Title :
Reverse Ridge/Slot Chalcogenide Glass Waveguide With Ultrabroadband Flat and Low Dispersion
Author :
Yanfen Zhai ; Chenzhi Yuan ; Renduo Qi ; Wei Zhang ; Yidong Huang
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
A reverse ridge/slot hybrid chalcogenide glass (As2S3) waveguide with two vertical silicon dioxide slots is proposed in this paper. The fundamental quasi-TE mode of the waveguide shows an ultraflat dispersion with three zero-dispersion wavelengths. Its dispersion is confined between -26 and +27 ps/nm/km over a bandwidth of 1370 nm (from 1770 to 3140 nm). Two slots in the waveguide introduce the dispersion tailoring effect on the quasi-TE mode, which provides more flexibility for designing the waveguide dispersion. The nonlinear coefficient and the phase mismatching of the degenerate fourwave mixing (FWM) process in this waveguide are calculated, showing that it can support broadband FWM processes in nearand middle-infrared regions.
Keywords :
arsenic compounds; chalcogenide glasses; multiwave mixing; optical dispersion; optical glass; optical phase matching; optical waveguides; ridge waveguides; As2S3-SiO2; degenerate four-wave mixing process; fundamental quasiTE mode; low dispersion; nonlinear coefficient; phase mismatching; reverse ridge/slot chalcogenide glass waveguide; ultrabroadband flat dispersion; vertical silicon dioxide slots; waveguide dispersion; Bandwidth; Dispersion; Electric fields; Films; Glass; Nonlinear optics; Optical waveguides; Chalcogenide glass waveguides; reverse ridge/slot waveguide; waveguide dispersion; waveguide nonlinearity;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2456062
