Derive the expression for the numerical aperture of an optical fiber. Mention any two
merits and demerits of optical communication.
Answer:-
Merits of Optical Communication
- Bandwidth is above copper cables
- Less power loss and allows data transmission for extended distances
- Optical cable is resistance for electromagnetic interference
- Fiber cable is sized as 4.5 times which is best than copper wires
- As cable are lighter, thinner, in order that they use less area as compared to copper wires
Demerits of Optical Communication
- These cable are very difficult to merge so there’ll be loss of beam within cable
- Installation of those cables is cost-effective. they’re not as robust because wires. Special equipment is typically required to optical fiber.
- These cable are highly vulnerable while fitting
- These cables are more delicate than copper wires.
- Special devices are needed to ascertain transmission of fiber cable.
- Fiber optic cable is dear to put in. It needs costly splicing machines and trained specialists to place in fiber optic cables.
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