Hydroxyl ion absorption

Hydroxyl ion absorption

Hydroxyl ion absorption is the absorption in optical fibres of electromagnetic waves, including the near-infrared, due to the presence of trapped hydroxyl ions remaining from water as a contaminant.

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.

ee also

Water absorption


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