竞争非局域介质中光束调控

Beam Steering in Nonlocal Mediumwith Competing Nonlinearities

非局域空间孤子具有低功率、类似粒子的弹性碰撞特性,因此在光信息处理和光连接领域具有潜在应用。为了获得光束传输的有效控制方法,数值计算了亮孤子及亮孤子对由非局域介质进入竞争非局域介质后的传输行为。发现,非局域亮孤子进入竞争非局域介质后以呼吸子的形式传输。非局域偶极孤子进入竞争非局域介质后分裂成两个独立传输的亮孤子。反位相非局域亮孤子组成的震荡束缚态进入竞争非局域介质后的传输行为与界面(非局域介质与竞争非局域介质的交界)位置有关。当界面选到节点(非局域孤子间距离取最小值的点)附近时,震荡束缚态分裂成两个独立的孤子;界面选到其它位置时,震荡束缚态以准束缚态形式传输。该发现为光的传输与控制提供了新的方法。

Nonlocal spatial solitons have potential applications in all-optical signal processing and optical interconnects due to their low power and particle-like nature on interactions. In order to obtain the effective method to beam steering,the propagation of bright solitons and soliton pairs from the nonlocal medium to the nonlocal medium with competing nonlinearities is investigated by the numerical simulations. When propagate from nonlocal medium to the nonlocal medium with competing nonlinearities,the nonlocal bright solitons will propagate in the form of breather,the nonlocal dipole solitons will split into two individual solitons,however,the propagation of the nonlocal oscillating bound state which is composed by two out-of-phase solitons depends on the position of the interface（ nonlocal medium and nonlocal media with competing nonlinearities interface）. When the position of the interface is choose at the node（ the minimum distance of the soliton pairs）,the nonlocal oscillating bound state will split into two individual solitons,otherwise,and the oscillating bound state will propagate in the form of bound state. These results introduce a new way to beam propagation and steering.