Assertion: fiber optic cable's fiber | /r/MadeOf | pure silica
Facets:
value: almost always
type: TEMPORAL
Source sentences:
text: Glass optical fibers are almost always made from pure silica, but some other materials, such as fluorozirconate, fluoroaluminate, and chalcogenide glasses, are used for longer-wavelength infrared applications.
text: Glass optical fibers are almost always made from pure silica, but some other materials, such as fluorozirconate, fluoroaluminate, and chalcogenide glasses, are used for longer-wavelength infrared applications.