Search for: [Abstrakt = "Simultaneous all\-optical frequency down\-conversion technique based on cross\-phase modulation in a high nonlinearity dispersion\-shifted fiber is proposed and verified by simulation, and its application to a wavelength\-division\-multiplexing \(WDM\) radio over fiber \(ROF\) is proposed. Error\-free simultaneous all\-optical frequency down\-conversion of the 16 WDM ROF upstream channels is achieved. The simulated results show the performance of WDM signals is in good accordance with a single signal without any interference, and the power difference of two beat frequencies of the down\-conversion signal is independent of the optical local oscillator power. The wavelength span of larger than 20 nm for down\-conversion signal can be obtained."]

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