Patent ID: 7489872

Claim:
An optical fiber system for carrying both CATV (cable television) and Ethernet signals, comprising: a transmitting part, an optical channel and a receiving part, said transmitting part comprising: (1) a first signal transmitter; (2) a second signal transmitter comprising a transmitting signal source, a radio-frequency carrier, a mixer for transmission and a band-pass filter; and (3) a combiner amplifier, said receiving part comprising: (1) a receiver divider; (2) a first receiver; and (3) a second receiver comprising a receiving signal source, a high-pass filter, a down-converter carrier, a mixer for receipt, a low-pass filter, a limiting amplifier and a signal output, wherein, by said combiner amplifier, (1) a signal from said first signal transmitter and a signal from said second signal transmitter are combined to form a mixed signal comprising at least one analog signal and at least one digital signal; (2) said mixed signal is adjusted in level and power; and (3) said mixed signal is modulated into an optical signal; wherein, by said receiver divider, said optical signal is divided into a signal for a first receiver and a signal for a second receiver; and wherein said transmitting part is connected to said receiving part by said optical channel.