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A telecommunications Link is the simplest of fibre optic systems .
It consists basically of a transmitter , a fibre link and a receiver . The transmitter will normally be equipped with a laser diode , usually with an output wavelength of 1300nm or 1500 nm .
THe fibre link will be made of single lengths of Single Mode optical fibre of length 2km fusion spliced together .
THe link will be able to carry thousands of telephone conversations " simultaneously " by means of Time DIVISION MULTOPLEXING .
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