Work

Pruned Volterra-Based Distortion Mitigation of High-Speed GaN Micro-LEDs for Energy-Efficient Optical Communication

Year: 2026

Type: article

Abstract: High-speed micro light-emitting diodes (LED) are attractive candidates for optical communications (OC) due to their wide bandwidth and energy efficiency. However, their strong nonlinear distortion severely degrades system performance. In this work, we present the first adaptation of the generalized memory polynomial model to micro-LED-based OC and propose a second distortion mitigation approach based on a novel pruned Volterra model. Training is performed using digital postdistortion, to be used as a predistorter for practical deployment. Experimental validation on galium nitride micro-LEDs driven by direct current-biased optical orthogonal frequency division multiplexing shows significant improvements, including a 71% throughput increase from 4.32 Gb/s to 7.35 Gb/s. These results demonstrate the strong potential of these compensation schemes to unlock energy-efficient, high-speed micro-LED optical links.

Source: Journal of Lightwave Technology

DOI: 10.1109/jlt.2026.3661625

Authors: Enzo Barzan, Luc Maret, Nicolas Delaunay, Mahmoud Chakaroun, Alexis P.A. Fischer

Institutions: Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Laboratoire d'Électronique des Technologies de l'Information, Centre National de la Recherche Scientifique, Université Sorbonne Paris Nord, Laboratoire de physique des lasers

Language: English

Topic: Optical Wireless Communication Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7128310020

FWCI: 1.409

Cites: 16

Cited by: 1

Related to: 10