Delay-based reservoir computing for signal recovery in optical communication systems

IF 2.7 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-09-22 DOI:10.1016/j.yofte.2025.104395

Yunfan Zhang , Tiegen Liu , Jian Zhao , Tianhua Xu

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Abstract

Over the past few years, reservoir computing (RC) has garnered significant attention, with delay-based RC being proposed as a promising paradigm for realizing RC networks in hardware. In this paper, we have implemented and evaluated two major RC methods: one based on a Mach–Zehnder modulator and the other on a semiconductor laser with external injection and optical feedback. We conducted investigations to evaluate the capabilities of these methods in performing signal recovery tasks in an optical transmission system, which was also numerically simulated for various transmission scenarios. Specifically, the neighboring symbol pattern technique was introduced to enhance the chromatic dispersion compensation ability of these two RC methods. The results indicate that, despite their differing advantages, both methods can perform as well as classic digital signal processing (DSP) techniques, even for high modulation formats such as 16QAM, 64QAM, and 256QAM. This demonstrates their great potential as alternatives to traditional DSP approaches.

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光通信系统中基于延迟的信号恢复库计算

在过去的几年里，储层计算（RC）引起了人们的极大关注，基于延迟的RC被认为是在硬件上实现RC网络的一种很有前途的范例。在本文中，我们实现并评估了两种主要的RC方法：一种基于马赫-曾德尔调制器，另一种基于外注入和光反馈的半导体激光器。我们进行了调查，以评估这些方法在光传输系统中执行信号恢复任务的能力，并对各种传输场景进行了数值模拟。具体地说，引入了相邻符号模式技术来提高这两种RC方法的色散补偿能力。结果表明，尽管它们具有不同的优势，但这两种方法都可以像经典的数字信号处理（DSP）技术一样出色，甚至适用于高调制格式，如16QAM， 64QAM和256QAM。这证明了它们作为传统DSP方法替代品的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.