【摘要】 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。更多还原

【Abstract】 A novel and efficient method for chirping fiber grating is demonstrated. The fiber Bragg grating was attached slantwis on a side face of a flexible beam. When the beam is bending, a strain gradient formed along the grating produces a variable shift in the Bragg spacing, resulting in a chirp up to 11.32nm nearly without central wavelength shift.更多还原