Fiber optics (FOPP) , or optical fiber  is the technology used by internet services such as to transmit information as pulses of light particles through strands of fiber made of glass or plastic over long distances up to 10KM, (Min 2000 – Max UP TO 10km) .

It consists of one or more strands of glass, each only slightly thicker than a human hair. The center of each strand is called the core, which provides the pathway for light to travel. 

And the FOPP is available in market 2 core to 96 core. ( min price 8 rupees to depend on quality )

Mainly fiber optic cables are two types.
Single-mode fiber
Multimode fiber