What is fiber optics

 fiber optics is a means of transmitting data by means of photoelectric impulses through a thread made of transparent glass or other plastic materials with the same functionality. These threads can be almost as fine as a hair, and they are precisely the means of transmission of the signal.

Basically, through these very fine cables, a light signal is transferred from one end of the cable to the other. This light can be generated by a laser or an LED, and its most widespread use is to transport data over long distances, since this medium has a much greater bandwidth than metallic cables, lower losses and higher transmission speeds.

According to page https://www.profesionalreview.com/2019/02/15/fibra-optica-que-es/#Que_es_la_fibra_optica