Optical fiber communication 1传播方向 k=√(k2+k2+k2平面波色散方程 kx=kcos a cos a= ky=kcosB cos B=ky kx=kcos y cosy= k x1 - 5 Copyright Wang Yan 2021/2/19 Optical fiber communications 1 .传播方向 x kz x x ky y x kx x x y k k k k k k k k k k z = = = = = = = + +       cos cos cos cos cos cos ( 2 2 2 平面波色散方程