Micro‐and submicrometric waveguiding structures in optical crystals produced by ion beams for photonic applications

F Chen - Laser & Photonics Reviews, 2012 - Wiley Online Library
Energetic ion beams with diverse energies, species and beam dimensions have been
extensively utilized to modify the properties of materials to achieve versatile applications in …

Supervised and unsupervised learning using a fully-plastic all-optical unit of artificial intelligence based on solitonic waveguides

A Bile, F Moratti, H Tari, E Fazio - Neural Computing and Applications, 2021 - Springer
The software implementations of neuronal systems have shown great effectiveness, even if
the natural hardware separation between the processing and memory areas in computers …

All-optical reinforcement learning in solitonic x-junctions

M Alonzo, D Moscatelli, L Bastiani, A Belardini… - Scientific reports, 2018 - nature.com
Ethology has shown that animal groups or colonies can perform complex calculation
distributing simple decision-making processes to the group members. For example ant …

Recording of self-induced waveguides in lithium niobate at 405 nm wavelength by photorefractive–pyroelectric effect

ST Popescu, A Petris, VI Vlad - Journal of Applied Physics, 2013 - pubs.aip.org
We characterize the process of soliton waveguides (SWGs) recording at 405 nm wavelength
using pyroelectric effect in lithium niobate (LN) crystals. We experimentally study and …

Integrated optofluidic index sensor based on self-trapped beams in LiNbO3

M Chauvet, L Al Fares, B Guichardaz, F Devaux… - Applied Physics …, 2012 - pubs.aip.org
We show that self-trapped beams can form in structured monolithic lithium niobate chips. In
particular, they are observed to be unaffected when crossing few hundred microns wide …

Fast writing of soliton waveguides in lithium niobate using low-intensity blue light

ST Popescu, A Petris, VI Vlad - Applied Physics B, 2012 - Springer
We experimentally demonstrate the writing of soliton waveguides in lithium niobate with blue
violet light, at λ= 405 nm. This wavelength, obtained from a low-cost laser diode, allows very …

3D-soliton waveguides in lithium niobate for femtosecond light pulses

VI Vlad, A Petris, A Bosco, E Fazio… - Journal of Optics A …, 2006 - iopscience.iop.org
We show that efficient waveguides can be written by bright spatial solitons in the volume of
lithium niobate photorefractive crystals by cw and pulsed laser beams. Using high-repetition …

Bulk channel-type reconfigurable light-induced waveguides recorded by crossed lateral illumination

M Gorram, V Coda, P Thévenin, G Montemezzani - Applied Physics B, 2009 - Springer
Photoinduced channel waveguides are created in the bulk of biased electro-optic Sr 0.61 Ba
0.39 Nb 2 O 6 crystals by a proper combination of crossed lateral illumination waves. The …

Optical soliton neural networks

E Fazio, A Bile, H Tari - Artificial Neural Networks-Recent …, 2022 - iris.uniroma1.it
The chapter describes the realization of photonic integrated circuits based on
photorefractive solitonic waveguides. In particular, it has been shown that X-junctions …

Optical waveguides in Er: LiNbO3 fabricated by different techniques–a comparison

J Cajzl, P Nekvindová, A Macková, P Malinský… - Optical Materials, 2016 - Elsevier
We report on the comparison of three techniques used for the fabrication of optical
waveguides in erbium doped lithium niobate crystal substrates (Er: LiNbO 3). The …