Session Overview |
Photonic theory design and simulations - Bloc 3Room: Cartier 1 |
Date: Tuesday, June 05 |
15:30 |
Advances in silicon photonics
Main Author: Laurent Vivien Organization: CNRS, France To be announced |
16:15 |
Recent Progress on Sub-wavelength Engineered Waveguide Functional Elements
Main Author: Hon Tsang Organization: The Chinese University of Hong Kong, Hong Kong We review recent progress on the use of subwavelength structures for different waveguide functional elements including fully suspended slot waveguides, low loss slot bends, strip waveguide to slot waveguide mode converters and racetrack resonators. |
17:00 |
Plasmonic Nanocavities for Enhanced Terahertz Light Matter Coupling
Main Author: Luca Razzari Organization: INRS-EMT, Canada We report on the phonon resonance hybridization of nanocrystals inside terahertz nanoantenna cavities |
17:25 |
Distributed Backscattering in Various Production Si Photonic Waveguides
Main Author: Bo Peng Organization: IBM Thomas J. Watson Research Center, United States It is known that backscattered light can have a significant impact on the performance of optical systems, resulting in instability and additional laser noise, degrading high-speed signal integrity and increasing the bit-error-rate (BER) of communication links [1]. In addition to backscattering from abrupt transitions, distributed backscattering can accumulate with waveguide length and reach significant levels in waveguide systems with high-index-contrast boundaries. Such distributed backscattering is difficult to predict a priori, since defect densities in given waveguide fabrication platforms are not typically known. Hence, measurements are required, especially in waveguides of more complex topologies resulting from leveraging existing material and lithographic layers of production CMOS foundry processes for the fabrication. Although various studies have addressed waveguide properties such as propagation loss and dispersion, only a limited number of which report on distributed backscattering in integrated photonic waveguides [2]. In addition, backscattering measured on simple waveguide geometries may not hold for CMOS-integrated waveguides, where the optical mode can overlap with stochastic defect sources originating within porous low-k dielectrics, sidewall spacers, and roughening of the top waveguide surface. |
17:50 |
Robust, topologically-protected photonic crystal nanocavities
Main Author: Kathleen McGarvey-Lechable Organization: Concordia University, Canada A proposal for a topological silicon photonic crystal (PhC) nanocavity is discussed. The Su-Schrieffer-Heeger model is applied to a 1D silicon PhC waveguide. The non-trivial topology of the dimerized PhC lattice ensures the appearance of a single edge state, which forms the basis for the PhC nanocavity. The robustness of the edge state’s quality factor to deformations of the PhC lattice (e.g. surface roughness, PhC hole size variation) is demonstrated computationally. |