IEEE Photonics Technology Letters · 1997 · 51 citations · 8 references
EngineeringElectrical EngineeringOpticsOptoelectronicsPhotonicsModulationNonlinear OpticsOptical Communication SystemsOptical ModulationOptical ModulatorsPhotonic Device SimulationChirp In Optical ModulatorsDispersion ManagementLithium NiobateLithium Niobate ModulatorsLithium Niobate PhotonicsMach-zehnder ModulatorsNumerical Device SimulationNumerical Simulation
It is shown through numerical simulation that residual frequency chirping in lithium niobate external modulators, which accompanies devices with a finite-optical extinction ratio, always degrades the performance of lightwave systems that use optical AM-PSK duobinary signaling. This is unlike binary systems which will exhibit either an improvement or degradation, depending on the polarity of residual chirp.
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