Dispersion engineering for broadband visible microcombs via mode hybridization and inverse design
We propose a reliable and simple approach for dispersion engineering in lithium niobate microring resonators (MRRs). With strong coupling-induced mode hybridization and inverse design method, we overcome the large normal dispersion and achieve broadband frequency comb coverage near 525 nm. We adopt a neural network method in the inverse design, which outperforms the traditional forward design based on manual trial-and-error and intuitive judgment. Our numerical results demonstrate the possibility of generating a visible Kerr soliton microcomb with a bandwidth of 214.4 nm in a single MRR, which holds significant potential for applications in bioimaging and on-chip atomic clocks.
Authors
- Chang‐Ling Zou (ORCID: https://orcid.org/0000-0003-2484-7292)
- Z. W. Zhao (ORCID: https://orcid.org/0000-0003-2430-9857)
- Ya Hu
- Xiankai Sun (ORCID: https://orcid.org/0000-0002-9137-0298)
- Qijing Lu (ORCID: https://orcid.org/0000-0001-7786-0437)
- Juanjuan Lu (ORCID: https://orcid.org/0000-0003-1938-9119)
- Ming Li (ORCID: https://orcid.org/0000-0001-9900-8018)
- Z. C. Feng (ORCID: https://orcid.org/0000-0002-1200-1970)
- Ruiji Dong
Institutions
- University of Science and Technology of China (CN)
- Chinese University of Hong Kong (HK)
- ShanghaiTech University (CN)
- Ministry of Education (PT)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-02-07
- DOI
- https://doi.org/10.1364/ol.555498
- Citations
- 2
- Primary Topic
- Advanced Fiber Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 2.49
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Fujian Province
- Chinese University of Hong Kong