Dostovalov A V, Wolf A A, Parygin A V, Zyubin V E, Babin S A
Opt Express. 2016 Jul 25;24(15):16232-7. doi: 10.1364/OE.24.016232.
A ferrule-based method of direct fs FBG inscription through protective plastic coating is demonstrated. Fluctuations of fiber core position relative to the writing fs beam are compensated by the developed auto-alignment system. As a result, high-quality FBGs with length from 0.1 to 50 mm are fabricated in polyimide-coated fibers, whose spectra are well described by the theory. The fabricated FBGs have great potential in sensor applications at high temperature and harsh environments both point-action and distributed ones.
展示了一种基于套圈的通过保护塑料涂层直接写入飞秒光纤光栅的方法。所开发的自动对准系统补偿了光纤纤芯相对于写入飞秒光束的位置波动。结果，在聚酰亚胺涂层光纤中制备出了长度从0.1到50毫米的高质量光纤光栅，其光谱与理论相符。所制备的光纤光栅在高温和恶劣环境下的点式和分布式传感器应用中具有巨大潜力。
