Multicolor interband solitons in microcombs

Qing-Xin Ji; Hanfei Hou; Jinhao Ge; Yan Yu; Maodong Gao; Warren Jin; Joel Guo; Lue Wu; Peng Liu; Avi Feshali; Mario Paniccia; John Bowers; Kerry Vahala

doi:10.1038/s41377-026-02200-0

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Multicolor interband solitons in microcombs

Original Articles

- Multicolor interband solitons in microcombs
- Light: Science & Applications Vol. 15, Issue 6, Pages: 1861-1869(2026)
- Affiliations：
  
  1.T. J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA, USA
  2.ECE Department, University of California Santa Barbara, Santa Barbara, CA, USA
  3.Anello Photonics, Santa Clara, CA, USA
- Author bio：
  
  Kerry Vahala (vahala@caltech.edu)
- Funds：
- DOI：10.1038/s41377-026-02200-0
  CLC：
- Received：23 July 2025，
  
  Revised：2026-01-06，
  
  Accepted：18 January 2026，
  
  Online First：11 March 2026，
  
  Published：30 June 2026
- Accepted：
Scan QR Code
Ji, Q. X. et al. Multicolor interband solitons in microcombs. Light: Science & Applications, 15, 1861-1869 (2026).
DOI：

Ji, Q. X. et al. Multicolor interband solitons in microcombs. Light: Science & Applications, 15, 1861-1869 (2026). DOI： 10.1038/s41377-026-02200-0.

摘要

Abstract

In microcombs

solitons can drive non-soliton-forming modes to induce optical gain. Under specific conditions

a regenerative secondary temporal pulse coinciding in time and space with the exciting soliton pulse will form at a new spectral location. A mechanism involving Kerr-induced pulse interactions has been proposed theoretically

leading to multicolor solitons containing constituent phase-locked pulses. However

the occurrence of this phenomenon requires dispersion conditions that are not naturally satisfied in conventional optical microresonators. Here

we report the experimental observation of multicolor pulses from a single optical pump in a way that is closely related to the concept of multicolor solitons. The individual soliton pulses share the same repetition rate and could potentially be fully phase-locked. They are generated using interband coupling in a compound resonator.

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Keywords

references

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