Nonlinear Multimodal Interference as Ultrafast Photonic Device for Dual-Wavelength Domain-Wall Dark Pulse Generation  

作　　者：王珊 宋博乐 窦鑫河 乔飞鸿 李响 王锦波 吕志国 Shan Wang;Bo-Le Song;Xin-He Dou;Fei-Hong Qiao;Xiang Li;Jin-Bo Wang;Zhi-Guo Lv(School of Physical Science and Technology,Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region,Inner Mongolia University,Hohhot 010021,China)

机构地区：[1]School of Physical Science and Technology,Key Laboratory of Semiconductor Photovoltaic Technology of Inner Mongolia Autonomous Region,Inner Mongolia University,Hohhot 010021,China

出　　处：《Chinese Physics Letters》2024年第7期47-52,共6页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No.12164030);the Young Science and Technology Talents of Inner Mongolia (Grant No.NJYT22101);the Central Government Guides Local Science and Technology Development Fund Projects (Grant No.2023ZY0005)。

摘　　要：In comparison to bright pulses, better stability that is not susceptible to loss makes dark pulses accessible for applications in such fields as signal processing, optics sensing, and quantum communication. Here we investigate the dual-wavelength domain-wall dark pulse generation in a graded-index multimode fiber(GIMF) based anomalous dispersion single-mode fiber(SMF) laser. By optimizing intra-cavity nonlinearity and pulse polarization, the mode-locked states can evolve each other between bright pulses, dark pulses, and bright-dark pulse pairs. The evolution mechanism among them may be relevant to the coherent mode superposition, spectral filtering, and mode selection in SMF-GIMF-SMF hybrid-fiber modulation devices that affect the pulse formation and evolution in temporal, frequency, and space domains. These results provide a valuable reference for promoting further development of nonlinear optics and ultrafast optics, in which ultrafast photonic devices, with low cost, simple manufacture as well as wide adaptability, as novel pulsed generation technique, play a vital role.

关 键 词：fiber polarization optics 

分 类 号：TN25[电子电信—物理电子学]