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8 March 2014 Photonic Mach-Zehnder modulators driven by surface acoustic waves in AlGaAs technology
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In this paper, photonic devices driven by surface acoustic waves and operating in the GHz frequency range are presented. The devices were designed and fabricated in (Al,Ga)As technology. In contrast to previously realized modulators, where part of the light transmission is lost due to destructive interference, in the present devices light only switches paths, avoiding losses. One of the devices presents two output channels with 180◦-dephasing synchronization. Odd multiples of the fundamental driving frequency are enabled by adjusting the applied acoustic power. A second and more complex photonic integrated device, based on the acoustic modulation of tunable Arrayed Waveguide Gratings, is also proposed.
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A. Crespo-Poveda, B. Gargallo, I. Artundo, J. D. Doménech, P. Muñoz, R. Hey, K. Biermann, A. Tahraoui, P. V. Santos, A. Cantarero, and M. M. de Lima Jr. "Photonic Mach-Zehnder modulators driven by surface acoustic waves in AlGaAs technology", Proc. SPIE 8989, Smart Photonic and Optoelectronic Integrated Circuits XVI, 898905 (8 March 2014);

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