Design of dispersion-engineered As 2 Se 3 channel waveguide for mid-infrared region supercontinuum generation
Document Type
Article
Publication Date
1-1-2018
Abstract
In recent years, low cost and scalable integrated optics compatible planar waveguides have emerged for an ultrabroadband supercontinuum generation between ultraviolet and mid-infrared region applications. A 20-mm-long integrated photonics compatible highly nonlinear As 2 Se 3 channel waveguide, which exhibited wider as well as lower magnitude and nearly flat anomalous dispersion region, designed and modeled by employing GeAsSe glass for its upper and lower claddings. Using pump source at 6 μm with a pulse duration of 170-fs, an ultrabroadband long wavelength region supercontinuum broadening covering the wavelength from 3.5 μm to 15 μm could be predicted with the largest input peak power of 10 kW. Increasing the power further to 20 kW does not enhance the supercontinuum expansion noticeably beyond 15 μm. This numerical demonstration could be the longest supercontinuum generation by an on-chip integrated photonics compatible planar waveguide which can be used for a variety of mid-infrared region applications.
Keywords
Anomalous dispersionl, Channel waveguide, Integrated photonics, Long-wavelength regions, Mid-infrared regions, Pulse durations, Super continuum, Ultra-broadband
Divisions
photonics
Funders
Ministry of Higher Education (MOHE) under the Grant No. GA 010-2014 (ULUNG),University of Malaya under the Grant Nos. RP029B-15 AFR and RU001-2017
Publication Title
Journal of Applied Physics
Volume
123
Issue
21
Publisher
AIP Publishing