A hybrid buffer structured optical packet switch and its scheduling algorithm are presented for a limited number of tunable wave length convertors (TWCs) and internal wave lengths. The hybrid buffer consists of the fiber delay line(FDL) buffer and the electronic buffer. With the proposed algorithm, it could lead realizable packet loss reduction that the LAUC-VF alg orithm with only the FDL buffer does not reach. Also, we optimized the number of TWCs and internal wave lengths of the hybrid buffer structured OPS. For the fully shared TWC structure, the optimum number of TWCs and internal wave lengths to guarantee minimum packet loss is evaluated to prevent resource waste under the hybrid buffer.
Tunable wave length converter(TWC); the hybrid buffer; internal wave lengths; content ion resolution; optical packet switch(OPS); fiber delay line(FDL) buffer