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Demonstrating delay-based reservoir computing using a compact photonic integrated chip.
Optics Express ( IF 3.8 ) Pub Date : 2020-02-03 , DOI: 10.1364/oe.382556
Krishan Harkhoe , Guy Verschaffelt , Andrew Katumba , Peter Bienstman , Guy Van der Sande

Photonic delay-based reservoir computing (RC) has gained considerable attention lately, as it allows for simple technological implementations of the RC concept that can operate at high speed. In this paper, we discuss a practical, compact and robust implementation of photonic delay-based RC, by integrating a laser and a 5.4 cm delay line on an InP photonic integrated circuit. We demonstrate the operation of this chip with 23 nodes at a speed of 0.87 GSa/s, showing performances that is similar to previous non-integrated delay-based setups. We also investigate two other post-processing methods to obtain more nodes in the output layer. We show that these methods improve the performance drastically, without compromising the computation speed.

中文翻译:

演示使用紧凑型光子集成芯片的基于延迟的储层计算。

基于光子延迟的储层计算(RC)最近获得了相当大的关注,因为它允许RC概念的简单技术实现,并且可以高速运行。在本文中,我们通过在InP光子集成电路上集成激光器和5.4厘米的延迟线,讨论了基于光子延迟的RC的实用,紧凑和强大的实现。我们以0.87 GSa / s的速度演示了该芯片在23个节点上的运行情况,其性能与以前基于延迟的非集成设置相似。我们还将研究其他两种后处理方法,以在输出层中获取更多节点。我们证明了这些方法可以在不影响计算速度的情况下极大地提高性能。
更新日期:2020-02-03
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