Advantages of chalcogenide glasses
than Ge:
•High
Transmission over 1-14µm wavelength range
•Low
Weight (13% lower than Ge)
•Low
cost
•Optical
Athermalization with
low dn/dT
(15 times lower than Ge)
•Large
volume yield that can be diamond-turned, polished or moulded
(scales to large volume)
•No
Germanium Content