Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators

Kaixuan Zhu; Xinrui Luo; Yuanlei Wang; Ze Wang; Tianyu Xu; Du Qian; Yinke Cheng; Junqi Wang; Haoyang Luo; Yanwu Liu; Xing Jin; Zhenyu Xie; Xin Zhou; Min Wang; Jian-Fei Liu; Xuening Cao; Ting Wang; Shui-Jing Tang; Qihuang Gong; Bei-Bei Li; Qi-Fan Yang

doi:10.1038/s41377-026-02186-9

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Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators

Original Articles

- Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators
- Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators
- Light: Science & Applications 2026年15卷第6期页码：2037-2045
- Affiliations：
  
  1.State Key Laboratory for Artificial Microstructure and Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
  2.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
  3.National Biomedical Imaging Center, College of Future Technology, Peking University, Beijing, China
  4.Peking University Yangtze Delta Institute of Optoelectronics, Nantong, Jiangsu, China
  5.Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
- Author bio：
  
  Qi-Fan Yang (leonardoyoung@pku.edu.cn)
- Funds：
- DOI：10.1038/s41377-026-02186-9
  中图分类号：
- 收稿：2025-08-08，
  
  修回：2026-01-04，
  
  录用：2026-01-07，
  
  网络首发：2026-03-30，
  
  纸质出版：2026-06-30
- Accepted：
Scan QR Code
Kaixuan Zhu, Xinrui Luo, Yuanlei Wang, 等. Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators[J]. Light: Science & Applications, 2026,15(6):2037-2045.

Zhu, K. X. et al. Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators. Light: Science & Applications, 15, 2037-2045 (2026).
Kaixuan Zhu, Xinrui Luo, Yuanlei Wang, 等. Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators[J]. Light: Science & Applications, 2026,15(6):2037-2045. DOI： 10.1038/s41377-026-02186-9.

Zhu, K. X. et al. Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators. Light: Science & Applications, 15, 2037-2045 (2026). DOI： 10.1038/s41377-026-02186-9.

摘要

Abstract

The drive to miniaturize optical frequency combs for practical deployment has spotlighted microresonator solitons as a promising chip-scale candidate. However

these soliton microcombs could be very power-hungry when their span increases

especially with fine comb spacings. As a result

realizing an octave-spanning comb at microwave repetition rates for direct optical-microwave linkage is considered not possible for photonic integration due to the high power requirements. Here

we introduce the concept of resonant-coupling to soliton microcombs to reduce pump consumption significantly. Compared to conventional waveguide-coupled designs

we demonstrate (i) a threefold increase in spectral span for high-power combs and (ii) up to a tenfold reduction in repetition frequency for octave-spanning operation. This configuration is compatible with laser integration and yields reliable

turnkey soliton generation. By eliminating the long-standing pump-power bottleneck

microcombs will soon become readily available for portable optical clocks

massively parallel data links

and field-deployable spectrometers.

关键词

Keywords

references

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