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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