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On the way towards an architecture for a new QoS-supporting and scalable Internet, the IPover-photonics approach seems to be very promising. One possible solution in this domain is optical burst switching (OBS), a concept combining advantages of optical circuit and packet switching. After an introduction to OBS as well as the reservation mechanism(More)
Optical burst switching (OBS) has attracted interest as a transport network architecture for the future optical Internet. As OBS relies on statistical multiplexing efficient contention resolution is a key issue in order to achieve a low burst loss probability. Basically, contentions can be resolved by wavelength conversion, deflection routing and delaying(More)
This paper presents a summary of Optical Burst Switching (OBS) research within the VI framework program e-Photon/ONe network of excellence. The paper includes network aspects such as routing techniques, resilience and contention resolution, together with burst switch architectures. On the other hand, we also discuss traffic analysis issues, Quality of(More)
In this paper, we introduce an integrated analysis of quality-of-service (QoS) performance and technology for optical burst switching (OBS) nodes. Such an integrated approach is needed to comprehensively assess OBS nodes as both burst losses and signal degradation limit their maximum achievable throughput. We apply this analysis to the tune-and-select (TAS)(More)
This paper presents novel network architecture, called optical burst transport network (OBTN), which can efficiently transport burst data over a virtual topology and reduce the port count of optical burst nodes. In OBTN nodes, bursts from attached optical feeder networks, e.g., metro networks, are multiplexed and transported to their egress OBTN node in one(More)
politan area networks. In DBORN, metro clients like enterprise networks are connected to the optical metro-ring by edge nodes which share the wavelength channels on the ring. In order to allow for a high-speed optical interface on the upstream wavelengths while avoiding active optical switching components, a carrier sense multiple access/collision avoidance(More)
In this paper, we show the physical limitations of semiconductor optical amplifier (SOA)-based switching nodes for optical burst switching (OBS). The investigation covers one basic tune-and-select (TAS) architecture, as well as extensions with wavelength converters of limited tuning range (LTR) and dedicated and shared fiber delay line (FDL) buffers. Their(More)
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