Extreme polarization-dependent supercontinuum generation in an uncladded silicon nitride waveguide
Kuvaus
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 μm. 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 self-phase modulation mechanism (SPM). Such polarization sensitive supercontinuum source offers versatile applications from broadband on-chip sensing to pulse compression and few-cycle pulse generation. Our experimental results are in very good agreement with numerical simulations.
Näytä enemmänJulkaisuvuosi
2021
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Caroline Amiot - Tekijä
GOERY GENTY - Muu tekijä
Tuntematon organisaatio
CAMILLE-SOPHIE BRES - Muu tekijä
EIRINI TAGKOUDI - Muu tekijä
figshare - Julkaisija
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englanti
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