Pulses of Light are used in _____ for communication system to transmit information.

Question

Question

This question was previously asked in

RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 2)

Answer 1

The correct answer is option 4.

Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of infrared light through an optical fiber.
Optical fibers are very thin strands of glass or plastic less than 1/10 the thickness of a human hair.
Another layer of glass, called “cladding,” is wrapped around the central fiber and causes light to repeatedly bounce off the walls of the cable rather than leak out at the edges, so signals travel farther without attenuation.
Fiber is preferred over electrical cabling when high bandwidth, long distance, or immunity to electromagnetic interference is required.
This type of communication can transmit voice, video, and telemetry through local area networks or across long distances.