Physics-based multistep beam propagation in inhomogeneous birefringent mediaPoy, Guilhem (Avtor) Žumer, Slobodan (Avtor) opticsWe present a unified theoretical framework for paraxial and wide-angle beam propagation methods in inhomogeneous birefringent media based on a minimal set of physical assumptions. The advantage of our schemes is that they are based on differential operators with a clear physical interpretation and easy numerical implementation based on sparse matrices. We demonstrate the validity of our schemes on three simple two-dimensional birefringent systems and introduce an example of application on complex three- imensional systems by showing that topological solitons in frustrated cholesteric liquid-crystals can be used as light waveguides.20202020-08-03 12:00:31Članek v reviji117981UDK: 535ISSN pri članku: 1094-4087DOI: 10.1364/OE.400984COBISS_ID: 24244739OceCobissID: 8636438slV članku navedeno: "© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement"; s povezavo https://www.osapublishing.org/library/license_v1.cfm. (3. 3. 2021)