From the industry and technology point of view,the development status of optical communication devices is summarized. The current development level of China's optical communication devices is introduced in detail, and the gap with the international leading level is described. Photonic integration circuit (PIC) is the mainstream direction of future development of optical devices, and Ⅲ-Ⅴ group material and silicon-based material are more widely seen as the two camps in terms of the future optical integration technology by the industry, and they will change the design and future of the optical devices.

optical fiber communication  /  optical fiber components  /  photonic integration circuit