Microresonator soliton frequency combs via cascaded Brillouin scattering
Abstract Microresonator frequency combs are vital for advancing optical communications and sensing, but current methods face challenges in achieving low phase noise and flexible repetition rates simultaneously. Here, we demonstrate forward-propagating soliton frequency combs using cascaded Brillouin scattering in a silica resonator. This method bridges distinct resonator modes and decouples soliton repetition rates from the Brillouin frequency shift (~10 GHz in silica). By generating soliton pulses at 107 GHz, we show that the repetition rates can be tailored through resonator geometry without compromising low noise. This integration of Brillouin lasing with microcombs unites stability and design flexibility, overcoming prior limitations. The results can enable scalable photonic platforms for applications such as LiDAR, high-capacity optical networks, and precision microwave generation. This technique is of interest for technologies that demand both ultra-stable and customizable light sources.
Authors
- Jijun He
- Arghadeep Pal (ORCID: https://orcid.org/0000-0003-1214-0556)
- Shuangyou Zhang (ORCID: https://orcid.org/0009-0005-4785-9626)
- Yaojing Zhang (ORCID: https://orcid.org/0000-0002-2663-0188)
- Shilong Pan (ORCID: https://orcid.org/0000-0003-2620-7272)
- Pascal Del’Haye (ORCID: https://orcid.org/0000-0002-6517-6942)
- Haochen Yan (ORCID: https://orcid.org/0000-0002-4364-3247)
- George N. Ghalanos (ORCID: https://orcid.org/0000-0003-4218-8892)
- Toby Bi (ORCID: https://orcid.org/0000-0001-5670-6115)
- Hao Zhang (ORCID: https://orcid.org/0000-0001-7497-480X)
Institutions
- Friedrich-Alexander-Universität Erlangen-Nürnberg (DE)
- Max Planck Institute for the Science of Light (DE)
- Chinese University of Hong Kong, Shenzhen (CN)
- Technical University of Denmark (DK)
- Nanjing University of Aeronautics and Astronautics (CN)
Publication Details
- Journal
- Communications Physics
- Published
- 2025-05-24
- DOI
- https://doi.org/10.1038/s42005-025-02095-0
- Citations
- 8
- Primary Topic
- Advanced Fiber Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 9.97
Funders
- European Commission
- National Natural Science Foundation of China
- Government of Jiangsu Province
- China Scholarship Council
- Natural Science Foundation of Jiangsu Province
- Chinese University of Hong Kong
- Horizon 2020 Framework Programme
- National Key Research and Development Program of China