一种小尺寸抗弯曲光纤的制备与性能研究  

Fabrication and Experiment of a Small-size Anti-bending Optical Fiber

作　　者：曹珊珊 郭朝阳 徐海涛 油光磊 刘志忠 郑加金 韦玮 CAO Shanshan;GUO Chaoyang;XU Haitao;YOU Guanglei;LIU Zhizhong;ZHENG Jiajin;WEI Wei(College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Zhongtian Technology Fibre Optics Co.,Ltd,Nantong,Jiangsu 226009,China;Zhongtian Technology Marine Systems Co.,Ltd,Nantong,Jiangsu 226010,China)

机构地区：[1]南京邮电大学电子与光学工程学院、微电子学院,南京210023 [2]中天科技光纤有限公司,江苏南通226009 [3]中天海洋系统有限公司,江苏南通226010

出　　处：《光子学报》2021年第5期112-120,共9页Acta Photonica Sinica

基　　金：国家重点研发计划(No.2018YFC0308800)。

摘　　要：制备了一种外径远小于常规G.652光纤的大模场抗弯曲单模光纤。通过设计凹陷包层的预制棒结构,提高光缆光纤的抗弯曲性能,同时保持与G.652光纤相似的模场直径。测试结果显示光纤涂层外径为180μm、模场直径为9.1μm,且在7.5 mm半径单圈弯曲下,其宏弯损耗低于0.4 dB@1 550 nm,长期环境性能附加衰减不大于0.03 dB/km。利用这种新型光纤制备的光缆可节约44%的空间,能有效地铺设于拥挤和狭窄的通道中。In order to improve anti-bending property and keep the similar model field diameter of G 652,a single-mode,small-size,anti-bending fiber by designing the structure of the optical fiber preform with depressed cladding is proposed.The outer diameter of the fiber is 180μm,the mode field diameter reaches9.1μm,the macrobending loss of the fiber at 1550 nm is less than 0.4 dB and the long-term environmental performance is not larger than 0.03 dB/km.The cabling results show that the size of the cable can save44%by using this optical fiber.The optical fiber cable could be used for crowded and narrow channels.

关 键 词：单模光纤 弯曲损耗 小尺寸 抗弯曲 包层下陷 

分 类 号：TN253[电子电信—物理电子学]