An analysis of spectral response apodization by duty cycle methods for grating-assisted optical filters is presented. The study is performed for the case of codirectional couplers, Bragg reflectors, and mirrors. The modeling results show that the supersymmetric duty cycle (SDC) modulation method, initially considered for parity–time symmetric gratings in Lupu et al. [IEEE J. Sel. Top. Quantum Electron. 22, 35 (2016) [CrossRef] ], performs better than the other methods. An analytical approach to the transfer matrix of the modulated grating explains the better performance of the SDC method.

中文翻译：

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布拉格光栅的占空比变化方法：比较研究和优化设计

介绍了光栅辅助滤光器的占空比方法的光谱响应切趾分析。该研究针对同向耦合器、布拉格反射器和反射镜进行。建模结果表明，超对称占空比 (SDC) 调制方法最初被考虑用于 Lupu等人的奇偶时间对称光栅。[IEEE J. Sel. 最佳。量子电子。22 , 35 (2016) [CrossRef] ]，性能优于其他方法。调制光栅传输矩阵的分析方法解释了 SDC 方法的更好性能。