FULL DUPLEX OPTICAL MODEM FOR BROADBAND ACCESS NETWORK

摘要

An optical modem link for full duplex transmission of multiple, independent RF carrier signals between network elements of a Broadband Access Network, includes a first optical modem (46), e.g., at a CATV headend broadcast facility (12) linked by a single optical fiber (48) with a second optical modem (50), e.g., at a distributed hub location (24), to form optical modem link. Each optical modem (46, 50) end of a respective link is equipped with an optical transmitter (62), which transmits light signal having a first wavelength, a receiver (64) which receives a light signal having a second wavelength, and a wavelength division multiplexer (70) which directs the outgoing light signal onto, and the incoming light signal off of, respectively, the fiber link.