Design of novel passive optical switching system using shared wavelength conversion with electrical buffer

Abstract

Abstract:We propose a novel optical switching system equipped with shared wavelength converters with electrical buffers. Simulation results show that the proposed system significantly reduces the blocking probability below 10 −6 with low buffering delay. We present benefits of the proposed switching system compared with the conventional dedicated wavelength converter scheme in terms of blocking probability and average delay time. The proposed switching system is believed to be a technoeconomically feasible and implementable solution for optical packet/burst switching with current optical technologies.

Analysis of PLR for Shared Switch Fabrics

“…In a shared buffer design, a switch module with intra-module buffer sharing can enhance PLR by simply increasing the buffer sharing ratio [1]. One can consider a graceful switch node upgrade in a modular switch design as illustrated in Fig.…”

Resource allocation for contention-resolution strategies in OPS

“…Previous research with shared converter architectures is based on bufferless packet/burst switch modelling [6], blocking probabilities with buffered converters in OPS/OBS [7], and an analysis of some contention resolution strategies in OBS [8]. In contrast to that previous work, this paper presents a performance evaluation over an optical packet switching architecture with a shared converter pool and output buffers considering two strategies to minimize either, the packet delay or the number of wavelength conversions.…”

Multi-granular traffic scheduling in hybrid optical interconnection

“…Optical technology corresponding to electronic Random Access Memories (RAMs), which are typically used to solve contention in electronic packet switches, is not yet available, although Fiber Delay Lines (FDLs) or slow light could be used to size limited optical queues [13]. With the aim of answering the need of optical industry to design optical packet switches which employ available components, hybrid switch architectures have been proposed [14], [15]. Hybrid switches apply both wavelength and time domains for contention resolution.…”