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金属的塑性形变特性使金属毛细管空芯光纤在激光传输过程中容易产生不可逆塑性形变,依据金属管材的弹塑性弯曲理论和液相沉积金属毛细管氧化锗(GeO2)空芯光纤的工艺要求,本文对铍铜和不锈钢毛细管GeO2全反射空芯光纤的弹性弯曲半径进行了计算并通过实验验证。结果表明,铍铜和不锈钢空芯光纤的最小弹性弯曲半径的计算值与实验值相吻合。
According to the elastic-plastic bending theory of metal pipe and the technical requirement of liquid-phase deposition of GeO2 hollow fiber with metal capillary, the metal plastic deformation feature makes the metal capillary hollow fiber easy to produce irreversible plastic deformation during laser transmission. The bending radius of beryllium copper and stainless steel capillary GeO2 total reflection hollow fiber was calculated and verified by experiment. The results show that the calculated values of the minimum elastic bending radius of beryllium copper and stainless steel hollow fiber coincide with the experimental values.