油藏计算
光子学
低语长廊波浪
光子晶体
材料科学
光学
谐振器
干扰(通信)
微球
信号(编程语言)
非线性系统
频道(广播)
光电子学
计算机科学
物理
电信
工程类
量子力学
程序设计语言
机器学习
化学工程
循环神经网络
人工神经网络
作者
Junwei Xu,Tong Zhao,Pengfa Chang,C.-L. Wang,Anbang Wang
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-06-30
卷期号:48 (14): 3653-3653
摘要
We experimentally demonstrate a photonic reservoir computing (RC) system using a passive silica microsphere cavity. The microsphere cavity exhibits a consistent nonlinear response to the non-return-to-zero signal and the multiple-level signal due to strong interference between numerous whispering gallery modes in the “over-coupling” state. Benefiting from the fact that the long photon lifetime inside the microsphere cavity provides a memory of past inputs, this photonic reservoir does not require a delayed feedback loop. We evaluate the generalization property of the RC system and obtain a correlation coefficient of 0.923. In addition, we obtain a NMSE of 0.06 for the Santa-Fe chaotic time series prediction task and a SER of 0.02 at a SNR of 12 dB for the nonlinear channel equalization task. Moreover, a microsphere cavity with a higher quality factor can provide a larger memory capacity. The application of the silica microsphere cavity as a small-volume passive device in a reservoir furnishes a new avenue for achieving a low-consumption and integrated RC system.
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