The construction of the fiber is based upon the refractive index of the material composing each of the three layers that make up the strand. The inner core material has the highest refractive index, ensuring internal reflection so the light is “trapped” inside and travels the full length of the fiber before escaping.
Additional ResourcesNo Additional Resources at the time.
Flinn Catalog/Reference Manual Page 687
Flinn Middle School Catalog/Reference Manual Page 434