Patent ID: 7634200

Claim:
A single wavelength fiber-optic communication system that mixes an Ethernet signal with a radio frequency signal, the system comprising: an Ethernet signal module ( 1 ) for providing an Ethernet signal; a radio frequency signal module ( 21 ) for providing a radio frequency signal; a mixer module ( 2 ) for providing an optical mixed signal by means of mixing the Ethernet signal with the radio signal at a single wavelength; and a receiver module ( 4 ) for transforming the optical mixed signal into both the radio frequency signal and a digital signal that contains the Ethernet signal, wherein the receiver module ( 4 ) comprises: an optic-to-electric receiver ( 41 ) for transforming the optical mixed signal into the digital signal and the radio frequency signal; a digital application ( 42 ) for receiving the digital signal; and a radio frequency application ( 43 ) for receiving the radio frequency signal, wherein the optic-to-electric receiver ( 41 ) comprises: a photodiode ( 411 ) for transforming the optical mixed signal into an electric mixed signal; an amplifier ( 412 ) for amplifying the electric mixed signal; a power splitter ( 413 ) for splitting the amplified electric mixed signal into a first portion and a second portion; a low-pass filter ( 414 ) for transforming the first portion of the amplified electric mixed signal into the digital signal; and a band-pass filter ( 415 ) for transforming the second portion of the amplified electric mixed signal into the radio frequency signal, wherein the Ethernet signal module ( 1 ) comprises an optical signal unit ( 11 ) for providing the Ethernet signal in an optical form, wherein the mixer module ( 2 ) comprises a Mach-Zehnder electric-to-optic modulator ( 21 ), wherein both the Ethernet signal in the optical form and the radio frequency signal are directly modulated by the Mach-Zehnder electric-to-optic modulator ( 21 ).