Improved purification and processing techniques have been utilized to
fabricate Ge30As10Se30Te30 glass fibers with a minimum loss of 0.11 dB
/m at 6.6 mum. This is the lowest loss reported for any telluride glas
s fiber in the infrared region. Furthermore, the fibers exhibit less t
han 1 dB/m loss between 5.25 and 9.5 mum.