Glassy chalcogenide semiconductor fibers

Glassy chalcogenide semiconductor fibers were produced having optical losses, in the near infrared region, of 1–3 dB/m. The results are given of investigations of the electrical conductivity and of the photoconductivity spectra of the fibers, and of the optical losses, as a function of their temperature and the radiation wavelength. The data are interpreted on the basis of an optical absorption mechanism involving two-stage optical transitions.