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A comprehensive analysis of photonically assisted microwave frequency multiplication based on two cascaded Mach–Zehnder modulators (MZMs) is presented. The expressions, including all harmonics, are entirely general in terms of the extinction ratio (EXT) of MZM. A theoretical derivation that induces operating conditions is developed to achieve frequency quadrupling, sextupling, and octupling. The impact...
The impact of modulator chirp on single sideband (SSB) modulation radio over fiber (RoF) link is investigated and simulated. For a nonideal modulator with low extinction ratio, optimum drive signal unbalanced ratio could be applied to minimize the power variation of targeted signal and obtain a high quality microwave signal.
The effect of Mach-Zehnder modulator (MZM) direct current (DC) extinction ratio on single sideband (SSB) radio over fiber (RoF) link is analyzed and simulated, finite extinction ratio and drive signal unbalanced ratio of dual-drive MZM (DD-MZM) are considered. Our results show that power variation of target signal increase and harmonic suppression ratio decrease with the decline of extinction ratio...
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