Abstract

Opto-electronic devices, utilizing multiple quantum well (MQW) structures with room temperature excitonic resonances, have many performance advantages over conventional devices.¹ Up to now, nearly all reported MQW devices are based on the resonant absorptive effect. These MQW devices are quite efficient and require very low electrical/optical operating power. Heating has not been a problem. However for complex applications which utilize high density of QW devices, operating at ultra-high data rate and/or under delicate detuning condition for feedback effects, the heating effect should not be overlooked. We report on a detailed experimental study of the temperature dependent (TD) optical properties of a GaAs/AlGaAs MQW waveguide near room temperature. We utilized a grating structure on the waveguide to couple into the waveguide modes, allowing us to study both dispersive and absorptive optical properties of the MQW waveguide.

© 1988 Optical Society of America