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本文报道了一种改变光纤光栅布喇格波长的有效方法．写于我氢光纤上的光纤光栅经过高温退火后，再利用紫外激光对其进行均匀曝光，不但能够有效改变其布喇格波长，而且还可以提高其反射效率．此种方法能很好地解决光纤光栅制作过程中的工作波长控制问题．
This paper reports an effective method to change the Bragg wavelength of fiber grating. The optical fiber grating written on the hydrogen fiber is annealed at high temperature and then uniformly exposed by UV laser to not only effectively change its Bragg wavelength, but also improve its reflection efficiency. This method can well solve the working wavelength control problem in the process of fabricating optical fiber grating.