Question

Which of the following Light source is popularly used in optical communication?

• A. Visible light
• B. Ultraviolet
• C. Infrared
• D. Radio frequency

Hint:

Infrared light is most suitable for optical communications due to low attenuation losses. Remember the spectrum of the electromagnetic wave and it's characteristics.

Answer 1

The Correct Option is C

Infrared light sources are most popularly used in optical communication systems because they have high frequencies, they are easily generated, and are attenuated less than other sources in optical fibers, making them ideal for transmitting signals over longer distances.