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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 34,
  • Issue 23,
  • pp. 5423-5430
  • (2016)

Ultrabroadband Supercontinuum Generation Through Photonic Crystal Fiber With As2S3 Chalcogenide Core

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Abstract

In this paper, a novel design of silica photonic crystal fiber is proposed and analyzed for supercontinuum generation (SCG). The suggested design has an As2S3 chalcogenide core region with large nonlinear coefficient and low anomalous dispersion. The modal analysis of the reported design is performed using a full vectorial finite element method while the SCG is simulated by solving the nonlinear Schrödinger equation using the split-step Fourier method. The effects of the fiber length, pump peak power, and pump wavelength on the SCG performance are studied thoroughly. It has been shown that the reported design has a very low zero dispersion wavelength, which facilitates the pumping at wavelength of 1.55 μm. Furthermore, the investigated design has ultrabroadband super continuum spectra of 2656 and 1788 nm around wavelengths of 1.55 and 1.3 μm, respectively, with a short device length of 10 mm. To the best of the authors' knowledge, the achieved ultrabroadband spectra are the maximum bandwidths with the shortest length for the two operating wavelengths 1.55 and 1.3 μm, simultaneously.

© 2016 IEEE

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