3 papers
physics.optics2026
Stability of Orbital Angular Momentum Modes in Conventional and Ring-Core Optical Fibers
Hassan Asgharzadeh B., Regina Gumenyuk, Marco Ornigotti
Modal dynamics in multimode optical fibers are fundamentally governed by the inter- play between phase matching and intermodal coupling. In this work, we investigate the fundamenta…
physics.optics2025
High-purity amplification of circularly polarized orbital angular momentum modes in an active spun ring-core tapered fiber
Iuliia Zalesskaia, Hassan Asgharzadeh B., Zahra Eslami +9
Structured light, optical fields engineered in their spatial, polarization, or phase degrees of freedom, has become a key resource across advanced communication, sensing, imaging,…
physics.optics2025
Optical Vortex Dynamics in non-uniform twisted Ring-Core Fibers
Hassan Asgharzadeh B., Regina Gumenyuk, Marco Ornigotti
In this work, we present a thorough analysis of the propagation of fiber modes carrying orbital angular momentum in twisted, tapered, ring-core optical fibers. In particular, by ge…