The PhD in Optical Engineering at Chongqing University (CQU) is a distinguished four-year program specifically structured for international students and conducted entirely in English. This program delves deep into the fundamental principles and innovative applications of optical engineering, equipping students to make impactful contributions to advancements in this dynamic field. Over the course of the program, students engage with a diverse array of subjects, including laser technology, photonics, optical communication, imaging systems, and optical materials. The curriculum combines rigorous theoretical education with practical laboratory experience, allowing students to apply their knowledge to real-world challenges in optics. CQU is equipped with cutting-edge research facilities, where students have the opportunity to participate in groundbreaking research under the guidance of experienced faculty members who are both educators and active researchers. The program encourages interdisciplinary collaboration with other university departments, enabling students to work on innovative projects that overlap with fields like electrical engineering and materials science. Situated in the vibrant city of Chongqing, known for its rich culture and rapid economic growth, students benefit from a supportive environment that fosters cultural exchange and broadens perspectives. Graduates will emerge as experts ready to excel in academia, industry, and research organizations, effectively tackling complex optical engineering problems.