Laser soliton microcombs on silicon
Abstract
Silicon photonics enables wafer-scale integration of optical functionalities on chip. A silicon-based laser frequency combs could significantly expand the applications of silicon photonics, by providing integrated sources of mutually coherent laser lines for terabit-per-second transceivers, parallel coherent LiDAR, or photonics-assisted signal processing. Here, we report on heterogeneously integrated laser soliton microcombs combining both InP/Si semiconductor lasers and ultralow-loss silicon nitride microresonators on monolithic silicon substrate. Thousands of devices are produced from a single wafer using standard CMOS techniques. Using on-chip electrical control of the microcomb-laser relative optical phase, these devices can output single-soliton microcombs with 100 GHz repetition rate. Our approach paves the way for large-volume, low-cost manufacturing of chip-based frequency combs for next-generation high-capacity transceivers, datacenters, space and mobile platforms.
Cite
@article{arxiv.2103.02725,
title = {Laser soliton microcombs on silicon},
author = {Chao Xiang and Junqiu Liu and Joel Guo and Lin Chang and Rui Ning Wang and Wenle Weng and Jonathan Peters and Weiqiang Xie and Zeyu Zhang and Johann Riemensberger and Jennifer Selvidge and Tobias J. Kippenberg and John E. Bowers},
journal= {arXiv preprint arXiv:2103.02725},
year = {2021}
}