Spatiotemporal helicon wavepackets

P Béjot, B Kibler - ACS photonics, 2021 - ACS Publications
Propagation-invariant or nondiffracting optical beams have received considerable attention
during the last two decades. However, the pulsed nature of light waves and the structured …

Quadrics for structuring invariant space–time wavepackets

P Béjot, B Kibler - ACS photonics, 2022 - ACS Publications
Space–time light structuring has emerged as a very powerful tool for controlling the
propagation dynamics of pulsed beams. The ability to manipulate and generate space–time …

Experimental Observation of the Spontaneous Emission of a Space–Time Wavepacket in a Multimode Optical Fiber

K Stefanska, P Béjot, K Tarnowski, B Kibler - ACS photonics, 2023 - ACS Publications
We provide a complete analysis, from theory to experiment, of the spontaneous emergence
of a discretized conical wave of X-type (ie, a localized 2D+ 1 space-time wavepacket) when …

Efficient multimode vectorial nonlinear propagation solver beyond the weak guidance approximation

P Béjot - JOSA B, 2024 - opg.optica.org
In this paper, we present an efficient numerical model able to solve the vectorial nonlinear
pulse propagation equation in circularly symmetric multimode waveguides. The algorithm …

Multiple intermodal-vectorial four-wave mixing bands generated by selective excitation of orthogonally polarized LP01 and LP11 modes in a birefringent fiber

S Majchrowska, K Żołnacz, W Urbańczyk… - Optics Letters, 2022 - opg.optica.org
This study investigates the nonlinear frequency conversions between the six polarization
modes of a two-mode birefringent fiber. The aim is to demonstrate that the selective …

Zero Birefringence Condition in Lithium Niobate on Insulator Rib Waveguides

NR Yusof, N Ali, P Kolenderski, K Słowik… - Advanced Theory …, 2024 - Wiley Online Library
Birefringence, quantified as the maximum effective index difference of two orthogonally
polarized modes, is one of the key characteristics of Lithium Niobate on Insulator (LNOI) …

Spectral broadening and nonlinear mode coupling in a gas-filled hollow core capillary

O Zurita-Miranda, C Fourcade-Dutin, P Béjot… - Applied Physics B, 2024 - Springer
In this investigation, we explore the phenomenon of spectral broadening in a gas-filled
hollow-core capillary induced by ultra-short pulses, with a focus on nonlinear mode coupling …

Spatio-temporal dynamics of pulses in multimode fibers

Y Tamir, S Meir, H Duadi, M Fridman - Photonics, 2024 - mdpi.com
Time lenses can measure ultrafast signals but are based on single-mode fibers (SMFs). To
develop multimode time lenses that are based on a four-wave mixing process, we must have …

Numerical modelling of conical wave formation in multimode optical fibers

S Majchrowska, K Tarnowski, P Bejót, B Kibler - Nonlinear Optics, 2021 - opg.optica.org
Numerical modelling of conical wave formation in multimode optical fibers Page 1
Numerical modelling of conical wave formation in multimode optical fibers Sylwia …

High gain of erbium doped fiber amplifier.

AK Hussein Dagher… - Journal of College of …, 2022 - search.ebscohost.com
Optical amplifier is the useful solution for the optical power losses problem. A classical
model has been prepared for interaction process in optical fiber amplifier. A model applied …