Definitions for "optical fiber"
A thin fiber of very pure glass used to carry signals transmitted by means of light. It has much greater information-carrying capacity than a copper wire, and in the 1990's became a dominant means of transmitting telephone communications over long distances.
This is a filament that is made of dielectric materials that has the purpose transmitting light, which may or may not carry information.
See fiber-optic cable.
Keywords:  guide, wave
an optical wave-guide
Keywords:  storage
a complex structure that consists of three layers