This symposium aims to bring together the researchers interested in state-of-the-art technologies on optical communication systems and optical networks, from components to systems, networks and applications. The topics of interest include but not limited to: Advanced modulation and coding techniques for optical communications High-capacity optical transmission systems Ultraviolet and visible light communication systems Optical wireless communication systems Underwater optical communications Software-defined optical networks Next-generation optical networks architectures for core and access networks Energy efficiency, reliability and security in optical communication networks Fiber-Wireless communication systems Optical networking for 5G cellular, future Internet, and data center networks