Paper 14092-27
Paper 14092-27
Design of an all-normal dispersion photonic crystal fiber for stable and coherent supercontinuum generation
14 April 2026 • 15:00 - 15:20 CEST | Churchill (Niveau/Level 1)
Abstract
We demonstrate a novel polarization-maintaining all-normal dispersion photonic crystal fiber (PM-ANDi PCF) engineered for femtosecond pumping at 1030 nm, enabling ultra-stable and highly coherent supercontinuum generation from 650 to 1300 nm. Polarization control is achieved through an innovative two-hole design that replaces traditional stress rods, offering simplicity and robustness. Numerical and experimental studies reveal excellent noise performance, with relative intensity noise below 0.5% and phase fluctuations under 15 mrad. This new PM fiber platform provides a powerful tool for ultrafast metrology, coherent optical synthesis, and broadband light sources requiring exceptional stability and polarization control.
Presenter
Romain Morel
Université Marie et Louis Pasteur, CNRS, Institut FEMTO-ST (France)
Romain Morel is a second-year Ph.D. student at Université Marie et Louis Pasteur and the CNRS FEMTO-ST Institute in Besançon, France. His research focuses on low-noise supercontinuum generation for ultrafast laser applications within the framework of the European project VISUAL. He graduated in 2024 from Télécom Saint-Étienne, an engineering school specializing in optics and photonics. During his studies, Romain completed an internship at the National Science Platform FOTONIKA-LV in Riga, contributing to the operation of satellite laser ranging systems, and studied at Politecnico di Milano through the Erasmus+ program, where he took advanced courses in nonlinear optics. Before beginning his Ph.D., he carried out a six-month internship at CEA Grenoble on Brillouin micro-spectroscopy.