1×7锥形混合棒塑料光纤耦合器  

1×7 Tapered Mixing-rod POF Coupler

作　　者：夏可宇[1] 于荣金[1] 孟华茂[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《光子学报》2004年第8期908-911,共4页Acta Photonica Sinica

基　　金：河北省科委攻关项目 (992 135 6 7D);国家自然科学基金(6 0 2 770 0 7)资助项目

摘　　要：利用光线追迹法进行数值仿真得到了锥形混合棒塑料光纤耦合器的分光比与其长度的关系 .数值仿真表明 :这种耦合器的分光比随锥形光波导长度增加 ,在 0 .14 3(即均分处 )上下呈振荡型变化 .选择一均分且分光比变化平缓的区域作为制作光波导的长度 ,通过拉伸粗的光波导棒成锥形且达到所需的长度 ,并采用精密的机械连接 ,制作出了 1× 7塑料光纤耦合器 .测试数据表明 :这种塑料光纤耦合器具有很高的均匀性 .The relation between coupling ratio of 1×7 tapered mixing-rod POF couplers and the length of tapered rod waveguides through numerical simulation by ray tracing method is given. The simulated results show that the coupling ratio oscillates around the uniform splitting point of 0.143 with the tapered rod waveguide length increasing. The coupling ratio is uniform and varies slowly when the tapered rod waveguide length lies in the region 2.4±0.1 cm. Some 1×7 POF couplers was made through stretching the big diameter rod waveguides to a demanded size and using exact machine conjunctions. The measured data shows that this kind of POF coupler has not only small size,but also good uniformity.

关 键 词：光线追迹法 耦合器 分光比 均匀性 塑料光纤 

分 类 号：TN929.11[电子电信—通信与信息系统]