Conference Paper

Proposal and Evaluation of Photonic Switching Architectures for High-Capacity Optical Access Networks

DSIF-FEEC, Univ. of Campinas, Campinas, Brazil
DOI: 10.1109/AICT.2010.39 In proceeding of: Telecommunications (AICT), 2010 Sixth Advanced International Conference on
Source: IEEE Xplore

ABSTRACT Considering that optical packet/burst switching (OPS/OBS) are considered strong candidates for metropolitan networks in the near future, this work is a contribution evaluating the performance of some network models based on OPS/OBS mesh/ring architectures. We use both the conventional models of ring and mesh (Manhattan Street type), and slightly modified models implementing new structures, with cases of unidirectional and of bi-directional links. Our main goal here is to find through computer simulations the better architectures, in terms of (higher) capacity and (lower) latency. We choose the parameters average number of hops, total number of deflections and packet loss fraction as metrics for network performance. We observe that networks with best performance are the ones with largest number of different paths between nodes.

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    ABSTRACT: This paper presents the results and analysis of semiconductor optical amplifiers (SOA) as applied in optical nodes for Photonic switching in OPS/OBS future networks. By the same token detailed characterization is provided to investigate physical constraints of optical power, gain and noise figure of SOAs. By using external cavity tunable laser and DFB laser sources, we verify that although the SOA gain is not sensitive to input source a significant influence on the noise figure (NF) of the amplifier is observed. Different analytical expressions for NF are used and consequently lead to different results, illustrating different aspects of devices.
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    [Show abstract] [Hide abstract]
    ABSTRACT: This paper presents the results and analysis of semiconductor optical amplifiers (SOA) as applied in optical nodes for Photonic switching in OPS/OBS future networks. By the same token detailed characterization is provided to investigate physical constraints of optical power, gain and noise figure of SOAs. By using external cavity tunable laser and DFB laser sources, we verify that although the SOA gain is not sensitive to input source a significant influence on the noise figure (NF) of the amplifier is observed. Different analytical expressions for NF are used and consequently lead to different results, illustrating different aspects of devices.