Advances in the design and fabrication of high-channel-count fiber Bragg gratings
Advances in the design and fabrication of high-channel-count fiber Bragg gratings
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DOI：
10.1109/jlt.2007.903306
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发表时间：
2007-09-01
影响因子：
4.7
通讯作者：
Rothenberg, Joshua E.
中科院分区：
文献类型：
--
作者：
Li, Hongpu;Li, Ming;Rothenberg, Joshua E.
本文综述了近年来我们在高通道数光纤布拉格光栅（FBG）设计和制作技术方面的研究进展。本文提出了纯相位取样光纤光栅的理论，并证明了N个通道的取样光纤光栅所需的最大反射率调制比单通道光纤光栅的最大反射率调制高N/eta倍。实验上，我们用一种新型的衍射预补偿相位掩模制作了45和81通道线性啁啾光纤光栅，用于几乎整个C波段的色散补偿。所得到的光栅性能指标与理论设计结果吻合较好。本文提出了一种新的多通道FBG设计方法，使我们能够设计任何类型的多通道FBG，其中每个通道的光谱响应可以是相同的或不相同的。特别是，九通道非线性啁啾光纤光栅，这是作为一个同时色散和色散斜率补偿器，已被证明。
In this paper, we review our recent developments in the design and fabrication techniques for 'high-channel-count fiber Bragg gratings (FBGs). We have presented a theory for the phase-only sampled FBG and demonstrated that a sampled FBG of N channels would require root N/eta times higher maximum reflective index modulation than that of the single-channel FBG. We experimentally demonstrate a 45- and 81-channel linearly chirped FBG for nearly whole C-band dispersion compensation, which is fabricated with a novel diffraction precompensated phase mask. The grating specifications obtained agree well with the theoretical design. We have presented a novel method for multichannel FBG design, which enables us to design any kind of multichannel FBGs, where the spectrum response of each channel could be either identical or nonidentical. Particularly, the nine-channel nonlinearly chirped FBG, which is used as a simultaneous dispersion and dispersion slope compensator, has been demonstrated.