967 citations · 3.2k across the 37 of their papers we have counts for
28 papers · 1 filter
Mid- and long-wavelength infrared computational ghost spectroscopy
Linzhen He, Han Wu, Wei Deng +7
Spectral-domain ghost imaging enables high-resolution spectroscopy with a single-pixel detector. The technique does not rely on spectrally resolved detectors, which makes it inhere…
Limits of nonlinear and dispersive fiber propagation for an optical fiber-based extreme learning machine
Andrei V. Ermolaev, Mathilde Hary, Lev Leybov +5
We report a generalized nonlinear Schrödinger equation simulation model of an extreme learning machine (ELM) based on optical fiber propagation. Using the MNIST handwritten digit d…
Principles and Metrics of Extreme Learning Machines Using a Highly Nonlinear Fiber
Mathilde Hary, Daniel Brunner, Lev Leybov +3
Optical computing offers potential for ultra high-speed and low latency computation by leveraging the intrinsic properties of light. Here, we explore the use of highly nonlinear op…
Supercontinuum generation in a graded-index multimode tellurite fiber
Ekaterina Krutova, Lauri Salmela, Zahra Eslami +4
We report a near two-octave spanning supercontinuum (SC) from 790 nm to 2900 nm in a nanostructured tellurite graded-index multimode fiber with a nanostructured core. We study the…
Mid-infrared computational temporal ghost imaging
Han Wu, Bo Hu, Fei Peng +3
Ghost imaging in the time domain allows for reconstructing fast temporal objects using a slow photodetector. The technique involves correlating random or pre-programmed probing tem…
Tailored supercontinuum generation using genetic algorithmoptimized Fourier domain pulse shaping
Mathilde Hary, Lauri Salmela, Piotr Ryczkowski +3
We report the generation of spectrally-tailored supercontinuum using Fourier-domain pulse shaping of femtosecond pulses injected into a highly nonlinear fiber controlled by a genet…
Two octave supercontinuum generation in a non-silica graded-index multimode fiber
Zahra Eslami, Lauri Salmela, Adam Filipkowski +5
The generation of a two-octave supercontinuum from the visible to mid-infrared (700 - 2800 nm) in a non-silica graded-index multimode fiber is reported. The fiber design is based o…
Predicting ultrafast nonlinear dynamics in fibre optics with a recurrent neural network
Lauri Salmela, Nikolaos Tsipinakis, Alessandro Foi +3
The propagation of ultrashort pulses in optical fibre displays complex nonlinear dynamics that find important applications in fields such as high power pulse compression and broadb…
Machine learning analysis of rogue solitons in supercontinuum generation
Lauri Salmela, Coraline Lapre, John M. Dudley +1
Supercontinuum generation is a highly nonlinear process that exhibits unstable and chaotic characteristics when developing from long pump pulses injected into the anomalous dispers…
Low-noise octave-spanning mid-infrared supercontinuum generation in a multimode chalcogenide fiber
Zahra Eslami, Piotr Ryczkowski, Lauri Salmela +1
We demonstrate the generation of a low-noise, octave-spanning mid-infrared supercontinuum from 1700 to 4800 nm by injecting femtosecond pulses into the normal dispersion regime of…
Computational spectral-domain single-pixel imaging
Piotr Ryczkowski, Caroline Amiot, John M. Dudley +1
We demonstrate single-pixel imaging in the spectral domain by encoding Fourier probe patterns onto the spectrum of a superluminescent laser diode using a programmable optical filte…
Interferometric Autocorrelation Measurements of Supercontinuum based on Two-Photon Absorption
Shanti Toenger, Roosa Mäkitalo, Jani Ahvenjärvi +4
We report on interferometric autocorrelation measurements of broadband supercontinuum light in the anomalous dispersion regime using two-photon absorption in a GaP photodetector. T…
Ghost optical coherence tomography
Caroline Amiot, Piotr Ryczkowski, Ari T. Friberg +2
We demonstrate experimentally ghost optical coherence tomography using a broadband incoherent supercontinuum light source with shot-to-shot random spectral fluctuations. The techni…
Broadband continuous spectral ghost imaging for high resolution spectroscopy
Caroline Amiot, Piotr Ryczkowski, Ari. T. Friberg +2
Ghost imaging is an unconventional imaging technique that generates high resolution images by correlating the intensity of two light beams, neither of which independently contains…
Real-time measurements of dissipative solitons in a mode-locked fiber laser
P. Ryczkowski, M. Närhi, C. Billet +3
Dissipative solitons are remarkable localized states of a physical system that arise from the dynamical balance between nonlinearity, dispersion and environmental energy exchange.…
Magnified Time-Domain Ghost Imaging
Piotr Ryczkowski, Margaux Barbier, Ari T. Friberg +2
Ghost imaging allows to image an object without directly seeing this object. Origi- nally demonstrated in the spatial domain using classical or entangled-photon sources, it was rec…
Efficiency of dispersive wave generation from a dual-frequency beat signal
K. E. Webb, M. Erkintalo, Y. Q. Xu +2
The emission of dispersive waves (DWs) by temporal solitons can be described as a cascaded four-wave mixing process triggered by a pair of monochromatic continuous waves (CWs). We…
Caustics and Rogue Waves in an Optical Sea
Amaury Mathis, Luc Froehly, Shanti Toenger +3
There are many examples in physics of systems showing rogue wave behaviour, the generation of high amplitude events at low probability. Although initially studied in oceanography,…
Experimental Demonstration of Spectral Intensity Optical Coherence Tomography
Piotr Ryczkowski, Jari Turunen, Ari T. Friberg +1
We demonstrate experimentally quantum-inspired, spectral-domain intensity optical coherence tomography. We show that the technique allows for both axial resolution improvement and…
Instabilities, breathers and rogue waves in optics
John M. Dudley, Frédéric Dias, Miro Erkintalo +1
Optical rogue waves are rare yet extreme fluctuations in the value of an optical field. The terminology was first used in the context of an analogy between pulse propagation in opt…
Nonlinear optics of fibre event horizons
Karen E. Webb, Miro Erkintalo, Yiqing Xu +4
The nonlinear interaction of light in an optical fibre can mimic the physics at an event horizon. This analogue arises when a weak probe wave is unable to pass through an intense s…
Optical Rogue Waves in Whispering-Gallery-Mode Resonators
Aurélien Coillet, John Dudley, Goery Genty +2
We report a theoretical study showing that rogue waves can emerge in whispering gallery mode resonators as the result of the chaotic interplay between Kerr nonlinearity and anomalo…
Real time noise and wavelength correlations in octave-spanning supercontinuum generation
T. Godin, B. Wetzel, T. Sylvestre +8
We use dispersive Fourier transformation to measure shot-to-shot spectral instabilities in femtosecond supercontinuum generation. We study both the onset phase of supercontinuum ge…
Real-time full bandwidth measurement of spectral noise in supercontinuum generation
B. Wetzel, A. Stefani, L. Larger +8
The ability to measure real-time fluctuations of ultrashort pulses propagating in optical fiber has provided significant insights into fundamental dynamical effects such as modulat…