Proceedings PaperWater adsorption and desorption on silver halide IR fibers
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Spectroscopic measurements were used to evaluate the effect of water adsorption and desorption on IR fibers transmission. Water impurities attenuated the transmission of silver halide IR fibers at 2.94 micrometers , 6.32 micrometers , and at wavelengths longer than 10 micrometers . Water is adsorbed from the humidity of the air, and the adsorption is a slow exponential process that reaches saturation in a few months. Most of the water can be desorbed by heating the fibers to 110 - 140 degree(s)C for a few hours in air or in vacuum.