Performance comparison between elastic optical networks and multi-rate optical networks, using different spectrum allocation algorithms to prevent fragmentation.

Passive optical networks (PONs) will be the pervasive choice in the design of next-generation access networks. One possible solution to implementing passive optical access networks is to rely on wavelength-division multiplexing (WDM). Here we investigate the problem of providing real-time service to both hard and soft real-time messages in conjunction with a conventional best-effort service in ...

In this paper we present new optical local area networks for fiber-to-the-desk application. Presented networks are expected to bring a solution for having optical fibers all the way to computers. To bring the overall implementation costs down we have based our networks on short-wavelength optical components, multimode optical fibers, multimode polymer-based integrated-optic devices and widely u...

We have observed the steady progress that has been made in optical networking technologies thanks to of the extensive efforts made in the research and development of optical networks. We believe that further progress should be made as optical networks are expected to play important roles in future broadband and ubiquitous networks by expanding the network capacity, providing high-quality commun...

Metropolitan telecommunications networks is a recent network concept imported from the data communication world, which is gaining considerable importance in present/near future networks. The emerging of optical transport networks (OTN) which uses Wavelength division multiplexing (WDM), associated to the concept of all-optical networking is shaping the evolution scenarios for the Metropolitan ne...

Using optical network technology in grid networks, we are able to achieve much higher bandwidth requirements, essentially eliminating the bottleneck that throttled the previous generation of grids. However, we cannot apply the same algorithms to optical grid networks as we would on traditional grid networks since they have other physical constraints and conditions that need to be satisfied. As ...

Optical technologies form the key foundations for transport networks used by all major telecommunication carriers. Those networks are made up of equipment supplied by different manufacturers, and utilize different optical switching and transmission technologies. These give rise to distinct islands or "domains" of network nodes of different capabilities. Further, administrative segmentation of n...

Due to the traditional realization of distributed-queue dual-bus (DQDB) networks, the optical network with the technique of time-division multiple access (TDMA) has the unfair-access problem. This problem protects users from adopting optical TDMA networks. In order to establish a fair-access medium-sharing environment on optical networks, this paper analyzes the performance of full-load TDMA ne...

Combining the existing approaches for optical intelligence and the speed and capacity of light is undoubtedly the only viable strategy for building future-proof, highspeed networks. Future optical networks are also expected to provide added value through service quality. However, the performance parameters included in current service level agreements (SLA) require the termination of a channel (...

The WDM network is an optical network to employ the wavelength division multiplex WDM technology. This technology provides transmission of data on different optical wavelengths through the same optical fiber. We will concentrate on WDM network only, where each wavelength corresponds to a data communication channel. Moreover, we deal with all-optical networks. In these networks, the optical sign...