Q&A Forum

Answer to question no 1

Merits of optical fiber:

1. Bandwith is higher than copper cables.
2. Less power loss and allows data transmission for longer distance
3. The optical cable is resistant to electromagnetic interference
4. The size of fiber cable is 4.5 times better than copper wires and these cables are lighter, thinner, and occupy less area compare with metal wires.
5. Installation is easy due to less weight.
6. The optical fiber cables are very hard to tap because they don't produce electromagnetic energy. These cables are very secure while carrying or transmitting data.

Answer to question no 2:

_ringμ_water = μ _water / μ _ring  = (sin i_c ) / (sin r)

                    =1.32/2.45=sin i_c / sin 90

                    i_c =sin^-1 (1.32/2.45)

                    i_c=32.60°