Monday, April 19, 2010

carry different downlink data

Each two first-order sidebands are used to carry different downlink data, respectively, while the separated optical carrier is used in uplink with wavelength chi dazzle reuse. In this novel scheme, not only successfully generated doubled frequency mm-wave, but also make the best use of the whole optical power by realizing the wavelength reuse technique, simplified the Lacoste Polo Shirts configuration.Finally, a novel radio-over-fiber system has been experimentally demonstrated to generate multiple different frequency optical mm-wave signals simultaneously by using single optical discount wedding dresses carrier and one single-arm LiNbO3 modulator. At central station, multiple different baseband signals are electrically up-converted with corresponding RF signals in mixers, the converted cheap evening dresses signals are combined by an electrical power coupler to drive a single-arm LiNbO3 modulator based on optical carrier suppression. The differernt optical mm-wave 12hot cheap prom dresses signals, after transmitted to base station, are directly separated by a optical filter, then detected by different high-speed photo-diodes, respectively. The experiment results show that the repetitive frequency of the generated mm-wave signals is 20GHz and 40GHz, which is the double of the LO frequency based on OCS modulation, and 2.5Gbit/s data on 20GHz mm-wave can be transmitted at least 40 km over fiber. Therefore the scheme is potent and feasibility.
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