再生光纤布拉格光栅的研究进展

Review of Regenerated Fiber Bragg Grating

再生光纤布拉格光栅是通过对普通光纤布拉格光栅进行高温退火处理得到的一种耐高温光纤光栅,因其在高温下具有光栅光谱不衰退的特性,光纤光栅传感应用于高温环境成为可能。由于再生光纤光栅具有制作简单、成本低廉、传感性能良好等优势,国内外学者对再生光纤光栅的性能及其传感应用进行了大量的研究。从再生光纤光栅的形成机理、制作方法、特殊类型光栅再生以及光纤光栅机械强度保护4个方面对现阶段再生光纤光栅的研究进行总结、分析,并根据已经进行的研究内容对其高温传感应用进行了展望。

Regenerated fiber Bragg grating （RFBG） is prepared from an ordinary fiber Bragg grating （FBG） through a high temperature annealing process, which has a high temperature resistant. The RFBG can work under a high temperature environment since the grating degeneration does not exist in RFBG. RFBG has attracted much attention due to its easy fabrication process, low cost, and excellent sensing performance. We review the development of RFBG from formation mechanism, fabrication, regeneration of specific FBG, and mechanical strength protection and forecast the high temperature sensing applications of RFBG.