Symmetry and asymmetry nonlinear modes in dual cylinder waveguide shells coupled by a rotating double-well connection
Symmetry and asymmetry nonlinear modes in dual cylinder waveguide shells coupled by a rotating double-well connection
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通过旋转双阱连接耦合的双圆柱波导壳中的对称和不对称非线性模式
DOI：
10.1142/s021886351850039x
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发表时间：
2019-06
影响因子：
2.7
通讯作者：
Luo Zhihuan
中科院分区：
文献类型：
--
作者：
Luo Weiwen;Chen Ziyan;Zou Zongjun;Fan Zhiwei;Xu Jun;Luo Zhihuan
本文研究了具有自聚焦克尔效应的双圆柱波导壳中的非线性基模。这种双阱连接通过俯仰速率扭曲，并产生空间依赖的线性混合，其起到有效旋转双阱势的作用。在该系统中的基本非线性模式的波形和功率分布之间的对称性转变可以由连接的总功率和转速引起。从系统中发现了四种模式：波对称和功率对称（WSPS）、波对称和功率不对称（WSPA）、波不对称和功率对称（WAPS）和波不对称和功率不对称（WAPA）。本文系统地研究了这些模式与光场总功率、旋转速度和耦合强度的关系。本文的研究结果对新型非线性全光器件的制备具有潜在的应用价值。
We study the fundamental nonlinear modes in a dual-cylinder waveguide shell, which features a self-focusing Kerr effect, coupled by a double-well connection. This double-well connection is twisted by a pitch rate and creates a spatial dependent linear mixing, which plays the role of an effective rotating double-well potential. Symmetry transition between the waveform and the power distribution of the fundamental nonlinear modes in this system can be induced both by the total power and by the rotation speed of the connection. Four types of modes — wave symmetry and power symmetry (WSPS), wave symmetry and power asymmetry (WSPA), wave asymmetry and power symmetry (WAPS) and wave asymmetry and power asymmetry (WAPA) — are found from the system. The dependence of these modes on the total power of the light field, the rotation speed and the coupling strength of the connection are systematically studied through the paper. The finding of this paper may offer potential applications in fabrication of new types of nonlinear all-optical devices.
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