Scattering losses as low as 0.025 dB/km at 2.55 µm have been measured in short lengths of fluoride-glass optical fiber.These measurements were made on several 5–7-cm lengths of fiber. Measurements were also made at various wavelengths to determine the wavelength dependence of the optical loss.
L. E. Busse, G. H. McCabe, and I. D. Aggarwal, "Wavelength dependence of the scattering loss in fluoride optical fibers," Opt. Lett. 15, 423-424 (1990)