【摘要】 使用均匀相位模板和 2 4 4nm倍频氩离子连续激光器 ,采用扫描写入法 ,制作了啁啾和切趾函数可调的光纤光栅。扫描器由微机控制 ,通过软件编程可动态调整扫描速度及曝光量 ,操作简便、调整的灵活余地大。已在载氢的标准单模光纤上制作出了具有高反射率、高边模抑制比、平顶和不同带宽要求的光纤光栅。更多还原

【Abstract】 This paper presents a novel method for fabricating the apodized and chirped fiber Bragg gratings with their parameters adjustable during the fabrication. In this method a CW frequency-doubled argon-ion laser operating at 244 nm, uniform phase masks and a reflection mirror mounted on a computer-controlled translation stage are used, which enables to change the scanning velocities of the UV beam by programming. The system is easy to operate and flexible to adjust. As a result, various fiber Bragg gratings with high reflectivity, high side mode suppression ration(SMSR), flatten-top and variable bandwidth have been fabricated in the conventional single-mode fiber with hydrogen loading.更多还原