主题词：Photonic and Optical Devices; Advanced Fiber Optic Sensors; Optical Network Technologies; ZnO doping and properties; Chalcogenide Semiconductor Thin Films; Semiconductor Lasers and Optical Devices; Gas Sensing Nanomaterials and Sensors; Luminescence Properties of Advanced Materials; Advanced Photonic Communication Systems; Conducting polymers and applications; Photonic Crystal and Fiber Optics; Advanced Fiber Laser Technologies; Phase-change materials and chalcogenides; Optical Coatings and Gratings; Quantum Dots Synthesis And Properties; Analytical Chemistry and Sensors; Solid-state spectroscopy and crystallography; GaN-based semiconductor devices and materials; Advanced Photocatalysis Techniques; Catalytic Processes in Materials Science; TiO2 Photocatalysis and Solar Cells; Semiconductor materials and interfaces; Copper-based nanomaterials and applications; Optical Systems and Laser Technology; Glass properties and applications