Optical fibre connectivity

Subject: Schemes

Context:

Each village to be connected with optical fibre cable (OFC) connectivity in next 1000 days. It is also announced that in the next 1000 days, Lakshadweep will be connected with submarine optical fibre cable

Concept :

• Optical fibre is the technology associated with data transmission using light pulses travelling along with a long fibre which is usually made of plastic or glass.
• Optical fibres are also unaffected by electromagnetic interference.
• The fibre optical cable uses the application of total internal reflection of light.
• The fibres are designed such that they facilitate the propagation of light along with the optical fibre depending on the requirement of power and distance of transmission.
• Single-mode fibre is used for long-distance transmission, while multimode fibre is used for shorter distances.
• The outer cladding of these fibres needs better protection than metal wires.

Submarine Optical Fibre Cable :

• It is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea.
• The optical fibre elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable will be deployed.