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对时域有限差分算法在圆柱坐标下弱导光纤中应用时吸收边界条件的设置及其对计算精度的影响进行了讨论 ,提出了改善的方法。并且将这种方法应用于一般光纤和光电子晶体光纤传输特性的计算 ,得到了有用结果。
The setting of the absorption boundary condition and its influence on the calculation accuracy when the FDTD algorithm is applied in a weakly guided optical fiber with cylindrical coordinates are discussed and an improved method is proposed. And this method is applied to the calculation of transmission characteristics of general optical fiber and optoelectronic crystal fiber, and the useful result is obtained.