A novel apodization technique of variable duty cycle for sampled grating
A novel apodization technique of variable duty cycle for sampled grating
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DOI：
10.1016/j.optcom.2003.08.012
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发表时间：
2003-10
影响因子：
2.4
通讯作者：
Xuhui Li;Xiangfei Chen;Yuzhe Yin;S. Xie
中科院分区：
文献类型：
--
作者：
Xuhui Li;Xiangfei Chen;Yuzhe Yin;S. Xie
本文首次提出了一种利用可变占空比的振幅掩模和相位掩模写入取样布拉格光栅的切趾技术。该技术只需一次曝光，而不是两次曝光，即可写入切趾取样布拉格光栅。数值模拟和实验结果表明，该技术可以有效地降低频谱反射中的旁瓣和群延迟纹波。
A novel apodization technique of writing a sampled Bragg grating is presented for the first time in the paper, which uses an amplitude mask with variable duty cycle and a phase mask. This technique only needs a one-process-exposure instead of two-process-exposure to write an apodized sampled Bragg grating. The numerical simulation has been implemented and the experimental results show that this technique is efficient in reducing the side lobes in the spectrum reflection and the group delay ripples.