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Unformatted text preview: the ber, the signal is amplied by an optical in-line amplier. Depending on the distance, bit rate, and type of ber used, the signal may also be passed through a dispersion-compensating module, usually at each amplier stage. At the receiving end, the signal may be amplied by an optical preamplier before it is passed through a demultiplexer. Each wavelength is then received by a separate photodetector. Throughout this chapter, we will be focusing on digital systems, although it is possible to transmit analog signals over ber as well. The physical layer of the system must ensure that bits are transmitted from the source to their destination reliably. The measures of quality are the bit error rate (BER) and the additional power budget 289...
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This note was uploaded on 01/15/2011 for the course ECE 6543 taught by Professor Boussert during the Spring '09 term at Georgia Institute of Technology.
- Spring '09