The Advantages of Fibre
Fibre provides greater bandwidth than copper, so it's ideal for data-intensive multimedia applications
Very little signal loss occurs during transmission so data travels greater distances
Immunity and reliability
The fibre is made of glass, which is an insulator, making it immune to electromagnetic interference and radio-frequency interference (EMI/RFI), crosstalk, impedance problems, and more. You can run fibre cable next to industrial equipment without worry. Fibre is also less susceptible to temperature fluctuations and can be submerged in water.
Fibre doesn't radiate signals and is extremely difficult to tap. If it is tapped, it leaks light, you'll know it if someone is attempting to tap into your fibre connections.
Fibre is lightweight, thin, and more durable than copper cable with pulling specifications that are up to ten times greater than copper cables?. Its small size makes it easier to handle, and it takes up much less space in cabling ducts. Although fibre is still more difficult to terminate than copper is, advancements in connectors are making termination easier. In addition, fibre is actually easier to test than copper cable.
Multimode vs. single-mode fibre