3 papers
physics.optics2026
Accuracy assessment of scalar wave propagation methods for diffractive optics design: from thin elements to thick binary grating
Nicolas Barré
We present a systematic accuracy assessment of the thin-element approximation (TEA), the beam propagation method (BPM), and the wave propagation method (WPM) for binary diffractive…
physics.optics2026
Maximally localized modes of a multimode fiber
Nicolas Barré
This article presents an optimization method to find the most spatially concentrated basis of a multimode fiber, obtained by minimizing the sum of the spatial spreads of the indivi…
physics.optics2026
Inverse design of a spatial demultiplexer for free-space optical communications: direct optimization over turbulence statistics
Nicolas Barré
Atmospheric turbulence severely limits the coupling of received optical wavefronts into single-mode fibers in satellite-to-ground free-space optical links. Spatial demultiplexing r…