This course is suitable for optoelectronic and microelectronic year three undergraduates, as it is very basic yet important. In this class, students will understand and grasp several aspects of photonics: the propagation of light in the medium, optical waveguides and optical fibers, polarization and modulation, light emitting diodes, lasers, photodiodes and detectors, which allows students to systematically comprehend and understand optics domain knowledge.