Abstract
Various dispersion-compensation techniques are compared on the basis of eye opening, eye closure, bit error rate, and Q-factor. The techniques that use dispersion-compensating fiber, fiber Bragg gratings (FBG), optical phase conjugators (OPC), negative dispersion fiber (NDF), and reverse dispersion fiber (RDF) for dispersion compensation are compared. The NDF technique is more attractive for long-distance cable television (CATV) systems as this technique gives better eye opening, eye closure, bit error rate, and Q-factor characteristics than any other technique. The RDF technique is the next-best technique. The FBG technique is attractive only at a 120 km transmission distance in CATV systems. The OPC technique is not recommended for long-distance CATV transmission systems.
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