Lin Li, Jitender Deogun, and Stephen Scott. Performance analysis of optical packet switches with a hybrid buffering architecture [Invited Paper]. The Journal of Optical Networking, 3(6):433–449, 2004.
Abstract
JON Entry

Abstract

Optical fiber delay line (FDL) is currently the only technology available to implement optical buffering. Feed-forward and feedback are two types of FDL structures in optical buffering, both of which have advantages and disadvantages. In this paper, we present a novel architecture for WDM optical packet switches with an effective hybrid FDL buffering configuration that combines the merits of both feed-forward and feedback schemes. The core of the switch architecture is a number of arrayed waveguide gratings (AWG) and tunable wavelength converters (TWC). It requires smaller optical device sizes and fewer wavelengths and suffers from less noise than feedback architecture. At the same time, it supports preemptive priority routing like feedback architecture. Empirical results show that the proposed new switch architecture significantly reduces packet loss prob-ability.

Keywords: Optical buffering, hybrid FDL architecture, arrayed waveguide grating, tunable wavelength converter.

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Last modified 26 February 2004.