Abstract

We computationally investigate fabrication tolerances in ${\mathrm{As}}_2{\mathrm{S}}_3$ negative-curvature antiresonant tube-lattice fibers. Since the dominant loss mechanisms for silica in the mid-infrared (mid-IR) is material absorption, ${\mathrm{As}}_2{\mathrm{S}}_3$, which offers a reduced loss over that wavelength range, is a natural candidate for mid-IR antiresonant fibers. However, any fiber fabrication technology, including for soft glasses, will have imperfections. Therefore, it is important to know how imperfect fabrication will affect the results of a fiber design. We study perturbations to the fiber, including a nonconstant tube-wall thickness, a single cladding tube with a different radius, a single cladding tube with a different tube-wall thickness, and “key” sections in the jacket.

© 2016 Optical Society of America

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