Highly coherent mid-infrared supercontinuum generations in a strip titanium dioxide waveguide with three zero-dispersion wavelengths

Abstract

Xinzhu (2022) Highly coherent mid-infrared supercontinuum generations in a strip titanium dioxide waveguide with three zero-dispersion wavelengths. Optical Engineering, 61 (11).

On-Chip Supercontinuum Generation Pumped by Short Wavelength Fiber Lasers

“…Zhang et al simulated a compact dual-core waveguide consisting of SiN and TiO 2 with a large enough index contrast for dispersion engineering and obtained an octave-spanning supercontinuum generation from 1160 to 2385 nm at a greatly reduced propagation distance of 165 µm [45]. Shen et al further designed a strip TiO 2 waveguide with three zerodispersion wavelengths and simulated a SC covering a wavelength range from 1.71 to 9.90 µm (more than 2.5 octaves) while being pumped by a 3.1 µm laser [46]. Ryu et al designed dispersion and modal confinement in a TiO 2 slot waveguide and achieved one or two-octave broadband SC spectra in two waveguides with different structures [47].…”