Optical Transmission Loss of As–S Glass Fiber in 1.0–5.5 µm Wavelength Region

The optical transmission loss spectrum of an arsenic sulphide glass fiber was measured in a wavelength region between 1.0 and 5.5 µm. Minimum losses of 92 dB/km at 1.85 µm, 78 dB/km at 2.4 µm and 164 dB/km at 5.3 µm were obtained in the fiber with a small tail on the band edge absorption. The fiber was drawn from a high purity glass rod.