed in the design of TIA to extend the bandwidth of the optical receiver. The measured electrical 3-dB bandwidth of TIA and optical-to-electrical (O-E) 3-dB bandwidth of optical receiver are above 36.8 GHz and 36 GHz, respectively. For the optical receiver, clear eye diagrams up to a data rate of 80 Gbit/s are realized. The bit-error ratios (BER) for the NRZ signal with a different bit rate and received optical power are experimentally measured, and 100 Gbit/s NRZ operation is successfully achieved with a soft-decision forward error correction (SD-FEC) threshold. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Accession Number: WOS:000647620600013

PubMed ID: 33985153

ISSN: 1094-4087

Full Text: https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-10-14304&id=450440