Extreme polarization-dependent supercontinuum generation in an uncladded silicon nitride waveguide

被引：19

作者：

Tagkoudi, Eirini ^{[1
]}

Amiot, Caroline G. ^{[2
]}

Genty, Goery ^{[2
]}

Bres, Camille-Sophie ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Photon Syst Lib PHOSL, CH-1015 Lausanne, Switzerland

[2] Tampere Univ, Photon Lab, Ultrafast Photon Grp, FI-33014 Tampere, Finland

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 14期

基金：

芬兰科学院; 欧洲研究理事会;

关键词：

MIDINFRARED SUPERCONTINUUM; BROAD-BAND; DISPERSION; ALGAAS; PULSES;

D O I：

10.1364/OE.430197

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally demonstrate the generation of a short-wave infrared supercontinuum in an uncladded silicon nitride (Si3N4) waveguide with extreme polarization sensitivity at the pumping wavelength of 2.1 mu m. The air-clad waveguide is specifically designed to yield anomalous dispersion regime for transverse electric (TE) mode excitation and all-normal-dispersion (ANDi) at near-infrared wavelengths for the transverse magnetic (TM) mode. Dispersion engineering of the polarization modes allows for switching via simple adjustment of the input polarization state from an octave-spanning soliton fission-driven supercontinuum with fine spectral structure to a flat and smooth ANDi supercontinuum dominated by a self-phase modulation mechanism (SPM). Such a polarization sensitive supercontinuum source offers versatile applications such as broad-band on-chip sensing to pulse compression and few-cycle pulse generation. Our experimental results are in very good agreement with numerical simulations. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：21348 / 21357

页数：10

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