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本文用OTDR、Vikers显微观察仪和腐蚀等手段观察了损耗台阶附近的光纤断面、侧面和光纤长度方向的情况,力图找出台阶出现的原因。分析表明,台阶的形成可能是拉丝过程中光纤抖动,造成光纤局部应力(微弯)引起的。
In this paper, we use OTDR, Vikers microscopy and etching methods to observe the optical fiber section near the loss step, the length of the side and the direction of the fiber, trying to find out the reasons for the level. The analysis shows that the formation of the step may be caused by the optical fiber jitter in the drawing process, resulting in the local stress (slight bending) of the optical fiber.