待熔光子晶体光纤中的热传导特性  

Heat Transfer of Fusion Splicing Photonic Crystal Fiber

作　　者：付广伟[1,2] 毕卫红[1,2] 金娃[1] 

机构地区：[1]燕山大学光电子工程系,河北秦皇岛066004 [2]燕山大学河北省特种光纤与光纤传感重点实验室,河北秦皇岛066004

出　　处：《中国激光》2009年第9期2372-2379,共8页Chinese Journal of Lasers

基　　金：国家自然科学基金(60850001)资助课题

摘　　要：在光子晶体光纤(PCF)的熔接过程中,由于包层空气孔结构的存在,同在熔接过程中存在着潜在的空气孔形变,使得加热过程更为复杂。对待熔的光子晶体光纤的热传导特性进行了研究,以二氧化碳激光作为熔接热源,根据传热学及能量守恒定律建立三维对称的热传导模型,进而对光子晶体光纤熔接的瞬态传热过程进行仿真分析和实验研究。分析表明,该模型可以很好地确定影响光子晶体光纤熔接过程中热传导特性的各个主要因素,为最终确定最佳熔接条件建立理论基础。Heat transfer problem is very important in fusion splicing process of photonic crystal fibers （PCF） due to the potential distortion which can be introduced when exposing the structure to high temperature. Such heating is further complicated to internal air-structures of PCF. The heat transfer of fusion splicing PCF and theorize for confirming the optimal fusion splicing conditions are investigated. Based on heat transfer and conservation law of energy, a three-dimensional axisymmetric conductive heat transfer model is built using a CO2 laser as heat source, the transient heat transfer in fusion splicing process of PCF is simulated in order to avoid collapsing the air holes. Experiments and analysis shows that the heat transfer model may find out heat transfer characteristic of PCF fusion splicing process, and provide theory basis for confirming optimal fusion splicing conditions.

关 键 词：光纤光学 光子晶体光纤 数学模型 瞬态热传导 最佳熔接条件 

分 类 号：TN253[电子电信—物理电子学]