面向通感一体系统的耐弯三芯光纤  

Bending-resistant three-core optical fiber used for communication and sensing integrated system

作　　者：张泽霖 秦钰 周慧 许维维 蒋新力 马麟[4] 沈一春 肖力敏 ZHANG Zelin;QIN Yu;ZHOU Hui;XU Weiwei;JIANG Xinli;MA Lin;SHEN Yichun;XIAO Limin(Zhongtian Technology Advanced Materials Co.,Ltd.,Nantong Jiangsu 226009,China;School of Information Science and Technology,Fudan University,Shanghai 200433,China;Zhongtian Technology Group Co.,Ltd.,Nantong Jiangsu 226463,China;State Key Laboratory of Advanced Optical Communication Systems and Networks,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]中天科技精密材料有限公司,江苏南通226009 [2]复旦大学信息科学与工程学院,上海200433 [3]中天科技集团有限公司,江苏南通226463 [4]上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海200240

出　　处：《光通信技术》2024年第1期80-84,共5页Optical Communication Technology

摘　　要：为了同时兼顾狭小空间下的光纤数据通信与环境感知,设计并制备了一种面向通感一体系统的耐弯三芯光纤。该光纤采用三角形纤芯排布和深掺氟折射率沟道结构,标准外径为125μm,优化了O波段(1260~1360 nm)的传输特性,具有与G.657.A1光纤相似的布里渊增益谱(BGS)分布。测试结果表明:在1310 nm波长处,芯层的平均损耗为0.58 dB/km,平均芯间串扰低于-50 dB/km;当最小弯曲半径R=10 mm且缠绕50圈时,光纤的弯曲损耗低于0.1 dB。In order to take into account both optical fiber data communication and environment perception in a narrow space,a flexural three-core optical fiber is designed and prepared for the integrated system.The fiber has a triangular core arrangement and a deeply fluorine-doped refractive index channel structure with a standard outer diameter of 125μm.The transmission characteristics of the O-band(1260~1360 nm)are optimized,and the Brillouin gain spectrum(BGS)distribution is similar to that of the G.657.A1 optical fiber.The test results show that the average loss of the core layer is 0.58 dB/km at 1310 nm wavelength,and the average intercore crosstalk is lower than-50 dB/km.When the minimum bending radius R=10 mm and winding 50 times,the bending loss of the optical fiber is less than 0.1 dB.

关 键 词：三芯光纤 弯曲损耗 受激布里渊散射 快速测量 数据通信 

分 类 号：TN914[电子电信—通信与信息系统] TN252[电子电信—信息与通信工程]