All-Optical Analog-to-Digital Conversion Using Split-and-Delay Technique
All-Optical Analog-to-Digital Conversion Using Split-and-Delay Technique
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DOI：
10.1109/jlt.2007.895534
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发表时间：
2007-06
影响因子：
4.7
通讯作者：
Y. Miyoshi;K. Ikeda;T. Tobioka;T. Inoue;S. Namiki
中科院分区：
文献类型：
--
作者：
Y. Miyoshi;K. Ikeda;T. Tobioka;T. Inoue;S. Namiki
提出了一种基于非线性光学环路镜的全光A/D转换器的简化结构。虽然这种全光A/D转换的传统方案需要编码器和阈值，位分辨率，所提出的配置实现了位分辨率只使用一个单一的编码器和阈值，基于分裂和延迟技术，其中编码器和阈值操作超过倍的采样速度一样快。在讨论了基于NOLM的编码器的详细设计问题后，特别强调了所谓的反向传播效应，使用所提出的配置实验演示了10 GS/s的全光3位A/D转换。
We propose a simplified configuration of all-optical analog-to-digital (A/D) conversion using nonlinear optical loop mirrors (NOLMs). While the conventional scheme of such all-optical A/D conversion requires encoders and threshold, for -bit resolution, the proposed configuration realizes an -bit resolution only using a single encoder and threshold, based on a split-and-delay technique, in which the encoder and the threshold operate more than times as fast as the sampling speed. After discussing detailed design issues of the NOLM-based encoder with particular emphasis on the so-called counterpropagating effects, all-optical 3-bit A/D conversion at 10 GS/s is experimentally demonstrated using the proposed configuration.