Proceedings PaperAttenuation of leaky waves in GaAs/AlGaAs MQW waveguides formed on a GaAs substrate
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The transfer matrix method is employed to analyze the propagation of leaky waves within planar multiple quantum well (MQW) waveguides implemented in the GaAs/AlGaAs material system and formed on GaAs substrates. The analysis provides an accurate picture of attenuation of both TE and TM polarized waves at the operational wavelength of 1.15 micrometers . Particular attention has been drawn to the variation of the loss coefficient as a function of parameters of the AlGaAs buffer layer separating the MQW core and the high index GaAs substrate.