Continuous Calibration of Microring Weights for Analog Optical Networks
Continuous Calibration of Microring Weights for Analog Optical Networks
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DOI：
10.1109/lpt.2016.2516440
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发表时间：
2016-04
影响因子：
2.6
通讯作者：
A. Tait;T. Ferreira de Lima;M. Nahmias;B. Shastri;P. Prucnal
中科院分区：
文献类型：
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作者：
A. Tait;T. Ferreira de Lima;M. Nahmias;B. Shastri;P. Prucnal
连续可配置的加权加法是多元模拟信号处理的关键功能。基于微环的加权加法的波分复用版本可以将光子集成、宽带光子信息处理和多波长网络的优势应用于超快模拟分布式处理的新方法。在这封信中，我们使用 5 GHz 信号实验性地演示了单通道功能，并使用前馈控制器和平衡检测技术在一组硅微环中显示了连续范围的互补 (+/-) 权重。显示了动态范围为 9.2 dB（即 3.1 位）的权重调整精度，并讨论了提高性能的步骤。更多微环配重和配重组的系统可以解决实时射频处理和高性能控制中迄今为止无法解决的问题。
Continuously configurable weighted addition is a key function for multivariate analog signal processing. The wavelength-division multiplexed version of weighted addition based on microrings can apply the strengths of photonic integration, wideband photonic information processing, and multiwavelength networks toward new approaches to ultrafast analog distributed processing. In this letter, we experimentally demonstrate single-channel functionality using a 5-GHz signal, showing a continuous range of complementary (+/-) weighting in a bank of silicon microrings using a feedforward controller and balanced detection technique. Weight tuning accuracy with a dynamic range of 9.2 dB (i.e., 3.1 bits) is shown, and steps to improve performance are discussed. Systems of more microring weights and weight banks could address hitherto unsolvable problems in real-time radio frequency processing and high-performance control.