We study two topologies: a PanEuropean and a USNET network.
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Given a DSP technique delivering a reduction in required OSNR, we check how many opto-electro-optic (OEO) regenerators can be removed from the topology by selectively upgrade transceivers. We show how Digital Signal Processing (DSP) techniques can provide substantial network benefits in translucent optical networks.
Networking Benefits of Advanced DSP Techniques The advantages of the proposed method are estimated by comparing the number of restoration-3Rs with respect to another method available in the literature. To this aim, we propose an adaptive alternative routing algorithm which is aware of the already deployed restoration-3Rs and favors the computation of alternative restoration paths able to reuse already installed 3Rs. In this work, we focused on the path computation of restoration paths to improve restoration3Rs sharing. An effective computation of restoration paths allows to maximize restoration-3Rs sharing, hence to minimize the network cost. In such networks 3Rs can be either associated to a specific nominal path (nominal-3Rs) or shared among several restoration paths (restoration-3Rs). In generalized multiprotocol label switching (GMPLS)-based optical networks the computation and set-up of alternative paths after fiber failures (restoration) ensure traffic survivability. When designing a network with a required traffic resiliency, operators want to reduce the overall number (hence the cost) associated to optoelectronic devices at the optical layer without incurring in traffic blocking. The cost of translucent optical networks is mainly associated to the deployed optoelectronic devices, some of them used for traffic insertion, others (3R devices) for coping with optical layer transmission constraints (regeneration and wavelength conversion). The optical characterization has been performed in terms of channel efficiency (>85 %) and interchannel cross-talk (<-12 dB).Ī novel adaptive restoration algorithm for cost minimization of translucent optical networks An optical link has been assembled for preliminary (de)multiplexing optical tests in commercial optical fibers. Samples have been fabricated with high-resolution electron-beam lithography on polymethylmethacrylate (PMMA) resist layer spun over a glass substrate. The sorting technique is based on transformation optics: a log-pol transformation determines the final spot position of OAM modes, which shifts proportionally to the carried OAM value. These optical elements have been engineered for integration into next-generation OAM-based optical platforms for mode-division multiplexing (MDM) either for free-space or optical fiber propagation. We present the design, fabrication and optical characterization of miniaturized phase-only diffractive optical elements (DOE) for the (de)multiplexing of optical beams carrying orbital angular momentum of light (OAM). It does not store any personal data.Diffractive optics for OAM-mode division multiplexing in optical fibers The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance".
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