DESIGN OF EFFICIENT OPTICAL-FIBER COMMUNICATION-SYSTEMS FOR CATV HDTVDISTRIBUTION/

In this paper, we present the efficient design of intensity-modulation direct-detection optical fiber communication systems with erbium-dope d fiber amplifiers to support future CATV/HDTV distributions and broad casting. We consider three system configurations for CATV applications . The first one is the In-Line Amplifier scheme. The second scheme is based on a passive optical power splitter and optically-preamplified r eceivers, while the third scheme uses hybrid passive and active optica l power splitters. The receiver sensitivity is also analyzed for vario us system parameters. The schemes are compared in terms of the number of HDTV subscribers and the superiority of the third scheme over the s econd scheme is demonstrated.