Optical all-pass filters for phase response design with applications for dispersion compensation
Optical all-pass filters for phase response design with applications for dispersion compensation
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DOI：
10.1109/68.681295
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发表时间：
1998-07-01
影响因子：
2.6
通讯作者：
Lenz, G
中科院分区：
文献类型：
--
作者：
Madsen, CK;Lenz, G
介绍了无损全通滤光片，它可以近似任何所需的相位响应，同时保持恒定，统一的幅度响应。讨论了基于环形谐振器和由反射器定义的空腔的级联和点阵结构。提出了两种应用：1)光纤色散补偿和2)窄带通滤光片（如薄膜或布拉格光栅滤光片）的非线性相位响应补偿。原则上，所有阶的色散都可以补偿，并且滤波器是周期性的，因此可以用单个器件补偿多个通道。与啁啾布拉格光栅等替代方案相比，该体系结构非常紧凑。
Lossless all-pass optical filters are introduced, which can approximate any desired phase response while maintaining a constant, unity amplitude response. Architectures using cascade and lattice structures based on ring resonators and cavities defined by reflectors are discussed. Two applications are presented: 1) for fiber dispersion compensation and 2) for compensation of the nonlinear phase response of narrow bandpass optical filters such as thin-film or Bragg grating filters. All orders of dispersion can be compensated in principle, and the filters are periodic so multiple channels can be compensated with a single device. The architectures are very compact compared to alternatives such as chirped Bragg gratings.