Optical Line Terminal (OLT) Core of Optical Access Network

Managing OLT optical power budgets deals with the need to ensure that the optical signals transmitted from the OLT to the ONUs, and from the ONUs back to the OLT, are sufficiently powerful. The power budget includes fiber attenuation, the losses due to connector, and the sensitivity of the optical modules on both ends. Accurate calculations of the power budget determines what is the maximum distance between the OLT and the ONUs the OLT can communicate with. Regular monitoring and adjusting the power of the optics helps avoid communication reliability issues and signal problems.