使用高频CO2激光器一次写入长周期光纤光栅的方法  

Method of One-Time Writing LPFG Using High-Frequency CO_2 Laser

作　　者：梁丽丽[1] 刘明生[1] 李燕[2] 李国玉[2] 杨康[2] 

机构地区：[1]河北工业大学信息工程学院,天津300401 [2]邯郸学院信息技术研究所,河北邯郸056005

出　　处：《激光与光电子学进展》2013年第9期16-18,共3页Laser & Optoelectronics Progress

基　　金：河北省应用基础研究计划重点基础研究项目(13960306D);邯郸市科学技术研究与发展计划项目(1220103080)

摘　　要：一次写入长周期光纤光栅提高了写制的效率,解决了多次写入不重合的问题,具有重要的研究价值。经大量的实验研究发现,在适当的应力和能量辐射情况下,纤芯和包层发生有效折射率周期性调制和适当的物理形变,利用高频CO2激光器可以在普通单模光纤上一次成功写入长周期光纤光栅。实验结果表明,一次写入的长周期光纤光栅比多次写入的光栅透射谱特性好。The experiment of one-time writing long period fiber grating is performed. It not only improves the efficiency of fiber writing process, but also solves the problem of multisession mismatching. So it has important research value. From the experiment, we find that effective refractive index periodical modulation and appropriate physical deformation occur in the fiber core and cladding under appropriate pressure and radiation, and the LPFG is one-time written successfully using high-frequency CO2 laser in single-mode fiber. Experimental results show that the grating transmission spectrum features in one-time writing process are better than that in multiple writing process.

关 键 词：激光器 高频CO2激光器 长周期光纤光栅 一次写入 轴向应力 能量辐射 

分 类 号：TN249[电子电信—物理电子学]