The authors report on the first demonstration of optical fibres based
on the Ga:La:S system. Core-clad structures have been fabricated by th
e rod and tube method and pulled into lengths > 200m. Transmission ove
r the wavelength range 1.0 to 6.5 mu m, with fibre loss approaching th
e absorption and scattering level of the bulk glass, is obtained, open
ing the possibility of new fibre device applications of this promising
glass host.