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The increase of data traffic in wireless networks is requiring the bandwidth of photonics for the antenna data relay. While the distribution of RF signals through Radio-over-Fiber has become a well-accepted and established technology thanks to the low loss of fibers in signal transportation, photonics still has lot to offer to the radio world. RF signal generation, detection, and conditioning (e.g...
An innovative optical scheme to generate software-defined phase-modulated radio frequency (RF) pulses with carrier frequency agility from a mode-locked laser (MLL) is proposed. The technique exploits a direct digital synthesizer and a Mach–Zehnder modulator to apply an intermediate frequency modulation to the MLL's modes. The heterodyne detection of the optical signal allows the generation of amplitude-...
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