Paper 14090-15
Paper 14090-15
Modelling and analysis of semiconductor lasers subject to fibre Bragg grating feedback
13 April 2026 • 14:00 - 14:20 CEST | Leicester/Salon 12 (Niveau/Level 1)
Abstract
The Lang-Kobayashi equations are the standard tool for modelling lasers subject to external feedback from a regular mirror. When the feedback comes from a fibre Bragg grating (FBG), present modelling requires a computationally expensive convolution term, which provides limited analytical insight into the system’s behaviour. We present a novel modelling approach that approximates FBG feedback using discrete delay terms, avoiding the need for numerical convolution while preserving the essential physics. This enables analysis of mode structure and solution stability, providing a bridge between numerical simulation and analytical understanding.
Presenter
Joe Steele
The Univ. of Auckland (New Zealand), The Dodd-Walls Ctr. for Photonic and Quantum Technologies (New Zealand)
Joe Steele is a PhD student in applied mathematics at the University of Auckland, studying nonlinear dynamical systems applied to semiconductor lasers subject to optical feedback. He received a Master of Research while at the Tyndall National Institute, where he worked in the Advanced RF Technologies group, following his undergraduate degree in applied mathematics and physics from University College Cork.