This special issue presents the latest advancements in optical devices, fabrication, manufacturing, and applications in micro- and nano-scale photonics research within Asia, covering a wide range of topics (Fig. XENOptics Limited is a research and development company that specializes in telecommunications and advanced optical systems, which may relate to the field of silicon photonics through its focus on innovative optical solutions and expertise in communication technology. In Asia, this research is advancing rapidly, positioning the region as a leading force in global. Building on this momentum, APE 2027 will return stronger as it expands into three co-located expos, focusing on Photonics, Semiconductor, and Embedded & Electronics. This expanded format. The PIC100 is ST's first silicon photonics technology and one of the most efficient PICs on a 300 mm wafer, thus enabling 200Gbps/lane and even greater bandwidth in the future. The silicon photonics market is vastly driven by datacom pluggable modules due to demand for capacity of very large cloud service providers (DC hyperscalers). The common photonic components are classified into several sections, including on-chip light sources, fiber-to-chip couplers, photonic resonators, waveguide-based sensors, on-chip.