Optical signal sideband millimeter-wave signal generation for super-broadband optical wireless network
An optical wireless network includes an optical coupler for diverting received millimeter-wave signals comprised of an optical carrier and second order sidebands into multiple transmission paths; a downstream optical path being one of the multiple transmission paths and including an optical filter for filtering passing through the optical carrier with a single sideband, a converter for converting the optical carrier and single sideband to a corresponding electrical signal for amplification and broadcast transmission from an antenna; and an upstream path being one of the multiple transmission paths and having a filter for passing through the optical carrier only from the mm-wave signals and an intensity modulator driven by data received over the antenna to modulate the optical carrier for optical transmission to a receiving destination.
1. An optical wireless network comprising:
an optical coupler for diverting received millimeter-wave signals comprised of an optical carrier and second order sidebands into multiple transmission paths;
a downstream optical path being one of the multiple transmission paths and including an optical filter for filtering passing through the optical carrier with a single sideband, a converter for converting the optical carrier and single sideband to a corresponding electrical signal for amplification and broadcast transmission from an antenna; and
an upstream path being one of the multiple transmission paths and having a filter for passing through the optical carrier only from the millimeter wave signals and an intensity modulator driven by data received over the antenna to modulate the optical carrier for optical transmission to a receiving destination,
wherein the received millimeter-wave signals are generated by an intensity modulator biased at a top peak output power when a local oscillator LO signal used to generate the millimeter wave signals is removed.
2. The optical wireless network according to claim 1 , wherein the received millimeter-wave signals are generated with the frequency of the optical carrier being a multiple of a local oscillator LO frequency used to generate the millimeter wave signals.
3. The optical wireless network according to claim 1 , wherein the received millimeter-wave signals are generated with the frequency of the optical carrier being double of a local oscillator LO frequency used to generate the millimeter wave signals.
4. A method in an optical wireless network comprising the steps of:
i) diverting received millimeter-wave signals comprised of an optical carrier and second order sidebands into first and second transmission paths;
ii) over the first transmission path, passing through only the optical carrier with a single sideband from the millimeter wave signals,
iii) converting the optical carrier and single sideband to a corresponding electrical signal for amplification and broadcast transmission from an antenna; and
iv) over the second transmission path, passing through the optical carrier only from the millimeter-wave signals received to be modulated by an intensity modulator according to data received over the antenna for optical transmission to a receiving destination,
wherein the received millimeter-wave signals are generated by an intensity modulator biased at a top peak output power when a local oscillator LO signal used to generate the millimeter wave signals is removed.
5. The method according to claim 4 , wherein the received millimeter-wave signals are generated with the frequency of the optical carrier being a multiple of a local oscillator LO frequency used to generate the millimeter wave signals.
6. The method according to claim 4 , wherein the received millimeter-wave signals are generated with the frequency of the optical carrier being double of a local oscillator LO frequency used to generate the millimeter wave signals.