Assertion: fiber optic cable's fiber | /r/CapableOf | allow one mode of light
Facets:
value: to propagate at a time
type: TEMPORAL
Source sentences:
text: Single mode optical fiber has a small core, and only allows one mode of light to propagate at a time.
text: A single-mode optical fiber has a small core, and only allows one mode of light to propagate at a time.