Abstract: A communications network uses optical fibers to carry amplitude modulated broadband CATV signals over a considerable distance (6-30 km) to a fiber node. Electrical to optical transmitters at the headend launch, and optical to electrical receivers at the fiber node receive, optical signals corresponding to the broadband CATV signals. Distribution from the fiber node to the subscribers is obtained by transmitting electrical signals through a limited cascade of amplifiers over an electrical transmission line (coaxial cable). The limited cascade is much shorter than the fiber span and may include trunk amplifiers which are insufficient in number to add significant losses or distortion. Line extender amplifiers may be connected to output couplers located off the subscribers premises and the CATV signals then carried via electrical cables to the subscribers.

Abstract: Light wave communication over optical fiber networks for the distribution of broadband, multiple channel CATV (Cable Televison) signals uses fibers which carry amplitude modulated broadband signals over a considerable distance (6-30 km) to a fiber node. Electrical to optical transmitters at the head end and optical to electrical receivers at the fiber node launch and receive the optical signals corresponding to the broadband CATV electrical signals. Distribution from the fiber node to subscribers is obtained by transmitting the electrical signals from the receivers at the node through a limited cascade of amplifiers along an electrical transmission line (coax cable). The limited cascade is much shorter than the fiber span and includes trunk amplifiers which are insufficient in number to add significant losses or distortion. Line extender amplifiers may be connected to output couplers located off the subscribers premises and then via electrical cables to the subscribers.