摘要
介绍了全光纤熔融拉锥型3 dB宽带耦合器的理论设计,根据理论设计制作了样品。应用耦合模理论分析了全光纤非对称熔融拉锥型耦合器的宽带特性;提出了3 dB宽带耦合器的制作方案,在此基础上制作了样品;对样品进行测试,样品带宽大约为300 nm(在1300 nm^1600 nm波长之间),附加损耗小于0.5 dB,完全达到了实用化的要求。
3 dB wide band coupler is a passive device widely used in optical fiber communication system, optical fiber sensor, optical fiber measurement technology and signal processing system. A fiber fused biconical taper （FBT） 3dB wide band coupler was designed and some samples were manufactured. The bandwidth characteristics of asymmetric FBT coupler were analyzed by coupled-mode equation. The bandwidth of the wide band coupler is about 300 nm （between 1 300 nm and 1 600 nm）, while its excess loss is less than 0.5 dB.
出处
《应用光学》
CAS
CSCD
2007年第6期793-796,共4页
Journal of Applied Optics
基金
中央民族大学"青年教师科研基金"资助项目(CUN36A)
关键词
无源器件
宽带耦合器
熔融拉锥
耦合模理论
passive device
wide band coupler
fused biconical taper
theory of coupled-mode
