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Transmission of 4.5 Gbit/s via a 36 km monomode fiber at 1550 nm

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2 Author(s)
Hanke, Gerhard ; Res. Inst. of Deutsche Bundespost, Darmstadt, West Germany ; Hein, B.

A 4.5 Gb/s optical transmission system has been developed for experimental use that is based on input and output bit rates of 139.264 Mb/s. To span the maximum regenerator spacing of 36 km, the system works at 1550 nm, using a single frequency DFB (distributed feedback) laser, standard monomode fiber, and ternary avalanche photodiode. Multiplexing and demultiplexing are effected in several steps: the frame structure of the first multiplexing level (565 Mb/s) can be maintained just by modifying the frame alignment word of one 565 Mb/s channel. Signal processing is done predominantly with GaAs-circuits; some Si ICs are used at the highest bit rate

Published in:

Global Telecommunications Conference, 1988, and Exhibition. 'Communications for the Information Age.' Conference Record, GLOBECOM '88., IEEE

Date of Conference:

28 Nov-1 Dec 1988