Paper 14090-2
Paper 14090-2
feedback-controlled frequency comb generation in a quantum-dash laser
12 April 2026 • 14:20 - 14:40 CEST | Leicester/Salon 12 (Niveau/Level 1)
Abstract
In this work, we present a versatile and agile optical frequency comb source based on a semiconductor quantum-dash mode-locked laser dynamically controlled through phase-tuned optical feedback. By exploiting ultrashort optical feedback paths, we achieve control over the comb characteristics, enabling simultaneous spectral broadening and tunable control of the optical spectrum and repetition frequency. With this approach, we achieve significant spectral broadening (from 13 nm to 33 nm) and demonstrate dynamic tuning of the repetition rate over a range exceeding 200 MHz.
Presenter
Youcef Driouche
CNRS C2N, Université Paris-Saclay (France)
Kamel MERGHEM is an Associate Professor at Telecom SudParis, Institut Polytechnique de Paris. He received his M.S and PhD degrees from ‘Université des Sciences et Technologies de Lille’, in 2000 and 2011, respectively. He began his research career at the CNRS Laboratory for Photonics and Nanostructures, focusing on innovative photonics components for optical fiber telecommunication and data centers applications.
He has authored or co-authored more than 100 publications in peer-reviewed journals and international conferences. His current research interests include optical frequency combs for high-capacity optical transmission and photonic reservoir computing for optical signal processing.