Hydroxyl ion absorption is the absorption in optical fibers of electromagnetic radiation, including the near-infrared, due to the presence of trapped hydroxyl ions remaining from water as a contaminant.
[1] The hydroxyl (OH−) ion can penetrate glass during or after product fabrication, resulting in significant attenuation of discrete optical wavelengths, e.g., centred at 1.383 μm, used for communications via optical fibres.
[2] This article incorporates public domain material from Federal Standard 1037C.
This article about analytical chemistry is a stub.
You can help Wikipedia by expanding it.This optics-related article is a stub.