Paper 14090-8
Paper 14090-8
All-optical multiwavelength conversion over THz via laser-assisted cross-gain modulation in a multiwavelength laser
12 April 2026 • 16:30 - 16:50 CEST | Leicester/Salon 12 (Niveau/Level 1)
Abstract
All-optical wavelength conversion (AOWC) is a key functionality for flexible WDM networks. We demonstrate AOWC based on optical injection into a feedback-controlled InP multi-wavelength laser. The proposed laser-assisted cross-gain modulation (LA-XGM) mechanism enables direct data transfer between longitudinal modes through carrier competition in a shared quantum-well gain section. We achieve conversion of 10 GBd OOK signals over 1.3 THz shift with optical gain at low injection powers, and demonstrate reconfigurable conversion to three output channels. Simulations based on multimode Lang–Kobayashi equations support the experimental results.
Presenter
Vrije Universiteit Brussel (Belgium)
Pablo Marin-Palomo is a professor at the Faculty of Engineering of the Vrije Universiteit Brussel (VUB). Pablo received his B.S. degree in Physics in 2012 from the Universitat Autònoma de Barcelona (UAB), Spain, and obtained his master’s degree in Optics and Photonics in 2014 from the Karlsruhe Institute of Technology (KIT). He obtained his PhD in 2021 from KIT for his work on massively parallel coherent communications with integrated frequency comb sources. His research interests include nonlinear optics, frequency combs, photonic integration, and optical and THz communications.