Abstract:High resolution Fabry-Perot fringe spacing measurements are used to determine the group index dispersion of TE and TM polarized modes in single quantum well InGaAs/AlGaAs/GaAs graded index separate confinement heterostructure waveguides. The TE mode data, over a ϳ175 nm range below the quantum well band gap, is compared with model calculations of guided mode dispersion using existing empirical formulas for the index dispersion of Al x Ga 1Ϫx As and GaAs, and different phenomenological expressions for the TE in… Show more
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