圆柱介质波导的场方程 于是进一步写出 E E V 0 H H (29-6) 应用分离变量法求解,在圆柱坐标系中具体为 02(Eri\t OE 1a2(E ar2(H )ra(H ) r2 002(H +(n2k-B2) E (29-7) 0=/∥于是进一步写出 ( ) + − l = zi zi i zi zi E H k n E H 2 0 2 2 2 0 (29-6) 应用分离变量法求解,在圆柱坐标系中具体为 2 2 2 2 2 2 0 1 1 2 2 0 r E H r r E H r E H n k E H zi zi zi zi zi zi i zi zi + + + − = ( ) (29-7) 一、圆柱介质波导的场方程