Breathing dynamics of dissipative pure quartic soliton molecules via spectral filtering effects

doi:10.1088/1674-1056/adf1eb

Abstract Although dissipative pure quartic solitons (DPQSs) stabilized by fourth-order dispersion (FOD) and nonlinearity are widely studied, their multi-soliton dynamics in positive FOD remain underexplored. Here, we study the impact of saturation energy and filter bandwidth on breathing DPQS molecules numerically. Our findings indicate that complementary breathing DPQS molecules exchange energy through oscillating tails, exhibiting simultaneously temporal oscillations and spectral shifting. By adjusting cavity parameters, we demonstrate that the state of breathing soliton molecules is inherently governed by time separation. These findings deepen the comprehension of multi-soliton interactions and nonlinear phenomena.

Keywords: dissipative pure-quartic soliton soliton molecule breathing soliton oscillating tails

Received: 28 May 2025
Revised: 14 July 2025
Accepted manuscript online: 19 July 2025

PACS:	42.65.Sf	(Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics)
	42.65.Tg	(Optical solitons; nonlinear guided waves)
	42.55.Wd	(Fiber lasers)
	42.60.Fc	(Modulation, tuning, and mode locking)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 62175116).

Corresponding Authors: Zu-Xing Zhang
E-mail: zxzhang@njupt.edu.cn

Cite this article:

Chun-Ting Liu(刘春廷), Jun-You Lu(卢俊佑), Han-Yang Shen(申翰阳), and Zu-Xing Zhang(张祖兴) Breathing dynamics of dissipative pure quartic soliton molecules via spectral filtering effects 2026 Chin. Phys. B 35 034205

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Breathing dynamics of dissipative pure quartic soliton molecules via spectral filtering effects

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