孤波电磁波在非对称反向耦合器中的传播
Solitary electromagnetic waves propagation in the asymmetric oppositely-directed coupler
摘要：
本文研究电磁波在耦合波导系统中的传播。系统部件之一是由具有正折射的非线性介质制成的标准波导，另一个部件是由具有负折射的人造材料制成的波导。构成第二波导的超材料具有线性特性，并且在这种类型的波导中传播的波在与能量通量的方向相反的方向上传播。结果表明，由于非线性正折射波导和线性负折射波导之间的线性耦合，在这种反向耦合器中存在同向传播的耦合非线性孤波。得到了相应的解析解，并将其用于数值模拟，说明了碰撞孤立波的结果对碰撞孤立波的相对速度是敏感的。
英文摘要：
We consider the electromagnetic waves propagating in the system of coupled waveguides. One of the system components is a standard waveguide fabricated from nonlinear medium having positive refraction and another component is a waveguide produced from an artificial material having negative refraction. The metamaterial constituting the second waveguide has linear characteristics and a wave propagating in the waveguide of this type propagates in the direction opposite to direction of energy flux. It is found that the coupled nonlinear solitary waves propagating both in the same direction are exist in this oppositely-directed coupler due to linear coupling between nonlinear positive refractive waveguide and linear negative refractive waveguide. The corresponding analytical solution is found and it is used for numerical simulation to illustrate that the results of the solitary wave collisions are sensible to the relative velocity of the colliding solitary waves.
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