标题： 光学涡旋孤子的波导特性 显示英文标题

标题： Waveguiding properties of optical vortex solitons

摘要： 我们研究了在自聚焦和自散焦非线性介质中，由光涡旋孤子引起的线性和非线性波导的特性，针对的是可饱和非线性响应的情况。 我们证明了由涡旋引起的波导可以引导基模和第一阶导模，这些导模与涡旋一起，在导模振幅较大的情况下，可以形成不同类型的复合涡旋-模矢量孤子。 在自聚焦可饱和介质的情况下，我们证明了一个大振幅的导模可以稳定通常由于方位调制不稳定性而衰减的环状涡旋结构。 显示英文摘要

摘要： We study the properties of linear and nonlinear waveguides induced by optical vortex solitons in both self-defocusing and self-focusing nonlinear media, for the case of a saturable nonlinear response. We demonstrate that the vortex-induced waveguides can guide both fundamental and first-order guided modes which together with the vortex may form, for larger amplitudes of the guide modes, different types of composite vortex-mode vector solitons. In the case of the self-focusing saturable medium, we demonstrate that a large-amplitude guided mode can stabilize the ring-like vortex structure which usually decays due to azimuthal modulational instability.