多通道宽带光纤旋转连接器的实验研究  

Experimental study of multichannel and broadband fiber optic rotary joint

作　　者：郭强[1] 王廷云[1] 缪靖 张嘉毅[1] 朱秀英 

机构地区：[1]上海大学通信与信息工程学院特种光纤与光接入网省部共建国家重点实验室培育基地 [2]中国人民解放军96175部队 [3]长城钻探工程有限公司测井公司

出　　处：《光电子．激光》2015年第4期623-628,共6页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金项目(61227012);上海市重点攻关(13511500500);上海市特种光纤与光接入网重点实验室基金(SKLSFO2012-02)资助项目

摘　　要：针对光纤旋转连接器在轴向旋转光通信系统中的应用和技术特点,研制了一种基于Dove棱镜和光纤准直器的空分复用多通道宽带光纤旋转连接器。通过分析光信号在多通道宽带光纤旋转连接器中的光路和光程,得出了850、1 310和1 550nm 3波长光路传输时的出射偏移量,并据此设计Dove棱镜的几何尺寸和光纤准直器收发光路,使其达到宽带耦合最佳位置。实验结果表明,经由多通道宽带光纤旋转连接器传输的850~1550nm波长信号最大插入损耗为4.7dB,回波损耗为43.78dB。光纤旋转连接器在-40~70℃时的插入损耗最大变化值为2.0dB。将光纤旋转连接器接入传输速率为1.32Gbit/s的数字视频复用系统中,数字信号的丢帧率为0,以太网和视频指标均满足实际信号传输要求。Based on fiber optic rotary joint applications and its technical characteristics in axial rotation optical communication system,a multichannel broadband fiber optic rotary joint is proposed by using the Dove prism and fiber collimator. By analyzing the optical path in multichannel broadband fiber optic rota- ry joint,the different output signal offsets are obtained when the transmission wavelengths are 850 nm, 1310 nm and 1550 nm,respectively. So the Dove prism structure parameters and fiber collimator optical path can be designed to obtain the optimal broadband coupling efficiency. The experimental results show that the maximum insertion loss of the multichannel broadband fiber optic rotary joint is 4.7 dB in wave- length range of 850--1550 nm,and the return loss is 43.78 dB. The maximum variation of insertion loss is 2.0 dB in the temperature range of --40--70 ℃. The experimental results on digital video multiple- xing in 1.32 Gbit/s system have demonstrated that the frame loss rate is 0, and the transmission index of Ethernet and video is suitable for the requirements of the actual signals.

关 键 词：光纤旋转连接器 多通道 Dove棱镜 宽带 

分 类 号：TN929.11[电子电信—通信与信息系统]