镀膜双包层螺旋长周期光纤光栅传感特性  

Sensing characteristics of coated double-cladding helical long-period fiber grating

作　　者：田丹丹 刘云启 TIAN Dandan;LIU Yunqi(School of Communication and Information Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学通信与信息工程学院,上海200444

出　　处：《光通信技术》2018年第10期49-51,共3页Optical Communication Technology

基　　金：国家自然科学基金(编号:61377083)资助

摘　　要：为了提高螺旋长周期光纤光栅(HLPG)的传感特性,采用原子层沉积法对双包层HLPG镀一层35nm厚的TiO_2薄膜来增强它的传感特性。实验结果表明:镀膜后的双包层HLPG具有较好的弯曲和扭转传感特性,其弯曲灵敏度和扭转灵敏度分别高达25.78nm/m^(-1)和0.28nm/rad·m^(-1)。In order to improving the sensing properties of helical long-period fiber grating（HLPG）, a thickness of 35nm TiO2 thin film is coated on the double-cladding HLPG by atomic layer deposition. The experimental results show that the coated double-cladding HLPG has good bending and torsion sensing properties, and the bending sensitivity and torsion sensitivity are as high as 25.78nm/m-1 and 0.28nm/rad. m-1 respectively.

关 键 词：镀膜螺旋长周期光纤光栅 双包层光纤 传感特性 

分 类 号：TN365[电子电信—物理电子学]