Widely Tunable RF Signal Generation Using an InP/Si 3 N 4 Hybrid Integrated Dual-Wavelength Optical Heterodyne Source

Photonics-based techniques spearhead the generation of high-frequency signals in the millimeter-and Terahertz wave, crucial for ultrabroadband mobile wireless link development. Photonic integration is enabling to provide the photonic approach with added advantages of energy-efficiency, flexibility and scalability, in addition to signal quality. We present an optical heterodyne system based on a no...