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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Papers
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21 Mar 2010
TL;DR: This paper discusses WDM-based optical access networks beyond 10G-EPON and XG-PON, and describes drivers and requirements as well as possible solutions.
Abstract: This paper discusses WDM-based optical access networks beyond 10G-EPON and XG-PON. It describes drivers and requirements. Challenges as well as possible solutions are outlined.
24 citations
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01 Oct 1990TL;DR: An asynchronous time-division multiplex optical communication system comprises: a switching network, user transmitter circuits, user receiver circuits, and broadcast servers connected by optical lines to the switching network as mentioned in this paper.
Abstract: An asynchronous time-division multiplex optical communication system comprises: a switching network, user transmitter circuits, user receiver circuits and broadcast servers connected by optical lines to the switching network. The switching network comprises an optical spectro-time-division switching network, a control processor unit and a clock unit. The spectro-time-division switching network is connected optically to the user transmitter circuits, to the user receiver circuits, to the broadcast servers and to control transmitter, signalling transmitter, control receiver and signalling receiver circuits of the control processor unit. The clock unit is connected by a first line to the switching network and by a second line to the control processor unit which is connected by a control bus to the spectro-time-division switching network. The system uses conjointly a first set of optical frequencies for transmission and a second set optical frequencies for switching.
24 citations
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11 Sep 2001
TL;DR: In this paper, the authors proposed an optical bridge for selectively transferring optical channels between two bidirectional wavelength division multiplexed optical communication systems, where an optical coupler and channel selector are configured to select one or more optical channels from a first WDM optical signal.
Abstract: The present invention relates to a bidirectional optical network including an optical bridge for selectively transferring optical channels between two bidirectional wavelength division multiplexed optical communication systems. Two counter propagating WDM optical signals are carried on each bidirectional waveguide. An optical bridge is interposed between the bidirectional waveguides and includes an optical coupler and channel selector configured to select one or more optical channels from a first WDM optical signal and a second optical coupler and channel selector configured to select one or more optical channels from the counter propagating WDM optical signal. At least one optical path is positioned between the first bidirectional optical waveguide and the second bidirectional optical waveguide which carries at least the selected one or more first optical channels to an optical combiner interposed along the second bidirectional optical waveguide. In this manner, the selected optical channels are combined with either counter propagating WDM signal on the second bidirectional waveguide. Optionally, the optical bridge can be reciprocal such that channels from each of the four WDM optical signals may be transferred between the bidirectional waveguides.
24 citations
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18 Sep 2011TL;DR: Elastic optical path network has the potential to advance networks, however, the requirements and benefits differ among the users (carriers/service providers and leased line users), network segment (core or metro), and level of operations (static or dynamic).
Abstract: Elastic optical path network has the potential to advance networks, however, the requirements and benefits differ among the users (carriers/service providers and leased line users), network segment (core or metro), and level of operations (static or dynamic).
24 citations
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TL;DR: A feasible V-BVT architecture that can be a part of a software-defined optical network and achieves independence in virtual transceivers control and management in the control plane, while maintaining the coexisting and isolation features in the physical layer is presented.
Abstract: In order to serve the future high-performance network-based Internet applications, optical network virtualization is proposed to offer each application type a dedicated virtual optical network (VON). Virtualizeable bandwidth variable transceiver (V-BVT) is a key enabler in supporting the creation of multiple VONs. In this paper, we present a feasible V-BVT architecture that can be a part of a software-defined optical network. The proposed V-BVT has a novelty to offer independent operation, control, and management abilities to the clients or higher level network controllers. In addition, a specific V-BVT virtualization algorithm is proposed, in order to enable the efficient creation of multiple coexisting, but independent virtual transceivers that share the same V-BVT physical resources. The virtual transceiver can provide specific bit rate, subcarrier, modulation format, and a corresponding baud rate to each VON, based on the requirement of the VON demand, V-BVT resources availability, and optical network status. We further realize the proposed V-VBT architecture on an experimental platform with a software-defined network controller. The V-BVT resource allocation through the proposed virtualization algorithm is also performed using the extended OpenFlow protocol. The proposed and experimentally demonstrated V-BVT achieves independence in virtual transceivers control and management in the control plane, while maintaining the coexisting and isolation features in the physical layer.
23 citations