改进的1,550,nm细径保偏光纤预制棒  

The Improved Preform of 1,550,nm Small Diameter Polarization Maintaining Optical Fiber

作　　者：李昌锋[1] 孙建军[1] 金忠凯 

机构地区：[1]中国电子科技集团公司第四十六研究所,天津300220

出　　处：《天津科技》2017年第11期55-56,61,共3页Tianjin Science & Technology

摘　　要：保偏光纤是制造光纤陀螺的核心材料,随着近些年的发展,光纤陀螺向着高精度和小型化发展,这就要求保偏光纤也要向细径光纤方向发展。125,μm保偏光纤研制阶段注重的是光纤损耗等光学参数,80,μm保偏光纤的研制更加注重光纤的结构参数。拍长是反映细径保偏光纤性能的一项重要参数,改进细径保偏光纤的拍长首先要从增加光纤芯区的应力双折射着手,其中减小r/a值是一种重要的手段。通过实验得到优化的过程参数,提高了细径保偏光纤的成品率,最终改进了细径保偏光纤的拍长,达到了客户实用化的要求。PMF is the core material of fiber optic gyroscope. In recent years,fiber optic gyroscope is developing towards high precision and miniaturization,which requires small diameter PMF. The optical parameter such as optical fiber loss isbecoming the hot spot for 125,μm PMF,while fiber structure parameter is for 80,μm fiber. The beat-length is an important parameter in reflecting the performance of small diameter PMF. To improve the beat-length of small diameter PMF,we should increase the stress-birefringence at core region of the fiber. It is an effective way to reduce the r/a. The study hasachieved an optimized process parameter through many experiments,increased the finished-product-rates of small diameter PMF accordingly,and finally improved the beat-length of small diameter PMF and satisfied the practical requirements of customers.

关 键 词：拍长 应力双折射 细径保偏光纤 

分 类 号：TN012[电子电信—物理电子学]