Beating Nyquist with light: a compressively sampled photonic link
Beating Nyquist with light: a compressively sampled photonic link
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DOI：
10.1364/oe.19.007339
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发表时间：
2011-04-11
期刊：
影响因子：
3.8
通讯作者：
Bucholtz, F.
中科院分区：
文献类型：
--
作者：
Nichols, J. M.;Bucholtz, F.
我们报告的压缩采样光子链路的成功演示。该系统利用压缩采样的最新理论发展，使信号恢复超过奈奎斯特限制的数字化。这个相当显著的结果要求（1）被恢复的信号具有稀疏（低维）表示，以及（2）数字化样本与该表示不相干。我们描述了一个全光子系统架构，满足这些要求，然后表明，1GHz的谐波信号可以忠实地重建，即使在500 MS/s，远低于奈奎斯特速率的数字化。(C)2011年美国光学学会
We report the successful demonstration of a compressively sampled photonic link. The system takes advantage of recent theoretical developments in compressive sampling to enable signal recovery beyond the Nyquist limit of the digitizer. This rather remarkable result requires that (1) the signal being recovered has a sparse (low-dimensional) representation and (2) the digitized samples be incoherent with this representation. We describe an all-photonic system architecture that meets these requirements and then show that 1GHz harmonic signals can be faithfully reconstructed even when digitizing at 500MS/s, well below the Nyquist rate. (C) 2011 Optical Society of America