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Proceedings Paper

Contention avoidance in slotted optical networks
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Paper Abstract

All-Optical networks with the DWDM technology provide huge bandwidth and are the sole approach for transporting huge network traffic. However, this bandwidth is too coarse to be used by a single user and this is why the Optical Time Division Multiplexing (O-TDM) has been deployed in the optical networks to provide finer granularity and improve bandwidth usage. In contention-based slotted-optical networks, because there is no collaboration among the ingress switches, the data slots on the same wavelength and time-slot destined to the same destination may collide. In this paper, we detail contention avoidance schemes in two software and hardware categories and show that edge switches can have an important role in reducing loss rate in optical networks by transmitting traffic to each destination with equal probability (symmetric traffic transmission) and balancing traffic load on the wavelength channels. We also show that edge switches can have an important role in the loss rate reduction issue in optical networks by reducing traffic load and using more wavelengths/fibers to carry the same traffic.

Paper Details

Date Published: 13 October 2005
PDF: 7 pages
Proc. SPIE 5970, Photonic Applications in Devices and Communication Systems, 59702F (13 October 2005); doi: 10.1117/12.630012
Show Author Affiliations
Akbar Ghaffar Pour Rahbar, Univ. of Ottawa (Canada)
Oliver Yang, Univ. of Ottawa (Canada)

Published in SPIE Proceedings Vol. 5970:
Photonic Applications in Devices and Communication Systems
Peter Mascher; John C. Cartledge; Andrew Peter Knights; David V. Plant, Editor(s)

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