中国物理B ›› 2020, Vol. 29 ›› Issue (3): 34207-034207.doi: 10.1088/1674-1056/ab683a
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Jia Wang(王佳), Ai-Guo Sheng(盛爱国), Xin Huang(黄鑫), Rong-Yu Li(李荣玉), Guang-Qiang He(何广强)
Jia Wang(王佳)1, Ai-Guo Sheng(盛爱国)1, Xin Huang(黄鑫)1, Rong-Yu Li(李荣玉)1, Guang-Qiang He(何广强)1,2,3
摘要: Based on the nonlinear Schrödinger equation (NLSE) with damping, detuning, and driving terms describing the evolution of signals in a Kerr microresonator, we apply periodic nonlinear Fourier transform (NFT) to the study of signals during the generation of the Kerr optical frequency combs (OFCs). We find that the signals in different states, including the Turing pattern, the chaos, the single soliton state, and the multi-solitons state, can be distinguished according to different distributions of the eigenvalue spectrum. Specially, the eigenvalue spectrum of the single soliton pulse is composed of a pair of conjugate symmetric discrete eigenvalues and the quasi-continuous eigenvalue spectrum with eye-like structure. Moreover, we have successfully demonstrated that the number of discrete eigenvalue pairs in the eigenvalue spectrum corresponds to the number of solitons formed in a round-trip time inside the Kerr microresonator. This work shows that some characteristics of the time-domain signal can be well reflected in the nonlinear domain.
中图分类号: (Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics)