Topic
Optical Transport Network
About: Optical Transport Network is a research topic. Over the lifetime, 6055 publications have been published within this topic receiving 85783 citations.
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Patent•
28 Jan 2002TL;DR: In this article, the content of entities for transportation across an existing network are mapped into a series of subframes and are virtually concatenated across the network, each subframe is assigned a sequence indicator, which allows the original entity to be assembled at a remote node.
Abstract: A communications network including nodes which permit networks to be tunnelled across intermediate networks. The present invention has application, in particular, to SDH networks, SONET and OTN. The content of entities for transportation across an existing network are mapped into a series of subframes and are virtually concatenated across the network. Each subframe is assigned a sequence indicator, which allows the original entity to be assembled at a remote node.
50 citations
Proceedings Article•
16 Oct 2009
TL;DR: Optical technologies, in comparison with electronic technologies, need less power to switch high bitrates and to interconnect farther subsystems.
Abstract: Optical technologies, in comparison with electronic technologies, need less power to switch high bitrates and to interconnect farther subsystems. The paper discusses with specific examples how optics can improve the energy efficiency of networks and switches.
50 citations
31 Oct 1999
TL;DR: The overall system architecture is designed to facilitate the introduction of optical switching components as they become more highly integrated and exploits the sophistication of modern electronic processing to perform the routing and higher level control operations needed in realistic, large scale networks.
Abstract: WDM burst switching is an approach to building very high capacity routing switches based on optical data paths and electronic control. Burst switches assign user data bursts to channels in WDM links on-the-fly in order to provide efficient statistical multiplexing of high rate data channels. The overall system architecture is designed to facilitate the introduction of optical switching components as they become more highly integrated. At the same time it exploits the sophistication of modern electronic processing to perform the routing and higher level control operations needed in realistic, large scale networks.
50 citations
Patent•
05 Feb 2003
TL;DR: In this paper, the authors proposed a flooding algorithm to share the link utilization among the remaining nodes in an optical network by calculating the link utilisation observed by the link observation section and by each remaining node.
Abstract: An optical network includes links and nodes. In each node, a control section sets an optical path to be used for optical transport. A switching section performs switching of the optical path. In the control section, a link observation section observes the wavelength of signal light that is being transmitted through a link connected to the node as the utilization of the link. A flooding section notifies each of the remaining nodes of the link utilization and acquires a link utilization observed by each of the remaining nodes so as to share the link utilization between the nodes. An optical path calculation section selects the optical path to be used for optical transport by calculation using the link utilization observed by the link observation section and the link utilization observed by each of the remaining nodes. An optical path setting section sets the optical path selected by the optical path calculation section to the optical path to be used for optical transport.
50 citations
TL;DR: The asynchronous digital optical network is aimed to combine the advantages, and overcome the drawbacks, of existing approaches to photonic networking, based on digital optical transmission and processing, which offers the prospect of almost infinite scalability.
Abstract: This paper outlines the concept of the asynchronous digital optical network, which is aimed to combine the advantages, and overcome the drawbacks, of existing approaches to photonic networking. The network is based on digital optical transmission and processing, which offers the prospect of almost infinite scalability. Optical transmission throughout the network is in burst mode, using a standard digital optical signal format. The main defining feature of the asynchronous network is that the network nodes (in which the optical processing and routing take place) do not share global synchronization at the bit level. Instead, the nodes each operate with independent bit-level clocks. This approach removes the architectural constraints found in synchronous networks. An essential component of the network is the asynchronous digital optical regenerator. Various design and performance aspects of this new type of regenerator are analyzed.
50 citations