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Pulse evolution and multi-pulse state of coherently coupled polarization domain walls in a fiber ring laser

Authors :
Linyong Yang
Bin Zhang
Xiran Zhu
Jing Hou
Shuailin Liu
Desheng Zhao
Source :
Optics express. 29(19)
Publication Year :
2021

Abstract

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 ps2). 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 ps2) 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.

Details

ISSN :
10944087
Volume :
29
Issue :
19
Database :
OpenAIRE
Journal :
Optics express
Accession number :
edsair.doi.dedup.....5914c76683535d904a76faa08ee06591