The paper presents a fabrication platform based on silicon nitride embedded in silica on silicon wafers. Long Bragg gratings were fabricated for narrow linewidth lasers. On these laser we obtained a continuous tuning range of 0.16 nm and a discontinuous tuning range of 1.5 nm.
Integrated optical isolators have relied on bonded magnetic materials for isolation > 30dB. However, such materials are incompatible with CMOS processes. We propose a tandem ring modulators to achieve high-isolation and a small footprint. It uses plasma dispersion effect, thus achieving low-insertion loss and high-speed modulation.
Co-integrated neuromorphic photonic and electronic processors promise orders of magnitude improvements in both speed and energy efficiency over purely digital electronic approaches. We discuss neuromorphic photonic systems and their application to deep convolutional neural networks inference.