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利用热传导理论，结合LPHVD工艺，在圆柱体模型基础上分析了光纤工艺中激光熔融过程。得到了光纤石英预制棒内的温度分布函数T（ρ，θ，Z，t）和分布曲线。
Using the theory of heat conduction and LPHVD process, the laser melting process in optical fiber process was analyzed based on the cylinder model. The temperature distribution function T (ρ, θ, Z, t) and distribution curve in the optical fiber preform were obtained.