Optical Line Terminal (OLT) routers represent a crucial component of optical networks and broadband infrastructures. These devices are used to manage optical signals in Gigabit Passive Optical Networks (GPON). OLT routers facilitate the distribution of optical signals to end-users, ensuring high-quality internet connectivity. They are often modular, supporting various optical transceivers and providing functionalities such as bandwidth management, access controls, and other network features.