COMMUNICATION SYSTEM USING OPTICAL FIBERS

摘要

A communication system for transmitting video signals to a subscriber using optical fibers, for providing bi-directional telephone services for a subscriber using optical fibers, and for providing high-speed data services to a subscriber via a cable modem using optical fibers is provided. The communication system comprises a first optical fiber for transporting video programming at a first wavelength from a video-programming source to a network node. The system further comprises a second optical fiber for transporting video programming at a second wavelength from the network node to an optical node device and for transporting bi-directional telephone signals between the optical node device and the network node at a third wavelength in a downstream direction and a fourth wavelength in an upstream direction. The system further comprises a signal combining device located at the network node that combines cable modem (CM) signals from a cable modem transmission system (CMTS) located at the network node with the video programming prior to the transportation of the video programming on the second optical fiber. In addition the system comprises a high bandwidth bi-directional communication path between the CMTS and a public network.