High-coherence parallelization in integrated photonics
Coherent optics has profoundly impacted diverse applications ranging from communications, LiDAR to quantum computations. However, developing coherent systems in integrated photonics comes at great expense in hardware integration and energy efficiency. Here we demonstrate a high-coherence parallelization strategy for advanced integrated coherent systems at minimal cost. By using a self-injection locked microcomb to injection lock distributed feedback lasers, we achieve a record high on-chip gain of 60 dB with no degradation in coherence. This strategy enables highly coherent channels with linewidths down to 10 Hz and power over 20 dBm. The overall electrical-to-optical efficiency reaches 19%, comparable to that of advanced semiconductor lasers. This method supports a silicon photonic communication link with an unprecedented data rate beyond 60 Tbit/s and reduces phase-related DSP consumption by 99.99999% compared to traditional III-V laser pump schemes. This work paves the way for realizing scalable, high-performance coherent integrated photonic systems, potentially benefiting numerous applications.
Authors
- Zixuan Zhou (ORCID: https://orcid.org/0009-0005-3817-1862)
- Xuguang Zhang (ORCID: https://orcid.org/0009-0008-6512-4238)
- Weiwei Hu (ORCID: https://orcid.org/0000-0002-3485-6304)
- Warren Jin (ORCID: https://orcid.org/0000-0002-4297-7982)
- Dong Pan (ORCID: https://orcid.org/0000-0001-6494-0585)
- Zihan Tao
- Zhangfeng Ge
- Bitao Shen (ORCID: https://orcid.org/0000-0002-3786-6815)
- Zhou Fang (ORCID: https://orcid.org/0000-0002-5389-6694)
- Lin Chang (ORCID: https://orcid.org/0000-0003-4312-5850)
- Ning Zhang (ORCID: https://orcid.org/0000-0002-1659-2907)
- Ming Jin (ORCID: https://orcid.org/0000-0002-0491-4649)
- Xingjun Wang (ORCID: https://orcid.org/0000-0001-8206-2544)
- Haowen Shu (ORCID: https://orcid.org/0000-0002-5429-8661)
- Jiahui Huang (ORCID: https://orcid.org/0000-0002-7398-179X)
- Yujun Chen (ORCID: https://orcid.org/0009-0000-4503-0105)
- Pengfei Cai
- Yijun Guo
- John E. Bowers (ORCID: https://orcid.org/0000-0003-4270-8296)
- Ruixuan Chen (ORCID: https://orcid.org/0000-0002-2925-9484)
- Minxue Zhuang
- Yadong Liu (ORCID: https://orcid.org/0000-0001-7880-0882)
Institutions
- King University (US)
- University of California, Santa Barbara (US)
- Peking University (CN)
- Beijing Jiaotong University (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-09-10
- DOI
- https://doi.org/10.1038/s41467-024-52269-7
- Citations
- 31
- Primary Topic
- Optical Network Technologies
- Type
- article
- Field-Weighted Citation Impact
- 6.47
Funders
- National Natural Science Foundation of China
- Peking University
- National Key Research and Development Program of China