Mixed domain coherent link with electrically reconfigurable IMDD and coherent modes for O-band data center applications

• Published in: Optics express Vol. 32; no. 22; p. 38550
• Main Authors: Misak, Stephen, Wissing, Aaron, Liu, Junqian, Arrunategui-Norvick, Viviana, Maharry, Aaron, Andrade, Hector, Milicevic, Mario, Chansky, Evan, Movaghar, Ghazal, Du, Xinhong, Gilardi, Giovanni, Kumar, Ranjeet, Su, Guan-Lin, Liu, Ansheng, Akulova, Yuliya, Buckwalter, James F., Saleh, Adel A. M., Coldren, Larry, Schow, Clint L.
• Format: Journal Article
• Language: English
• Published: United States Optical Society of America 21-10-2024
• ISSN: 1094-4087; 1094-4087
• DOI: 10.1364/OE.532184

We report the first O-band link with electrically reconfigurable intensity-modulation direct-detection (IMDD) and coherent operation using custom silicon photonic chips packaged with commercial electronic chips. Transmission below the KP4-FEC threshold is shown using commercial 53 Gbaud PAM4 digital signal processing (DSP) for 16QAM (200 Gbps/ λ ) and PAM4 (100 Gbps/ λ ). Efficient operation of the packaged full link at 12 and 11.2 pJ/bit is achieved for the PAM4 and 16QAM modes, respectively.