Abstract
Two types of reverse pillar integrated chalcogenide glass () waveguides are proposed in this study. These geometries exhibit an ultraflat and low dispersion profile with four zero dispersion wavelengths. Its low dispersion is approximately over a 2240 nm bandwidth (for waveguide) and over a 2030 nm bandwidth (for waveguide). Waveguide dispersion engineering is achieved by tuning the structural parameters of the waveguide, which has less sensitivity to the variations of structural parameters compared with silicon pillar waveguides. Moreover, the nonlinear coefficient and phase-matching condition in four-wave mixing (FWM) showed a great potential for broadband FWM processes in the near- and middle-infrared regions.
© 2016 Optical Society of America
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