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提出了一种新颖有效的光纤光栅带宽调谐方法。将光纤布拉格光栅斜向粘贴到矩形截面弹性梁的侧面上 ,通过调节弹性梁的曲率 ,实现了对光纤布拉格光栅的线性带宽调谐 ,调谐后的光纤光栅带宽可达 11.32nm ,中心波长的变化小于 0 .1nm。
A novel and effective fiber grating bandwidth tuning method is proposed. The fiber Bragg grating is obliquely pasted on the side of the rectangular cross-section elastic beam. By adjusting the curvature of the elastic beam, the linear bandwidth tuning of the fiber Bragg grating is achieved. The bandwidth of the fiber grating after tuning is up to 11.32 nm and the change of the center wavelength is less than 0 .1 nm.