A Surjective-Mapping Based Model for Optical Shared-Buffer Cross-Connect

Abstract

Abstract-A Surjective-Mapping based Model (SMM) is developed to evaluate the performance of a slotted optical shared-buffer cross-connect. The model is simple, accurate, and yet provides comprehensive performance characteristics of the switch. The model also overcomes the limitations of traditional Markovian based models in evaluating moderate to large switches, associated with the explosion of number of states. The model is verified using simulation results for different switch sizes and different numbers of delay lines. The model enables dimensioning the switch architecture to meet the target performance. Performance of optical shared-buffer cross-connect is analyzed in detail, in terms of blocking probability, delay distribution, and delay line utilization.

Control Plane Functions and Multiple Connection Method in Switched Optical Network

“…The circuits in optical networks are being handled by optical add-drop multiplexers (OADMs) and optical cross-connects (OXCs). These critical network elements sit at junction points in optical backbones and enable carriers to string together wavelengths in order to provide end-to-end connections [9]. ISPs might also find it less expensive to move large aggregates of IP packets in a purely optical format at transit points rather than the alternative: converting the optical signal to electronic format, processing at the IP layer, and converting back to optical for the next leg of the journey [10].…”

All-optical cross-connect using feed-forward optical buffers with and without QoS: an analysis

“…An all-optical RAM, however, is not available to permit the same resolution approach in the optical domain. Additionally, implementing buffering in optical networks would be very costly [5]. Therefore, other contention resolution schemes have been proposed that exploit wavelength dimension [14], space dimension [10], and time dimension [5].…”