Versatile octave-spanning soliton crystals with high conversion efficiency in a Si3N4 microresonator

Adnan A.L.I. Afridi, Haizhong Weng, Michael McDermott, John F. Donegan

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Abstract

Microresonator-based soliton crystals are a key recent advancement in the study of the rich nonlinear dynamics of soliton states. The soliton crystals are self-organized temporal pulses filling the microresonator cavity and have strong comb lines with wide spacing making them of great interest in many potential applications such as communication and meteorology. However, achieving a broad spectrum, tunable repetition rates, and high conversion efficiency are still a challenge. Here, we report the deterministic generation of versatile octave-spanning soliton crystals with various repetition rates via avoided mode crossings. In addition, we investigate the conversion efficiency of the obtained soliton crystals and achieved above ∼50% in one of the devices with a suitable coupling. Our results pave the way for accessing coherent broad and tunable on-chip soliton crystals, thus requiring a rigorous and viable microcavity design to engineer the desired mode coupling position.

Original languageEnglish
JournalOptics Express
Volume31
Issue number20
Pages (from-to)33191-33199
ISSN1094-4087
DOIs
Publication statusPublished - 25 Sept 2023

Bibliographical note

Funding Information:
Funding. National Natural Science Foundation of China (61861136001); Science Foundation Ireland (17/NSFC/4918); Enterprise Ireland (DT20190014B); Irish Research eLibrary.

Publisher Copyright:
Journal © 2023.

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