Question

Fundamental principle behind the propagation of light in dielectric waveguides and optical fibers is

• A. Total internal reflection
• B. Diffraction
• C. Absorption
• D. Refraction

Hint:

Optical fibers use total internal reflection to guide light along the core, making them efficient for long-distance communication.

Answer 1

The Correct Option is A

The propagation of light in dielectric waveguides and optical fibers relies on the principle of total internal reflection. This occurs when the light is reflected off the core-cladding interface within the fiber, allowing the light to travel long distances with minimal loss.