Abstract

High-resolution fiber-optic assemblies based on modified silver halide lightguides that operate in the spectral region from 2 to 25 μm have been developed and investigated. Two nontrivial methods of fabricating polycrystalline fiber assemblies for the mid-IR are proposed and implemented. One of them was used to produce fiber assemblies from silver halide lightguides with the unprecedentedly low diameter of 110 μm. The functional properties of the resulting fiber assemblies are studied: the transmission range, optical losses, cross-talk, spatial resolution, and the effect of heating. The resulting data make it possible to consider using such fiber assemblies in IR thermography, spectroscopy, and microscopy.

© 2019 Optical Society of America

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