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physics.optics2026
Optical beam propagation inside a graded-index fiber with saturable nonlinearity
Tiyas Das, Anuj P. Lara, Samudra Roy +1
We study theoretically the spatial evolution of optical beams inside a graded-index fiber exhibiting saturable nonlinearity. Utilizing an approach based on the variational principl…
physics.optics2025
A comprehensive study on beam dynamics inside symmetrically chirped waveguide array mimicking the graded index media
Anuj P. Lara, Samudra Roy
In this article, we explore the beam dynamics within symmetrically chirped nonlinear waveguide arrays, focusing on linear and quadratic chirping schemes. We propose a practical str…
physics.optics2025
Bistable quartic soliton in saturable nonlinear media
Tiyas Das, Anuj Pratim Lara, Samudra Roy
This report presents a theoretical demonstration of a novel bistable quartic soliton (BQS) in saturable nonlinear media, specifically within a realistic dispersion-engineered ridge…