Mid-infrared supercontinuum generation in a low-loss germanium-on-silicon waveguide

被引：30

作者：

Della Torre, Alberto ^{[1
]}

Sinobad, Milan ^{[1
]}

Armand, Remi ^{[1
]}

Luther-Davies, Barry ^{[2
]}

Ma, Pan ^{[2
]}

Madden, Stephen ^{[2
]}

Mitchell, Arnan ^{[3
]}

Moss, David J. ^{[4
]}

Hartmann, Jean-Michel ^{[5
]}

Reboud, Vincent ^{[5
]}

Fedeli, Jean-Marc ^{[5
]}

Monat, Christelle ^{[1
]}

Grillet, Christian ^{[1
]}

机构：

[1] Univ Lyon, Inst Nanotechnol Lyon INL, F-69131 Ecully, France

[2] Australian Natl Univ, Laser Phys Ctr, Canberra, ACT 0100, Australia

[3] RMIT Univ, Sch Engn, Melbourne, Vic 3001, Australia

[4] Swinburne Univ Technol, Opt Sci Ctr, Hawthorn, Vic 3122, Australia

[5] Univ Grenoble Alpes, CEA Leti, F-38054 Grenoble 9, France

来源：

APL PHOTONICS | 2021年 / 6卷 / 01期

基金：

欧洲研究理事会;

关键词：

OCTAVE-SPANNING SUPERCONTINUUM; FREQUENCY COMB GENERATION; ALL-OPTICAL MODULATION; BROAD-BAND; MU-M; PHOTONICS; SPECTROSCOPY; RESONATORS;

D O I：

10.1063/5.0033070

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 mu m-4.5 mu m spectral region for both transverse electric (TE) and transverse magnetic (TM) polarizations. By pumping the waveguide with similar to 200 fs pulses at 4.6 mu m wavelength, we generate a mid-infrared (IR) SC spanning nearly an octave from 3.39 mu m to 6.02 mu m 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.

引用

页数：7

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