Coherent ePIC Receiver for 64 GBaud QPSK in 0.25 μm Photonic BiCMOS Technology

Sergiy Gudyriev, Christian Kress, Heiner Zwickel, Juned N. Kemal, Stefan Lischke, Lars Zimmermann, Christian Koos, J. Christoph Scheytt
2019 Journal of Lightwave Technology  
In this paper, we present a monolithically integrated coherent receiver with on-chip grating couplers, 90°hybrid, photodiodes and transimpedance amplifiers. A transimpedance gain of 7.7 kΩ was achieved by the amplifiers. An opto-electrical 3 dB bandwidth of 34 GHz for in-phase and quadrature channel was measured. A real-time data transmission of 64 GBd-QPSK (128 Gb/s) for a single polarization was performed. Index Terms-Silicon photonics, electronic photonic integrated circuit, single chip coherent receiver, optical communications.
doi:10.1109/jlt.2018.2881107 fatcat:2bxvklvpqndnbezf3wwm4kuwnm