HPON increases access bandwidth by using the wavelength division multiplex technology.But the point-to-point topology of its RN affects the multicast replication.This paper presents an HPON-based multicast implementation scheme and enhances its efficiency using Single-Copy Broadcast(SCB).And then it improves the functions and structures of the original OLT
RN and ONU
implementing the control of the multicast stream.Finally
it conducts comparison tests on the multicast performances of the system before and after the improvement.The results indicate that the design can improve the multicast performance of HPON.