WHAT ARE THE BENEFITS OF OPTICAL FIBRE OVER COPPER ?

Greater distance: Fibre optic allows to operate longer links.
Low attenuation: light signals encounter little resistance, data can be transmitted over longer
distances.

Security: breaks on a fibre optic cable are easy to detect.
Wider bandwidth: Optical fibre can carry more data than copper.

Reliability: Optical fibre is immune to electromagnetic and radio interference