Fluoride glasses have been studied for the past 20 years and have foun
d various applications in optics, sensors, infrared instrumentation, m
edicine and telecommunications. Material requirements for these applic
ations and for basic research influence the search for new glass-formi
ng systems and the optimization of existing glasses. Fluoroindate and
cadmium fluorochloride glasses appear promising for laser fibers and o
ptical amplification. Mixed anion glasses offer some potential in nume
rous fields, including optical transmission, ionic conductivity, non-l
inear optical properties and basic research. They encompass new heavy
halide, oxyfluoride and chalcohalide glasses.