大内径离轴光纤旋转连接器的设计与实现  

Design and realization of the off-axis fiber optic rotary joint with large inner diameter

作　　者：丁杰[1] 李毅[1,2] 王锋[1] 覃源[1] 梁倩[1] 严梦[1] 方宝英[1] 王晓华[1,3] 佟国香[1] 陈少娟[1] 陈建坤[1] 袁文瑞[1] 郑鸿柱[1] 

机构地区：[1]上海理工大学,上海200093 [2]上海市现代光学系统重点实验室,上海200093 [3]上海电力学院,上海200090

出　　处：《光电子．激光》2013年第11期2075-2080,共6页Journal of Optoelectronics·Laser

基　　金：国家"863"计划(2006AA03Z348);教育部科学技术研究(207033);上海市科学技术委员会科技攻关计划(06DZ11415);上海市教育委员会科技创新(10ZZ94);"区域光纤通信网与新型光通信系统国家重点实验室"开放基金;上海领军人才培养计划资助项目

摘　　要：为了实现旋转系统之间的光信号耦合,设计了一种新型的大内径离轴光纤旋转连接器。将光纤准直器和红外直角棱镜按照一定的规则排布在法兰盘上,使光信号能在较大离轴偏移量下保持持续传输状态。分析了影响离轴光信号传输耦合效率的主要因素,通过优化热扩芯光纤(TECF)准直器和红外直角棱镜进一步减小了离轴光纤旋转连接器的耦合损耗。研制的离轴光纤旋转连接器法兰盘内径为60mm,内外法兰盘上的TECF准直器分别为16和17个,并行光收发器实现串行光信号的收发。实验结果表明,本文的离轴光纤旋转连接器在60RPM的转速和1.25Gbit/s的光信号传输速率下最大插入损耗为21.73dB,可以满足旋转系统之间稳定传输光信号的要求。A new-type off-axis fiber optic rotary joint with large inner diamet er is designed to achieve the transmission of the optical signal between the rotary systems.The fiber collima tors and infrared right angle prisms are arranged in the flanges by a specific way,so that the optical sign al can be continuously transmitted in a larger off-axis offset.The main factors which affect the coupling efficiency o f the off-axis optical signal transmission are also analyzed.The coupling loss of the off-axis fiber optic r otary joint is further reduced by optimizing the thermally expanded core fiber collimator and the infrared right a ngle prism.The off-axis fiber optic rotary joint with the flange inner diameter of 60mm is fabricated,the numbers o f thermally expanded core fiber collimators on the inner and outer flanges are 16and 17,respectively,and the pa rallel optical transceivers are used to transmit and receive the serial optical signal.The experimental results of t he fiber optic rotary joint indicate that the maximum optical insertion loss of the off-axis fiber optic rotary joint is 21.73dB when the rotation rate of the flange is 60r/min and the signal transmission rate is 1.25Gbit/s,which can meet the requirement of stability for optical signal transmission between the ro tary systems.

关 键 词：光通信 离轴 光纤旋转连接器 热扩芯光纤(TECF) 红外直角棱镜 

分 类 号：TN253[电子电信—物理电子学]