Apodized fiber Bragg gratings for DWDM applications using uniform phase mask
Apodized fiber Bragg gratings for DWDM applications using uniform phase mask
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DOI：
10.1109/ecoc.1998.732496
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发表时间：
1998-09
期刊：
影响因子：
--
通讯作者：
H. Singh;M. Zippin
中科院分区：
文献类型：
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作者：
H. Singh;M. Zippin
采用简单、均匀的非切趾相位掩模和两个空间强度成形滤波器，一次曝光写入切趾光纤光栅。从中心频带50 GHz处观察到25 dB的旁瓣抑制。我们提出了一种新的方法来制作具有恒定平均折射率的切趾光栅，保留了切趾光栅的所有优点，但以更简单的方式完成。此外，该方法是非常容易实现的，很容易以非常小的费用适用于不同的切趾，并很容易扩展到任何现有的相位掩模。
Apodized fiber Bragg gratings are written using a simple, uniform unapodized phase mask and two spatial intensity shaping filters and single exposure. Sidelobe suppression of 25 dB was observed 50 GHz from the center band. We present a novel approach to fabricating apodized gratings with constant average index that retains all the advantages of an apodized gratings, but is accomplished in a much simpler manner. Moreover the method is very easy to implement, lends itself easily to different apodizations with a very minimal expense and is readily expanded to any existing phase mask.