Two kinds of tension in fiber Bragg gratings with cladding etched as the sinusoidal function  

作　　者：王国东 杨莹丽 

机构地区：[1]School of Electrical Engineering and Automation,Henan Polytechnic University [2]School of Computer Science and Technology,Henan Polytechnic University

出　　处：《Optoelectronics Letters》2010年第1期48-50,共3页光电子快报（英文版）

基　　金：supported by the Open Foundation for Henan Provincial Open Laboratory for Control Engineering Key Disciplines (No.KG2009-16);the Doctor Foundation for Henan Polytechnic University (No.648393)

摘　　要：A new grating structure with cladding etched as the sinusoidal function along the length direction is introduced. The cladding area of the grating varies as the sinusoidal function along fiber axes. The coupled mode theory is used to analyze its performance. Compared with the linearly chirped grating, the new structure exhibits an ideal box spectrum with steep edges when the tension is applied on the gratings in two different ways. For the type B grating, without tension after writing, it has a bigger bandwidth utilization (BWU) than that of the type A grating with tension after writing. Compared with the type A grating, the type B one is more adaptable in fiber-optic communications and sensor systems.A new grating structure with cladding etched as the sinusoidal function along the length direction is introduced. The cladding area of the grating varies as the sinusoidal function along fiber axes. The coupled mode theory is used to analyze its performance. Compared with the linearly chirped grating, the new structure exhibits an ideal box spectrum with steep edges when the tension is applied on the gratings in two different ways. For the type B grating, without tension after writing, it has a bigger bandwidth utilization （BWU） than that of the type A grating with tension after writing. Compared with the type A grating, the type B one is more adaptable in fiber-optic communications and sensor systems.

关 键 词：线性啁啾光栅 正弦函数 蚀刻 包层 纤维 光纤通讯 耦合模理论 带宽利用率 

分 类 号：TN253[电子电信—物理电子学] O174[理学—数学]