期刊
OPTICS EXPRESS
卷 25, 期 2, 页码 1542-1554出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.25.001542
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- NanoNextNL (6B-Functional Nanophotonics) a micro and nanotechnology consortium of the Government of the Netherlands and 130 partners
- Ministry of Economic Affairs
- Dutch Technology Foundation STW, Netherlands Organization for Scientific Research (NWO) [11358]
We demonstrate supercontinuum generation in stoichiometric silicon nitride (Si3N4 in SiO2) integrated optical waveguides, pumped at telecommunication wavelengths. The pump laser is a mode-locked erbium fiber laser at a wavelength of 1.56 mu m with a pulse duration of 120 fs. With a waveguide-internal pulse energy of 1.4 nJ and a waveguide with 1.0 mu m x 0.9 mu m cross section, designed for anomalous dispersion across the 1500 nm telecommunication range, the output spectrum extends from the visible, at around 526 nm, up to the mid-infrared, at least to 2.6 mu m, the instrumental limit of our detection. This output spans more than 2.2 octaves (454 THz at the -30 dB level). The measured output spectra agree well with theoretical modeling based on the generalized nonlinear Schrodinger equation. The infrared part of the supercontinuum spectra shifts progressively towards the mid-infrared, well beyond 2.6 mu m, by increasing the width of the waveguides. (C) 2017 Optical Society of America
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