Patent ID: 6634811
Filing Date: 2003-10-21
Classification: H04B

Abstract:
An optical link for transmission of an RF signal using an optical fiber having opposing ends such that unwanted distortion signals are produced between said opposing ends when optical signals pass through the optical fiber, said optical link comprising:at least two light sources which emit first and second optical carriers at first and second optical wavelengths, respectively; a combiner for combining the first and second optical carriers into a combined optical signal; a modulator for modulating the combined optical signal using the RF signal, and an for producing first and second optical signals, such that each of the first and second optical signals includes a portion of the first and second optical carriers and said RF signal in a way which produces a predetermined relationship between the first and second optical signals; transmission means for selectively multiplexing certain portions of the first and second optical signals to produce a multiplexed signal and for introducing the multiplexed signal into one end of said optical fiber; and receiving means, at the opposing end of said optical fiber, for receiving the multiplexed signal including said unwanted distortion signals produced during transmission through said optical fiber and for recovering from the received multiplexed signal said first optical carrier affected by said unwanted distortion signals and having said RF signal modulated thereon and said second optical carrier affected by said unwanted distortion signals and having said RF signal modulated thereon and, thereafter, for using the modulated RF signals including said unwanted distortion signals obtained from the modulated first and second optical carriers in a way which re-generates the RF signal based on said predetermined relationship while causing said distortion signals to be canceled.