Soliton mode-locking in microresonators enables chip-scale coherent optical frequency comb generation. However, it usually leads to multi-soliton combs with structured spectrum. Instead, the smooth spectrum of single soliton is favored for applications. Here, we introduce, experimentally and numerically, a passive mechanism for single temporal soliton formation arising from spatial mode-interaction in microresonators. Deterministic single soliton generation is observed for microresonators with strong mode-interaction in experiments and simulations. Further simulations demonstrate that the soliton number is reduced to one in order to lower the nonlinear loss into mode-interaction induced Cherenkov radiation (CR). Our results give important insights into soliton-CR interaction in cavities.
Spatial mode-interaction induced single soliton generation in microresonators / Bao, Chengying; Xuan, Yi; Leaird, Daniel E.; Wabnitz, Stefan; Qi, Minghao; Weiner, Andrew M.. - In: OPTICA. - ISSN 2334-2536. - 4:9(2017), pp. 1011-1015. [10.1364/OPTICA.4.001011]
Spatial mode-interaction induced single soliton generation in microresonators
WABNITZ, Stefan;
2017
Abstract
Soliton mode-locking in microresonators enables chip-scale coherent optical frequency comb generation. However, it usually leads to multi-soliton combs with structured spectrum. Instead, the smooth spectrum of single soliton is favored for applications. Here, we introduce, experimentally and numerically, a passive mechanism for single temporal soliton formation arising from spatial mode-interaction in microresonators. Deterministic single soliton generation is observed for microresonators with strong mode-interaction in experiments and simulations. Further simulations demonstrate that the soliton number is reduced to one in order to lower the nonlinear loss into mode-interaction induced Cherenkov radiation (CR). Our results give important insights into soliton-CR interaction in cavities.File | Dimensione | Formato | |
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