Fibre Optics
Fibre optic cable are a type of cables which works with total internal reflection. Optical fibre is a thin light-pipe. It’s as thin as the human hair and it’s as flexible too. The core is surrounded by cladding which is also made by pure glass. The cladding has a low index which makes the light rays inside the core, totally internal reflected. The edges of the core acts like a mirror and it reflects the right rays through. Outside the cladding, there’s another layer named Buffer Coating (plastic) which protects the cladding and core so they don’t get damaged.
An optic fibre can transfer thousand of phone calls in the same time. A good thing with fibre optics is that they aren’t distracted by electronic or magnetic disorders such as thunders.
The signals used for the internet are electrical so you need a GBIC module because the optical fibre wires use optical signals. The information transmitted is usually digital information generated by computers, telephone systems and cable TV companies. This is a GBIC module (with its cover removed) which is an optical and electrical transceiver/convertor. The electrical connector is at top right, and the optical connectors are at bottom left
Review:
The signals in the optical fibres work with total internal reflection which means that the signal bounces of the surface. It can go on for about 200 km before the signals gets too weak.
The signals from the internet are electrical and the ones in the cable are optical so you need a electrical-optical convertor (GBIC module).
Helpful links and videos:
- Ali
A powerful foundation of ideas for those defining future focused success.
ReplyDeleteEnrgtech Industrial Electrical Components