University of Cagliari
none
Low loss (Al)GaAs on an insulator waveguide platform
Pintus, Paolo;
2019-01-01
Abstract
In this Letter, we demonstrate a low loss gallium arsenide and aluminum gallium arsenide on an insulator platform by heterogenous integration. The resonators on this platform exhibit record high quality factors up to 1.5 x 10(6), corresponding to a propagation loss similar to 0.4 dB/cm. For the first time, to the best of our knowledge, the loss of integrated III-V semiconductor on insulator waveguides becomes comparable with that of the silicon-on-insulator waveguides. This Letter should have a significant impact on photonic integrated circuits (PICs) and become an essential building block for the evolving nonlinear PICs and integrated quantum photonic systems in the future. (C) 2019 Optical Society of America.
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