Abstract

The increase in the optical loss of the IR-transmitting arsenic-selenide glass fiber in the temperature range of 150°C >= T >= 20°C was investigated. Between the wavelength region of 1.3 and 8 µm, there is a small increase in the loss in which the contribution of free-carrier absorption is small. At high temperature T = 150°C and λ >= 8~µm, both the free-carrier and multiphonon absorption contributed to the total loss. From a practical perspective, the As-Se fiber loss increases only slightly under normal operating temperatures and so can still be used for many applications.

[IEEE ]

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