The intent of this brief discussion is to provoke consideration that silica remains the best choice for all fiber optics applications, including those operating in the visible, near-IR, and even IR spectral region, exhibiting high or low optical nonlinearities, power-scalability, and even some newer and important effects such as internal laser cooling. Silica's superiority will be compared to those for fluoride, chalcogenide, and hollow core fibers.
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