Optical budget control is a key issue to FTTH-based Optical Distribution Network(ODN) construction.On the basis of a few practical projects
this paper analyzes the composition of the existing ODN optical power attenuation and the measures for improvement
presents the guiding principle in project design for reducing ODN optical attenuation and the key points in construction and describes the implementation of the relevant specifications in actual projects and the test results.Finally
it analyzes the differences between the theoretical calculations of the ODN optical attenuation and the practical test results
providing valuable experience for future operators in FTTH project construction.