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Broadband wireless transmission with tunable 5–40GHz carrier is demonstrated using photonic frequency conversion. The agile tuner allows ∼4 GHz of instantaneous bandwidth for both up- and down-conversion paths, without banding or channelization.
16, 64QAM, and higher-modulation formats impose strict linearity requirements on the modulator-driver response. We experimentally demonstrate the relation between transmitter nonlinearity and OSNR penalty. Simulations confirm experimental data for a wide range of harmonic distortion.
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