Terça-feira, Novembro 22, 2022, 16:00h

Título do Colóquio: "On-chip heterogenous integration of silicon and chalcogenides for integrated microwave photonics applications"

Resumo: Brillouin scattering is a light–sound interaction process that occurs when photons are scattered from a medium by induced acoustic waves. Stimulated Brillouin Scattering (SBS) is the strongest nonlinear process and manifests optically in ultra-narrow resonances. In this talk, I will describe a radio frequency (RF) signal-processing chip device, based on using these narrow resonances. I will highlight how our RF cancellation technique is used to harness a modest SBS gain in silicon and chalcogenides, and to create a high-performance energy efficient microwave photonic notch filter. I will describe our latest nanofabrication approach, which combines the hybrid integration of the non-linear glass chalcogenide with silicon. We used this technology to link the best properties of these materials and to demonstrate the first Brillouin laser on a CMOS compatible platform In the second part of my talk, I will present the first heterogeneously integrated Brillouin circuit on an active photonic chip that incorporates electro-optic modulators. This represents a major step towards fully integrated high-resolution Brillouin microwave photonic systems.

Obs.: haverá Coffee-break
Organizadores: capítulo de estudantes de OPTICA