Exploració per autor "Tomkos, Ioannis"
Ara es mostren els items 12-31 de 41
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Evaluation of the impact of different SDM switching strategies in a network planning scenario
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialWe compare SDM joint and independent switching strategies in a planning scenario involving a European backbone network. Joint switching can achieve cost savings of 40-50% with a performance similar to that of independent ... -
Experimental comparison of impairment-aware RWA algorithms in a GMPLS-controlled dynamic optical network
(2011)
Text en actes de congrés
Accés obertThe European research project DICONET proposed and implemented a multi-plane impairment-aware solution for flexible, robust and cost-effective core optical networks. The vision of DICONET was realized via a set of cross-layer ... -
Experimental demonstration of a statistical OFDM-PON with multiband ONUs and elastic bandwidth allocation
(Institute of Electrical and Electronics Engineers (IEEE), 2015-01-01)
Article
Accés obertThe statistical orthogonal frequency division multiplexing passive optical network (OFDM-PON) concept with multiband optical network units (ONUs) is experimentally tested with two users and an optical line terminal at 2.5/5 ... -
Experimental demonstration of centralized and distributed impairment-aware control plane schemes for dynamic transparent optical networks
(IEEE Computer Society Publications, 2010)
Text en actes de congrés
Accés obertIn transparent optical networks, the signal experiences the impact of various phenomena that degrade its quality. Considering the impact of physical layer impairments (PLIs) on transparent [1] and highly dynamic optical ... -
Experimental evaluation and improvement methods for low cost transmitters in long reach PONs
(2013-12)
Article
Accés restringit per política de l'editorialIn this paper, we first analyze the degradation stochastic resonance (DSR) effect in the context of adaptive averaging (AD-AVG) architectures. The AD-AVG is the adaptive version of the well-known AVG architecture . It is ... -
Experimental evaluation of path restoration for a centralised impairment-aware GMPLS-controlled all-optical network
(IEEE Computer Society Publications, 2010)
Text en actes de congrés
Accés obertThis paper evaluates a centralised impairment-aware path restoration approach for GMPLScontrolled transparent optical networks. Experimental results on a 14-node network test-bed show successful QoT compliant path restoration ... -
Flexible WDM-PON with Nyquist-FDM and 31.25 Gbit/s per wavelength channel using colorless, low-speed ONUs
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialA remotely seeded flexible WDM network solution with 31.25 Gbit/s based on Nyquist sinc-pulses is demonstrated. The low-speed, colorless ONUs use remote heterodyne detection with electrical up- and down-conversion and SOAs ... -
Free space intra-datacenter interconnection utilizing 2D optical beam steering
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialWe evaluate the performance and benefits of novel integrated Free-Space-Optics (FSO) transceivers, supporting optical beam steering at low power consumption with ns steering speed. A proper intra-datacenter network ... -
GPON unbundling for multioperator access
(Institute of Electrical and Electronics Engineers (IEEE), 2010)
Text en actes de congrés
Accés restringit per política de l'editorialThis work aims at considering different unbundling options for the Local Loop Unbundling (LLU) in order to provide multi-operator access and consider the economical impact for the FTTH NGA entrants to deploy such alternatives. ... -
High capacity optical networks based on space division multiplexing
(John Wiley & sons, 2017-09-01)
Capítol de llibre
Accés restringit per política de l'editorialThis book discusses Elastic Optical Networks (EONs) from an operational perspective. It presents algorithms that are suitable for real-time operation and includes experimental results to further demonstrate the feasibility ... -
Hitless dynamic wavelength allocation in coherent WDM-PONs
(2016)
Comunicació de congrés
Accés restringit per política de l'editorialWe introduce a novel algorithm for real-time ONU activation (¿ - assignment) and reconfiguration (¿ - tuning) in WDM coherent PONs. The algorithm prevents service interruption of lighted channels and it is experimentally ... -
Hitless wavelength assignment in filterless optical access networks
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialAdvantages offered by coherent detection systems in access networks are not limited to the increase of power budget due to the superior sensitivity. Channel selectivity is another intriguing feature offered by coherent systems ... -
Impact of filter sharpness on the performance of elastic optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialElastic optical network (EON) technology arises as a promising solution for future high-speed optical transport networks, inasmuch as it can provide superior flexibility and scalability in the spectrum allocation for ... -
Impact of spatial and spectral granularity on the performance of SDM networks based on spatial superchannel switching
(2017-07-01)
Article
Accés obertSpatially integrated switching architectures have been recently investigated in an attempt to provide switching capability for networks based on spatial division multiplexing (SDM) fibers, as well as to reduce the ... -
Investigation of mid-term network migration scenarios comparing multi-band and multifiber deployments
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialWe compared two different mid-term migration scenarios for core network capacity scaling, realized using either multi-band or multi-fiber systems. We show, under realistic assumptions of current costs, that the multi-fiber ... -
L-Band In-Line Remote Amplification for an Extended WDM/PON Ring Architecture
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009-06-28)
Text en actes de congrés
Accés obertIn this paper, a study on a fully passive WDM/PON ring architecture which reaches 19 km distance, while serving more than 1000 users with symmetric several hundred Mbit/s per user is presented. The design is based on ... -
On the benefits of FMF based data center interconnection utilizing MIMO-less PAM-M transceivers
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Comunicació de congrés
Accés restringit per política de l'editorialSpace division multiplexing (SDM) has been proposed to cost-effectively increase the capacity of optical transmission systems. The cost savings can be realized by introducing some levels of spatial integration of elements. ... -
On the offline physical layer impairment aware RWA algorithms in transparent optical networks: state-of-the-art and beyond
(IEEE Press and Wiley, 2009-02-18)
Text en actes de congrés
Accés obertIn transparent optical networks with no regeneration, the problem of capacity allocation to traffic demands is called "Roting and Wavelength Assignment". Much work on this topic recently has focused on the dynamic case, ... -
Optical subsystems for next generation access networks
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialRecent optical technologies are providing higher flexibility to next generation access networks: on the one hand, providing progressive FTTx and specifically FTTH deployment, progressively shortening the copper access ... -
Options for cost-effective capacity upgrades in backbone optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialUpgrading the capacity of backbone optical networks while delivering contents to the end-users with a reduced cost per bit is a day-by-day challenge of network operators. In this paper, we first discuss several mid-term ...
