☆ 4.7 Article

Dispersion-Managed Fiber Echo State Network Analogue With High (Including THz) Bandwidth

JOURNAL OF LIGHTWAVE TECHNOLOGY (2020)

Journal

JOURNAL OF LIGHTWAVE TECHNOLOGY

Volume 38, Issue 12, Pages 3209-3213

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

DOI: 10.1109/JLT.2020.2996311

Keywords

Optical attenuators; Optical distortion; Dispersion; Bandwidth; Optical mixing; Optical pumping; Neuromorphic computing; optical communica-tions; signal processing

Categories

Engineering, Electrical & Electronic Optics Telecommunications

Funding

Royal Academy of Engineering Research Fellowship [RF/201718\17154]

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Abstract

We propose a design for high (including THz) bandwidth neuromorphic signal processing based on fiber echo state network analogue and demonstrate through numerical modeling its efficiency for distortion mitigation in optical communications with high-order (including 1024-QAM) formats. This is achieved via all-optical implementation of masking and neural functionality by utilizing dispersion and nonlinear properties of the fiber. The design is flexible and format-transparent making it relevant for future communication systems. The model is simple to implement, as it requires only two attenuators and pumps in addition to a traditional nonlinear optical loop mirror (NOLM), and offers a vast range of optimization parameters.

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