Paper 14090-7
Paper 14090-7
Nanosecond wavelength switching in integrated feedback-controlled multiwavelength lasers
12 April 2026 • 16:10 - 16:30 CEST | Leicester/Salon 12 (Niveau/Level 1)
Abstract
We demonstrate nanosecond-scale discrete wavelength switching in dual-wavelength lasers monolithically integrated on InP with an electro-optically phase-controlled feedback cavity. Experimentally, transition times as short as 1.24 ns are achieved, with faster switching for stronger optical feedback and larger modulation amplitudes, and minimal sensitivity to gain differences. Using a multi-mode Lang–Kobayashi model, simulations confirm these trends, clarify the role of the mode-coupling parameter, and reveal trade-offs between switching speed and side-mode suppression. These results highlight the potential of integrated multi-wavelength lasers for compact, high-speed all-optical switching.
Presenter
Vrije Univ Brussel (Belgium)
Martin Virte is a professor with the Brussels Photonics (B-PHOT) group of the Vrije Universiteit Brussel (VUB). He graduated as an engineer from the French “Grande Ecole” Supélec (now CentraleSupélec, France) in 2011. He then received his PhD in engineering in 2014 with the highest honours from the Vrije Universiteit Brussels (VUB, Brussels, Belgium) and Supélec as part of a joint PhD program. In 2015, he received a 3-year post-doctoral fellowship from the Research Foundation – Flanders (FWO) to pursue his research work at VUB. In 2020, he received a prestigious Starting Grant from the European Research Council (ERC) to explore how multi-wavelength lasers can be exploited for all-optical signal processing of mm-wave and THz signal. He became professor at the Vrije Universiteit Brussel the same year.