Optical Fibers and Cables
Purpose
Demonstrates total internal reflection by transmitting light through flexible fiber optic cables. Students see that light remains confined within the fiber regardless of how the cable is bent, illustrating the critical angle concept.
Figure 1:
Fiber optic cable collection showing cables of various thicknesses and connector types. This apparatus also serves as an optical point source for other demos.
Figure 2:
Green light transmitted through the fiber optic cable and emerging from the bundle end, demonstrating total internal reflection.
Figure 3:
Green light output from the polished fiber end face, showing efficient light transmission through the cable.
Figure 4:
Detail of the metal coupling connector on the thick black fiber optic cable.