This white paper introduces Ultra wideband optical transmission (UWOT) technologies, showing technical issues that need to be addressed and providing information to potential users / operators on how to implement the UWOT technologies into APN. First, we outline several use cases and show application scenarios for UWOT. Then, we delve into the core technology areas of UWOT, including multiband transmission, space-division multiplexing, and node architecture. After referring to the role of relevant standardization bodies, we consider potential timelines for UWOT implementation. The evolution of UWOT technologies and its implementation in various applications will enable the realization of ultra-high-capacity APN by 2030.
