IEEE Photonics Technology Letters · 1994 · 16 citations · 6 references
EngineeringElectrical EngineeringMaterials ScienceOptoelectronicsPhotonicsSemiconductor DevicesOptical ModulatorsOptical WaveguidesPhotonic Integrated CircuitsPhotonic MaterialsPolarization OpticsQuantum WellsFabricationPolarizationPolarization ModulationQuantum Well HeterostructuresQuantum Well ModulatorsQuantum Well StructuresStrained Quantum WellsTensile Strain
We propose a novel quantum well (QW) structure with two or four thin barriers inserted in which effective width of the well is mass-dependent. It is very useful for polarization-independent optical modulation. Incorporation of tensile strain is also discussed for further improvement of the polarization insensitivity. Fabrication of a modulator with lattice-matched QW's results in 6-V switching voltage with more than -10-dB extinction (--30 dB maximum) for both TE and TM modes over 29-nm wavelength range. Compared with the quasiparabolic QW, this new quantum well has better fabrication tolerance, wider wavelength range of operation, and higher yield.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Variational calculations on a quantum well in an electric field
G. Bastard, E. E. Méndez, L.L. Chang et al. · Physical review. B, Condensed matter · 1983 · 787 citations