2021/01/29 by Mengxi Tan, Xingyuan Xu, David J. Moss · 1 citation
Engineering · Physics and Astronomy · #eess.SP #physics.app-ph #physics.optics
paper · pdf · doi:10.23919/mwp48676.2020.9314476
published as IEEE Microwave Photonics Conference 2020 talk We2.3 · 5 pages, 5 figures, 81 references
arxiv created 2021/01/29 · arxiv updated 2021/04/02
We report world record high data transmission over standard optical fiber from a single optical source. We achieve a line rate of 44.2 Terabits per second (Tb/s) employing only the C-band at 1550nm, resulting in a spectral efficiency of 10.4 bits/s/Hz. We use a new and powerful class of micro-comb called soliton crystals that exhibit robust operation and stable generation as well as a high intrinsic efficiency that, together with an extremely low spacing of 48.9 GHz enables a very high coherent data modulation format of 64 QAM. We achieve error free transmission across 75 km of standard optical fiber in the lab and over a field trial with a metropolitan optical fiber network. This work demonstrates the ability of optical micro-combs to exceed other approaches in performance for the most demanding practical optical communications applications.