activity
20232026
most citedRadiation families emitted by a discrete soliton in parity-time-symmetric waveguide arrays

4 citations · 5 across the 7 of their papers we have counts for

collaborators

8 papers

physics.optics2026

Static and breathing dynamics of optical bullets in nonlinear GRIN fibers

Sonali Maity, Tiyas Das, Anuj P. Lara +2

We explore the properties of spatiotemporal solitons within nonlinear graded-index (GRIN) optical fibers, specifically addressing their formation, stability, and breathing dynamics…

physics.optics2026

Robust bistable vortex light bullets in graded-index multimode fibers

Ashis Paul, Anuj P. Lara, Govind P. Agrawal +1

We explore theoretically the formation and evolution of spatiotemporal vortex bullets, pulses confined in both space and time while carrying orbital angular momentum, inside a grad…

nlin.PS2026

Nondegenerate bright solitons and their interactions in the generalized coupled nonlinear Schroedinger system

R. Ramakrishnan, Samudra Roy, S. Stalin +1

It is known that the generalized coupled nonlinear Schroedinger (GCNLS) equations can be reduced to the basic vector nonlinear Schroedinger models through various symmetry reductio…

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

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…

physics.optics2025★ 1 cited

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.optics2023★ 4 cited

Radiation families emitted by a discrete soliton in parity-time-symmetric waveguide arrays

Anuj P. Lara, Ambaresh Sahoo, Samudra Roy

We investigate the dynamics of a spatial discrete soliton and the radiation families emitted by it inside a parity-time ()-symmetric waveguide array with alternate ga…

physics.optics2023

Beam propagation in an active nonlinear graded-index fiber

Anuj P. Lara, Samudra Roy, Govind P. Agrawal

A theoretical model is developed by exploiting the variational technique to investigate the evolution of an optical beam inside an optically pumped graded-index fiber amplifier. Th…