分析了低椭圆度线性极化双折射光纤中两传输模的耦合,采用流体力学中水槽参量激励孤波类比方法.从动力学角度说明了耦合模之间能量转化的机理.数值模拟观察到第一次启开或关闭距离L1和转换周期L2并分析了L1＞L2的原因。最后.根据孤子这种耦合行为.提出一种全光孤子开关设想.它允许控制脉冲及信号脉冲的幅值等参数在较大范围内波动.

The coupling of two nonequal-amplitude linear polarization solitons in lowellipticity birefringent optical fibers is analytically investigated. By analogy withparametrically excited solitary waves in a trough resonator, the mechanism of energytransform between coupled solitons in two channels is discussed in a dynamic POint of view.The first-switching distance L1 and the alternative period L2 are numerically determined andthe cause of L1>L2 is analyzed. According to the coupling behavior of solitons, an idea of all-optical soliton switching is proposed, which permits to fluctuation of the amplitudes and other parameters of the control and signal pulses in larger ranges.