By analyzing the influence of different packet length distribution(PLD)on the optical packet suitch(OPS)performance different content solutions are configured for the OPS with different packet length traffic.The performance of OPS under fixed-length distribution,exponential packet length distribution and the empirical Internet length distribution,with and without FDL are studied respectively.The results of the analysis and simulation experiments show that the OPS without FDL yields the lowest packet loss ratio(PLR)under the Internet empirical length distribution,while the OPS with FDL yields the lowest PLR under the fixed-length distribution.