Optical packet switch systems with fiber delay line (FDL) buffers provide high-throughput, bit-
rate independent, energy-efficient, and transparent forwarding. However, the FDL buffer
experiences scalability issues and, thus, cannot accommodate a large amount of network
traffic. In this paper, we first investigate network performance of the FDL buffer. Due to the
discrete-time nature of the FDL buffer, throughput of Transmission Control Protocol (TCP)
applications is not improved drastically in spite of the addition of extra FDLs. Then, we …

(in English) Optical packet switch (OPS) systems with fiber-delay-line (FDL) buffers provide
high-throughput, energy-efficient, and transparent forwarding. However, the FDL buffer
experiences scalability issues, and thus, cannot accommodate a large amount of network
traffic. In this paper, we propose optical and electronic combined buffer architecture. The
combined buffer is composed of FDL buffer and supplementary electronic buffer having
power management functions according to its occupancy. The combined buffer uses only …