Ultra-broadband mid-infrared supercontinuum generation using chalcogenide rib waveguide

Article
Part of the following topical collections:
  1. Optical Wave & Waveguide Theory and Numerical Modelling 2015

Abstract

The ultrabroadband mid-infrared (MIR) supercontinuum (SC) generation using dispersion-tailored \(\hbox {Ge}_{11.5}\hbox {As}_{24}\hbox {Se}_{64.5}\) chalcogenide (ChG) glass rib-waveguide has been investigated numerically. An air-clad 1-cm-long rib-waveguide employing \(\hbox {MgF}_2\) glass for its lower cladding shows that an ultrabroadband MIR SC spanning from 1.8 to 8 μm and extending over more than 2 octave could be generated with a relatively low peak power of 0.5 kW pumped at a wavelength of 3.1 μm. Our estimated bandwidth is the largest reported so far for SC generated using ChG rib-waveguide pumped at a wavelength of 3.1 μm with a low peak power of 0.5 kW. We carry out simulations by varying peak power ranges between 0.1 and 3 kW. Our analysis through rigorous numerical simulations show that SC can be extended further into the MIR up to 10 μm using the same pump pulses with a relatively modest peak power of 3 kW.

Keywords

Numerical approximation and analysis Nonlinear optics Glass waveguides Supercontinuum generation  

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.School of Mathematics, Computer Science and EngineeringCity University LondonLondonUK

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