超连续谱
畸形波
色散(光学)
物理
光学
皮秒
光子晶体光纤
不稳定性
自相位调制
光纤
调制不稳定性
调制(音乐)
零色散波长
非线性系统
非线性光学
机械
色散位移光纤
声学
激光器
光纤传感器
量子力学
作者
Yang He,Shaofei Wang,Ao Yang,Xianglong Zeng
出处
期刊:Optics Express
[The Optical Society]
日期:2020-06-22
卷期号:28 (14): 19877-19877
被引量:3
摘要
We present an in-depth investigation of optical rogue waves (ORWs) during picosecond supercontinuum generations in photonic crystal fibers with periodic landscapes of group velocity dispersion and nonlinearity, namely dispersion oscillating fibers (DOFs). Specifically, it is shown via ensembles of numerical simulations that during supercontinuum generations, the rogue nature of extreme and rare events formed in uniform fibers can be effectively manipulated in DOFs. This is also verified by comparing single evolution dynamics in different dispersion longitudinal profiles. For investigating the influence of slow dynamics of ORW generation in DOFs, we increase the propagating distance and find out MI gain is still the major factor that influences the generation of ORWs. In addition, analytical results associated with simulations indicate the rogue manipulations in DOFs are attributed to the adjustable modulation-instability-gain due to periodic dispersion variation along fiber length. Finally, unlike MI in uniform fiber, MI gain side lobes result from quasi-phase-matching (QPM) relation in DOFs provide additional degree of freedom to control generations of ORWs. We believe our results will provide not only a novel insight of understanding ORW dynamics in presence of dispersion modulations, but also a new way of harnessing rogue waves in oceanology.
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