Electronics Letters · 1986 · 47 citations · 0 references
EngineeringElectrical EngineeringMaterials ScienceElectronic MaterialsOptoelectronicsPhotonicsAbsorption SpectroscopyElectro-optic EffectsModulationOptical ModulationOptical ModulatorsOptical SpectroscopyElectro-absorption ModulationElectro-absorption ModulatorsElectro-optic ModulatorsElectroabsorption ModulationElectroabsorption ModulatorsModulator DesignSemiconductor Optical ModulatorsSpectral Line Broadening
The first measurements of dynamic spectra of an InGaAsP/InP electroabsorption light modulator under high-frequency large-signal modulation are reported. A spectral broadening factor α was determined from the relative sideband strength to the carrier, and it decreased with increasing operating electric field in the modulator. The estimated α-value for full modulation was |α| = 2.3, which can be reduced by designing a modulator to give a more effective change of electro-absorption.