APL Photonics
(Jan 2021)
Mid-infrared supercontinuum generation in a low-loss germanium-on-silicon waveguide
Alberto Della Torre,
Milan Sinobad,
Remi Armand,
Barry Luther-Davies,
Pan Ma,
Stephen Madden,
Arnan Mitchell,
David J. Moss,
Jean-Michel Hartmann,
Vincent Reboud,
Jean-Marc Fedeli,
Christelle Monat,
Christian Grillet
Affiliations
Alberto Della Torre
Institut des Nanotechnologies de Lyon (INL), Université de Lyon, 69131 Ecully, France
Milan Sinobad
Institut des Nanotechnologies de Lyon (INL), Université de Lyon, 69131 Ecully, France
Remi Armand
Institut des Nanotechnologies de Lyon (INL), Université de Lyon, 69131 Ecully, France
Barry Luther-Davies
Laser Physics Center, Australian National University, Canberra, ACT 0100, Australia
Pan Ma
Laser Physics Center, Australian National University, Canberra, ACT 0100, Australia
Stephen Madden
Laser Physics Center, Australian National University, Canberra, ACT 0100, Australia
Arnan Mitchell
School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
David J. Moss
Optical Sciences Centre, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
Jean-Michel Hartmann
Université Grenoble Alpes, CEA-Leti, 38054 Grenoble Cedex 9, France
Vincent Reboud
Université Grenoble Alpes, CEA-Leti, 38054 Grenoble Cedex 9, France
Jean-Marc Fedeli
Université Grenoble Alpes, CEA-Leti, 38054 Grenoble Cedex 9, France
Christelle Monat
Institut des Nanotechnologies de Lyon (INL), Université de Lyon, 69131 Ecully, France
Christian Grillet
Institut des Nanotechnologies de Lyon (INL), Université de Lyon, 69131 Ecully, France
DOI
https://doi.org/10.1063/5.0033070
Journal volume & issue
Vol. 6,
no. 1
pp.
016102
– 016102-7
Abstract
Read online
We experimentally demonstrate supercontinuum (SC) generation in a germanium-on-silicon waveguide. This waveguide exhibits propagation loss between 1.2 dB/cm and 1.35 dB/cm in the 3.6 µm–4.5 µm spectral region for both transverse electric (TE) and transverse magnetic (TM) polarizations. By pumping the waveguide with ∼200 fs pulses at 4.6 µm wavelength, we generate a mid-infrared (IR) SC spanning nearly an octave from 3.39 µm to 6.02 µm at the −40 dB level. Through numerical analysis of the evolution of the SC, we attribute the current limit to further extension into the mid-IR mainly to free-carrier absorption.
Published in APL Photonics
ISSN
2378-0967 (Online)
Publisher
AIP Publishing LLC
Country of publisher
United States
LCC subjects
Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website
https://aplphotonics.aip.org
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