PICO: Mitigating heterodyne crosstalk due to process variations and intermodulation effects in photonic NoCs
PICO: Mitigating heterodyne crosstalk due to process variations and intermodulation effects in photonic NoCs
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PICO：减轻光子 NoC 中由于工艺变化和互调效应造成的外差串扰
DOI：
10.1145/2897937.2898063
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
S. Pasricha
中科院分区：
文献类型：
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作者：
Sai Vineel Reddy Chittamuru;Ishan G. Thakkar;S. Pasricha
光子片上网络（PNoC）采用具有密集波分复用（DWDM）的光子波导进行信号遍历，并使用微谐振器（MR）进行信号调制，以实现高带宽的片上传输。不幸的是，DWDM增加了对互调效应的敏感性，这降低了光子数据传输的信噪比（SNR）。另外，工艺变化引起MR的宽度和厚度的变化，从而引起谐振波长偏移，这进一步降低SNR，并产生通信错误。本文提出了一种新的框架（称为皮科），以减轻外差串扰由于工艺的变化和PNoC架构中的互调效应。实验结果表明，我们的方法可以提高最坏情况下的信噪比高达4.4倍，并显着提高基于DWDM的PNoC架构的可靠性。
Photonic networks-on-chip (PNoCs) employ photonic waveguides with dense-wavelength-division-multiplexing (DWDM) for signal traversal and microring resonators (MRs) for signal modulation, to enable high bandwidth on-chip transfers. Unfortunately, DWDM increases susceptibility to intermodulation effects, which reduces signal-to-noise ratio (SNR) for photonic data transfers. Additionally, process variations induce variations in the width and thickness of MRs causing resonance wavelength shifts, which further reduces SNR, and creates communication errors. This paper proposes a novel framework (called PICO) for mitigating heterodyne crosstalk due to process variations and intermodulation effects in PNoC architectures. Experimental results indicate that our approach can improve the worst-case SNR by up to 4.4× and significantly enhance the reliability of DWDM-based PNoC architectures.