“…In view of such qualities, these glasses find potential applications as IR domes, optical fibers, modulators, non-linear optical devices and infrared laser windows. These are also considered as good glasses for hosting rare earth ions since they provide a low phonon energy (∼750 nm, lower than geramanate, phosphate and silicate glasses) environment that minimizes non-radiative losses [6][7][8]. The presence of tungsten ions in these glasses, further, makes them suitable for optoelectronic devices since they exhibit photochromism and electrochromism properties.…”