Optical buffering in the core nodes of Optical Burst Switching（OBS）networks can effectively resolve contentions in burst data packet.This paper first analyzes the deficiencies of the conventional optical buffer structures and then proposes an improved master-slave optical buffer structure and a weighted priority-based balancing scheduling algorithm to overcome the deficiencies of the conventional fair scheduling algorithm and priority scheduling algorithm.Comparison results show that this algorithm demonstrates certain superiorities in terms of system waiting time

average waiting time and space utilization.