What is the upstream wavelength range used by EPON?

The upstream wavelength range used by Ethernet Passive Optical Networks (EPON) is specifically defined within the 1260 to 1360 nm range. This range is crucial because it allows for efficient data transmission from the optical network units (ONUs) back to the optical line terminal (OLT) in the fiber network setup.

Understanding this wavelength range is essential for network engineers and technicians as it allows devices in an EPON to effectively communicate over the fiber optic link while minimizing interference and ensuring the integrity of the signal. This is important especially in shared network environments like EPON, where multiple ONUs operate on the same optical fiber infrastructure.

The selected wavelength range is chosen for its balance of performance, cost-efficiency, and compatibility with existing passive optical network components, enabling high data rates with relatively low signal attenuation. Other wavelength ranges mentioned are not utilized for upstream traffic in EPON systems.