Fiber Optics for Not Yet Techies

"Computer Careers: Using Laser Technology to Send Tons of Information Through Tiny Strands of Glass"

by Richard Stooker, President Info Ring Press and author of Secrets of Changing to a Computer Career

Fiber optics is the new networking technology that promises allow the fast transport of huge amounts of information -- much more so than the copper wires we're used to. This was not always true, but now fiber optics are as cheap as copper -- that is bad news for current networks, current networking technologies and current networking professionals.

Fiber optics is the future. These networks consist of a tiny strand of glass, just wide enough to allow a ray of concentrated laser light through it. One single fiber can carry 100 terabits per second, and the fibers are run together in large bundles.

The main obstacle to fiber optics is what's known as "the last mile" problem

That's the copper wire that connects your home's phone wires to the network. They're developing FTTH / Fiber To The Home.

Also, the laser light going through the fibers does fade with distance, but the element erbium can amplify its signal - so they use EDFA / Erbium Doped Fiber Amplifiers.

Fiber optics come in multimode and single mode. The technologies involved include:

SONET - Synchronous Optical Network -- in the dominant position
DWDM - Dense Wavelength Division Multiplexing
Gigabet Ethernet
CWDM - Coarse Wavelength Division Multiplexing

These are the fiber optics basics.

Next: Frame Relay

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