Demonstration of a 2 × 800 Gb/s/wave Coherent Optical Engine Based on an InP Monolithic PIC
Stefano Porto, Mohammad Reza Chitgarha, Irene Leung, Robert Maher, Ryan Going, S. Wolf, P. Studenkov, Jiaming Zhang, Hossein Hodaei, Thomas Frost, Huan-Shang Tsai, S. Buggaveeti, Amir Rashidinejad, Amin Yekani, Reza Mirzaei Nejad, Miguel Iglesias Olmedo, S. Kerns, Júlio C. M. Diniz, Donald Pavinski, Robert H. Brigham, Ben Foo, Mohammad Al-Khateeb, S. Koenig, Parmijit Samra, M. Missey, V. Dominic, Han Sun, Steve Sanders, John Osenbach, S. Corzine, Peter Evans, V. Lal, M. Ziari
Abstract
We report on the development of a two-channel digital coherent optics (DCO) module, based on a monolithic InP photonic integrated circuit (PIC) transceiver and SiGe application-specific integrated circuit (ASIC), paired with a real-time 7 nm digital signal processing (DSP) ASIC. The high-performance coherent optical engine, which utilizes digital Nyquist subcarriers and probabilistic constellation shaping (PCS) techniques, enables long-haul and ultra-long-haul transmission distances over mixed fiber and amplifier types. This work discusses the performance of a DCO unit operating at multiple data rates over three practical real-world-like network distances. 800 Gb/s data transmission over a 1,000 km standard single mode fiber link was achieved using a 96 GBd, PCS-64QAM modulation format. Results of extended reaches of over 2,400 km and 5,000 km are also presented with data rates of 600 Gb/s and 400 Gb/s, respectively.