Performance of the PAC Optical Packet Network

Mark J. Karol, Bernard Glance

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Frequency-division multiplexing offers the potential to support many concurrent transmissions on a single optical fiber. However, for multiuser packet communications with unpredictable user demands (e.g., in a local or metropolitan area network), the coordination and control of access to the FDM channels is difficult. One of the authors recently proposed using a simple protection-against-collision (PAC) circuit to solve this media access problem and achieve full optical connectivity. The PAC system has the potential to interconnect hundreds of ports each transmitting at several gigabits per second. In this paper, we discuss performance aspects of the PAC Optical Packet Network. We analyze the delay-throughput performance of this network for uniform traffic patterns. Our results show that in geographically-distributed applications the maximum achievable throughput (normalized to the transmission rate) is typically between 0.4 and 0.5 per channel. For example, the maximum achievable throughput is between 120 and 150 Gb/s for a 100-channel system with a 3-Gb/s transmission rate. In a centralized switch, the (normalized) maximum achievable throughput can approach 0.8 per channel.

Original languageEnglish
Pages (from-to)1394-1399
Number of pages6
JournalJournal of Lightwave Technology
Volume11
Issue number8
DOIs
StatePublished - Aug 1993

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