在载氢光纤上利用振幅掩模板来制作长周期光纤光栅 ,由于氢气的引入导致光纤光栅的热稳定性变差 ,这给制作符合要求的光纤光栅造成很大的困难。从理论和实验两个方面指出了在长周期光纤光栅的制作过程中若适当地降低长周期光纤光栅的含氢量 ,并灵活地运用均匀紫外曝光技术 ,能够明显地提高长周期光纤光栅的热稳定性 Long-period fiber gratings are fabricated on a hydrogen-carrying fiber by using an amplitude mask. Due to the introduction of hydrogen, thermal stability of the fiber gratings deteriorates, which causes great difficulties in fabricating a satisfactory fiber grating. It is pointed out theoretically and experimentally that if the content of hydrogen in long-period fiber grating is properly reduced and the uniform ultraviolet exposure technology is flexibly used in the fabrication of long-period fiber grating, the heat of long-period fiber grating can be obviously improved stability