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Dispersion-engineered microstructured optical fiber for mid-infrared supercontinuum generation

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Abstract

Due to the large scientific and technical interest in the mid-infrared (MIR) spectral region, and the limitations of MIR light sources, we focus on the generation of a broad supercontinuum inside a short piece of As2Se3 microstructured optical fiber (MOF) with a square lattice. This is accomplished by filling the holes in the innermost ring of the proposed MOF with Ge33As12Se55 to produce ultraflat and near-zero dispersion. Simulations reveal that, by launching 100 fs input pulses centered at λ0=6.2μm with a peak power of 2 kW into the MOF, an optical spectrum as wide as 9.5 μm will be achieved. This spectrum is a suitable source for MIR applications such as spectroscopy, food quality control, and gas sensing.

© 2018 Optical Society of America

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