PART 1: Advances in Fundamental Research.- Enhanced optical properties of Si nanocrystals.- Inversion-based lasing and Raman lasing in doped silicon.- Reduced graphene oxide-Ge quantum dot nanocomposites.- Stimulated emission in the near infrared from disordered Ge dots.- Lasing in strained Ge microbridges.- Obtaining efficient light emission from crystalline Ge nanostructures.- Spin-based light emission in group IV semiconductors.- Exceptional points sensing with silicon photonics.- Topological photonics in array of silicon microresonators.- Entangled photon generations in silicon photonics.- Sn lasing in silicon.- PART 2: New Technologies.- Parallel digital gradient search technique for rapid automated alignment of devices on silicon photonics integrated circuits.- All optical neural networks based on silicon optical chips.- Transformative optics in regard to planar silicon photonic devices for optical switching and optical computing techniques.- Subwavelength grating periodic structures in silicon-on-insulator technology.- Silicon photonics transceivers for data centers.