In the cladding while counting in the phase change, using the transverse shift and the phase change of the total reflected light, we derive the beat length formula of the isotrope fiber.
利用全反射光在光纤包层中的横向偏移和相位变化导出了全反射拍长计算公式。
2
The groundwater flow is simulated with the seepage model of heterogeneity isotrope, and the partial differential equations are solved with finite difference scheme of irregular triangle net.