Optical Kerr solitons generation based on microresonators is essential in nonlinear optics.Among various soliton generation processes,the single soliton generation plays a pivotal role since it ensures rigorous mode-locking on each comb line whose interval equals the free spectral range(FSR)of the microresonator.Current studies show that single soliton generation is challenging due to cavity instability.Here,we propose a new method to greatly improve single soliton generation probalility in the anomalous group velocity dispersion(GVD)regime in a micro-ring resonator based on silicon nitride.The improve-ment is realized by introducing mode depletion through an integrated coupled filter.It is convenient to introduce control-lable single mode depletion in a micro-ring resonator by adjusting the response function of a coupled filter.We show that spectral mode depletion(SMD)can significantly boost the single soliton generation probability.The effect of SMD on the dynamics of optical Kerr solitons generation are also discussed.The proposed method offers a straightforward and simple way to facilitate robust single soliton generation,and will have an impact on the research development in optical Kerr soliton generation and on-chip optical frequency mode manipulation.

Boqing Zhang;Nuo Chen;Xinda Lu;Yuntian Chen;Xinliang Zhang;Jing Xu

School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China;Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China

光电子前沿（英文版）

[1]Boqing Zhang;Nuo Chen;Xinda Lu;Yuntian Chen;Xinliang Zhang;Jing Xu-.Dissipative Kerr single soliton generation with extremely high probability via spectral mode depletion)[J].光电子前沿（英文版）,2022(04):76-86

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