Assertion: fiber optic cable's core | /r/MadeOf | glass
Facets:
value: usually
type: DEGREE
Source sentences:
text: The Core: Usually made of glass, the core is the innermost part of the fiber, where the light passes through.
text: The core of the cable is made of one or more glass or plastic fibers, and it provides the pathway through which the transmitted light can flow.
text: Usually made of glass, the core is the innermost part of the fiber, where the light passes through.
text: The core is made of glass that has a very low refraction index, allowing the phenomena of total internal refraction to take place.
text: Its core is made of glass which acts like an insulator letting no electric current flow through it.
text: The core, made of glass or plastic, provides the path for light propagation.