新型基于扭转应力的LPFGs可调谐滤波器设计  

Design of new tunable filter based on torsional stress of LPFGs

作　　者：杨真[1] 张跃进[2] 

机构地区：[1]华东交通大学现代教育技术中心,南昌330013 [2]华东交通大学信息工程学院,南昌330013

出　　处：《光通信技术》2014年第6期5-7,共3页Optical Communication Technology

基　　金：江西省科技厅自然科学青年基金项目(No.20122BAB211040)资助;华东交通大学校立科研课题(11XX03)资助

摘　　要：基于包层折射率调制的长周期光纤光栅的理论,对高频二氧化碳激光脉冲写制均匀折射率调制的长周期光纤光栅的方法进行研究。在理论分析和模型建立下,探索了光纤在扭转状态下,形成光纤光栅后的耦合特性。基于两段栅格周期满足特定条件的扭转应力释放后的级联型长周期光纤光栅,提出了新型的宽带可调谐滤波器。This paper studied the theory of LPFGs based on cladding refractive index modulation, and researched the method of LPFGs high-frequency CO2 laser with pulses of uniform refractive index modulation. In the establishment of the theoretical analysis and model, the paper explored the fiber in the torsional condition, formed the coupling characteristics of fiber Bragg grating. For LPFGs torsion cascaded to meet certain conditions after stress based on two grid cycle, the paper proposed a novel broadband tunable filter.

关 键 词：长周期光纤光栅 耦合模理论 扭转应力 调谐滤波器 

分 类 号：TN713[电子电信—电路与系统]