The narrower the input beam, the higher the critical angle and the smaller the deviation of q0 from .The guided-wave amplitude is always smaller than that for the soliton beam in a uniform medium and approaches as guiding parameter p ! 0. 输入光束越窄,更高的临界角度和小的偏差谋利,guided-wave q0振幅总是小于梁为光孤子在均匀介质和方法指导参数p !0。Numerical simulations indicate that beams moving along the grating slowly radiate—an effect not captured by the effective-particle approach. When solitons cross the waveguide, they lose a fraction of their energy because the wing of the soliton spatial spectrum overlaps the spatial spectrum of the guided mode. The radiation rate increases as the incident angle approaches angleαb corresponding to the edge of the first Brillouin zone.12,13 The energy losses caused by the excitation of consecutive waveguides result in the slant soliton beam being trapped in one of the grating channels. This situation is shown in Fig. 1(c). Note that the propagation distance at which trapping occurs is relatively small. Intuitively, it is clear that the larger the incident angle, the higher the channel number at which trapping occurs. Such radiative trapping has much in common with the properties of discrete solitons in waveguide arrays; 数值模拟表明,光束行进中效果不radiate-an光栅慢慢effective-particle所捕获的方法。当孤子波导,他们失去了十字架的一小部分,因为他们的翅膀能量频谱重叠空间孤子的空间谱的制导模式。辐射率随入射角对应的方法angleαb边的布里渊zone.12第13例,而造成损失的能量连续波导激励源的孤子的结果,在偏梁被困于一个光栅的渠道。这种情况被显示在图1(c)。需要注意的是,被困在这发生传输距离是相对小的。直觉地,很明显,越大,越高越入射角在哪个频道号码俘获的发生。这种辐射俘获有很多共同之处的离散孤子性质在波导阵列;