Session Overview |
Photonic theory design and simulations - Bloc 4Room: Cartier 1 |
Date: Wednesday, June 06 |
08:00 |
Vertically Coupled Monolithic Integrated InP-AlGaInAs Waveguides
Main Author: Shane Duggan Organization: Tyndall National Institute, Ireland Two InP-AlGaInAs waveguides with different band-gaps have been vertically integrated monolithically using an additional intermediate waveguide to aid coupling. Coupling between the waveguides is achieved by lateral tapering of the upper waveguide, and outside the coupling section the waveguides are isolated. |
08:15 |
Small Period Gratings Written in Few-Mode Fiber Using Electric Arc Discharges
Main Author: Prabin Pradhan Organization: ETS, Canada We report a long period fiber grating (LPFG) with the smallest pitch fabricated using the electric arc-induced approach. With the small-pitch LPFG written in a few-mode fiber, we were able to demonstrate the efficient excitation of higher-order cylindrical vector beams. |
08:30 |
Dispersion Engineering in Symmetry Broken Photonic Crystals: from Flat-Band to Dirac Cones
Main Author: Pierre Viktorovitch Organization: Institut des Nanotechnologies de Lyon, INL/CNRS, Université de Lyon, France We demonstrate that symmetry breaking opens a new degree of freedom to tailor the energy momentum dispersion in photonic crystals. Using a general theoretical framework in two illustrative practical structures, we show that breaking symmetry enables an on-demand tuning of the local density of states of a same photonic band from zero (Dirac cone dispersion) to infinity (flat-band dispersion), as well as any constant density over an adjustable spectral range. As a proof-of-concept, we experimentally demonstrate the transformation of a very same photonic band from conventional quadratic shape to Dirac dispersion, flat-band dispersion and multi-valley one, by finely tuning the vertical symmetry breaking. Our results provide an unprecedented degree of freedom for optical dispersion engineering in planar integrated photonic devices. |
08:55 |
Integrated microwave photonics
Main Author: Jose Campany Organization: University of Valencia, Spain To be announced |
09:40 |
Energy-preserving frequency comb signal processing techniques: arbitrary FSR control and noise mitigation
Main Author: Jose Azana Organization: INRS, Canada To be announced |
10:05 |
Ultralow thermal sensitivity of phase and propagation delay in hollow-core fibres
Main Author: Radan Slavik Organization: University of Southampton, United Kingdom To be announced |