Optimization of a continuous phase-only sampling for high channel-count fiber Bragg gratings.
Optimization of a continuous phase-only sampling for high channel-count fiber Bragg gratings.
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DOI：
10.1364/oe.14.003152
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发表时间：
2006-04
期刊：
影响因子：
3.8
通讯作者：
Hongpu Li;Ming Li;K. Ogusu;Y. Sheng;J. Rothenberg
中科院分区：
文献类型：
--
作者：
Hongpu Li;Ming Li;K. Ogusu;Y. Sheng;J. Rothenberg
提出了一种新的连续纯相位采样函数，该函数能产生多达81通道的光纤光栅，具有良好的通道均匀性和高带内能量效率，并利用模拟退火算法对其进行了优化。为了用传统的侧写相位掩模技术制作这种光纤光栅，还研究了移相相位掩模的衍射效应和制作公差。与数值结果比较，成功地演示了45通道（间隔100 GHz）和81通道（间隔50 GHz）的纯相位采样线性啁啾光纤光栅。
A novel continuous phase-only sampling function capable of producing up to 81-channel FBG with excellent channel uniformity and high in-band energy efficiency is presented and optimized by using the simulated annealing algorithm. In order to fabricate this kind of FBG with a conventional side-writing phase-mask technique, both the diffraction effects and fabrication tolerance of the phase-shifted phase mask have also been addressed. Compared with the numerical results, a 45-channel (spacing 100 GHz) and an 81-channel (spacing of 50 GHz) phase-only sampled linearly chirped FBG are successfully demonstrated.