Pure-quartic soliton in a birefringence-managed fiber laser

Ziya Tang, Lisha Tu, Yu Jiang, Jiachen Wang, Jinzhang Wang, Peiguang Yan, Xing Liu, Shuangchen Ruan and Chunyu Guo

Chaos, Solitons & Fractals, 2024, vol. 183, issue C

Abstract: Pure-quartic soliton (PQS) fiber lasers with a great variety of operating regimes have aroused considerable interest in high-energy ultrashort pulses and novel soliton patterns. Here, we numerically investigate the generation and dynamic properties of birefringence-managed pure-quartic soliton (BMPQS) in a positive fourth-order dispersion (FOD) fiber laser consisting of single-mode fibers and a section of polarization-maintaining fiber. The formation mechanism of the chirp-free BMPQS is dominated by the phase-matching effect, which arises from the co-actions of the birefringence, positive FOD, and nonlinear effects. It is observed that a higher FOD coefficient leads to energy transfer between the spectral sidebands inside the BMPQS. Moreover, the evolution of the BMPQS with the increase of the pump power confirms the phase-matching theory. Finally, the BMPQS molecule can be obtained with further increasing the pump power. This work offers a new avenue to create chirp-free pulses in positive FOD fiber lasers and enriches the sub-families of PQSs.

Keywords: Pure-quartic soliton; Birefringence; Fourth-order dispersion; Fiber laser (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:183:y:2024:i:c:s0960077924004557

DOI: 10.1016/j.chaos.2024.114903

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