Open AccessPulse evolution and multi-pulse state of coherently coupled polarization domain walls in a fiber ring laser
Author(s) -
Xiran Zhu,
Bin Zhang,
Desheng Zhao,
Linyong Yang,
Shuailin Liu,
Jing Hou
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.436030
Subject(s) - optics , fiber laser , materials science , birefringence , bandwidth limited pulse , polarization (electrochemistry) , pulse (music) , polarization maintaining optical fiber , pulse wave , femtosecond pulse shaping , mode locking , laser , ultrashort pulse , optical fiber , physics , fiber optic sensor , chemistry , detector
Pulse evolution and multi-pulse state of coherently coupled polarization domain walls (PDW) is experimentally demonstrated in a novel fiber ring laser. Versatile pulse shapes benefit by wide range moving of PDW in the weakly birefringent fiber. The 8.6 m short-cavity structure is more compact and accessible based on a 976 nm pump with nearly zero negative dispersion (-0.0002 ps 2 ). Besides, multi-pulse patterns such as PDW splitting, harmonic mode-locking, and periodic soliton collision are also observed under larger net negative dispersion (-3.09 ps 2 ) and 151m-longer cavity. This is the first demonstration of coherently coupled PDW in a fiber laser using a bandpass filter and the formation of coherently coupled PDW is ascribed to the BPF's force filtering.