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报道一种新颖的用于多波长光纤激光器的超结构光纤Bragg光栅 (SFBG)梳状滤波器 ,其突出特点是仅由单个光栅构成、折射率调制和局部啁啾富于变化、反射峰均匀性好、窄带宽和标准的信道间隔 .采用基于LP算法的IS光纤光栅设计技术 ,将整体加窗切趾法改进为各信道独立加窗切趾 ,成功地设计出所需的SFBG ,同时对SFBG的制作技术也进行了探讨 .用传输矩阵法分析反射谱、时延曲线和群时延抖动 .结果表明 ,所设计的SFBG满足各项设计指标要求 ,在DWDM系统中 ,这种新颖的SFBG可望成为用于多波长光纤激光器的最理想的高性能梳状滤波器
A novel super-structured fiber Bragg grating (SFBG) comb filter for multi-wavelength fiber lasers has been reported. Its prominent feature is that it consists of only a single grating, the refractive index modulation and the local chirp are quite varied, and the reflection peak uniformity Good, narrow bandwidth and standard channel spacing.Adopting the IS fiber grating design technology based on LP algorithm, the overall window-to-toe method is improved to the independent windowed apodization of each channel, and the desired SFBG is successfully designed, and the SFBG The transmission matrix method is also used to analyze the reflection spectrum, the delay curve and the group delay jitter. The results show that the designed SFBG meets the requirements of each design index. In the DWDM system, this novel SFBG Look forward to becoming the ideal high-performance comb filter for multi-wavelength fiber lasers