Add/drop channel filter based on two parallel long-period fiber gratings coupler
Add/drop channel filter based on two parallel long-period fiber gratings coupler
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DOI：
10.1016/j.ijleo.2008.02.026
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发表时间：
2009-11
期刊：
影响因子：
3.1
通讯作者：
Xiaowei Dong;S. Feng;Ou Xu;Shaohua Lu;L. Pei
中科院分区：
文献类型：
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作者：
Xiaowei Dong;S. Feng;Ou Xu;Shaohua Lu;L. Pei
研究了一种由两个平行的长周期光纤光栅构成的波长选择耦合器。数值计算和实验结果都表明，通过调节光栅的紫外折射调制和控制外部环境可以提高滤波器的响应。在不对两个光栅进行包层处理的情况下，实现了高效率、高光谱特性的分插通道滤波器。这一特点非常有利于简化制作工艺。
A wavelength-selective coupler constructed with two parallel long-period fiber gratings (LPFGs) was investigated thoroughly. Both the numerical and experimental results verified that the filter response could be improved by adjusting the UV refractive modulation of the gratings and by controlling the external surrounding. And an add/drop channel filter with high efficiency and good spectral characteristic was achieved even though the claddings of the two gratings were not processed. This feature is very favorable to simplify the fabrication process.