What portion of the electromagnetic spectrum is used in optical fiber communication?

Light refers to quite the portion of the spectrum that's with reference to what's visible to the human eye. The spectrum consists of visible and near-infrared light-weight like that transmitted by fiber, and every one alternative wavelengths wont to transmit signals like AM and FM radio and tv.

Either infrared is used in optical fiber communication. Fiber optic communication. Visible light and infrared light used for optical communication.