A5069633689- Optical Network Technologies
- Advanced Photonic Communication Systems
- Advanced Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Power Line Communications and Noise
- Liquid Crystal Research Advancements
- Phase Change Materials Research
- Photonic Crystals and Applications
- Multimedia Communication and Technology
- ICT Impact and Policies
- Adsorption and Cooling Systems
- IPv6, Mobility, Handover, Networks, Security
- Color Science and Applications
- Advanced Fiber Laser Technologies
- Physics and Engineering Research Articles
- Software-Defined Networks and 5G
- Thermal properties of materials
- Satellite Communication Systems
- Advanced MIMO Systems Optimization
- Energy Efficient Wireless Sensor Networks
- Radio Frequency Integrated Circuit Design
- Advanced Battery Technologies Research
- Surface Roughness and Optical Measurements
- Electric and Hybrid Vehicle Technologies
Nokia (United States)
2010-2023
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2018-2022
Ghent University
1990-2016
The University of Melbourne
2016
Université Claude Bernard Lyon 1
2016
École Normale Supérieure de Lyon
2016
Institut national de recherche en informatique et en automatique
2016
iMinds
2016
Alcatel Lucent (Germany)
1995-2014
Lucent Optics (United States)
2012
Power trends in communication networks are analyzed using a transaction-based model. Traffic models developed for North America and used to evaluate the relative power of wireline mobile through 2020. An ideal case aggressive network-efficiency improvement measures is evaluated within this framework shown lead roughly unchanged consumption over next decade. Implications future technology requirements discussed.
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text P. Vetter, "Next Generation Optical Access Technologies," in European Conference and Exhibition Communication, OSA Technical Digest (online) (Optica Publishing Group, 2012), paper Tu.3.G.1. Export BibTex Endnote (RIS) HTML Plain alert Save article
Polymer layers can cause memory alignment of nematic liquid crystals. We describe an experimental method to characterize this effect. studied the temperature dependence on polyvinyl alcohol coatings. also investigated influence time span during which is generated. propose adsorption-desorption mechanism by we explain our observations in a reasonable way.
A functional demonstration of bit-interleaving TDM downstream protocol for passive optical networks (Bi-PON) is reported. The proposed presents a significant reduction in dynamic power consumption the customer premise equipment over conventional protocol. It allows to select relevant bits all aggregated incoming data immediately after clock and recovery (CDR) and, hence, subsequent hardware run at much lower user rate. Comparison experimental results FPGA-based implementations Bi-PON XG-PON...
26-Gbps serial transmission over 40-km is demonstrated for downstream PON. Duobinary detection allows a 7-GHz APD receiver at the ONU. Transmission this rate enables future 100G-EPON in cost effective way using 4×25.8-Gbps TWDM.
The dramatic growth of Internet traffic is leading to a concern about the future power consumption Internet. Energy sustainability communication networks becoming very important goal for reduction global carbon footprint. As optical access gain more popularity, their share in energy data network will increase. Developing energy-efficient technologies therefore crucial continuous scaling In this paper, we model different transceivers and demonstrate how various electronic photonic can help...
We propose a new method to align liquid crystals using microgrooves that are fabricated by stamping process. This rubless alignment has the advantage of accurate control pretilt angle and azimuthal surface anchoring energy means changing morphology. In this paper we discuss in detail.
This article discusses novel approaches to improve energy efficiency of different optical access technologies, including time division multiplexing passive network (TDM-PON), and wavelength PON (TWDM-PON), point-to-point (PTP) network, (WDM-PON), orthogonal frequency multiple (OFDMA-PON). These include cyclic sleep mode, energy-efficient bit interleaving protocol, power reduction at component level, or band selection. Depending on the target technology, one a combination can be applied.
In order to better understand liquid crystal alignment on a rubbed polymer surface, the authors investigated relationship between orientation of molecules and surface anchoring strength crystals surface. Measuring IR-absorption optical retardation, it was found that were oriented parallel rubbing direction. The molecular in both increased with strength.
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text D. van Veen, W. Pöhlmann, B. Farah, T. Pfeiffer, and P. Vetter, "Measurement Mitigation of Wavelength Drift due Self-Heating Tunable Burst-Mode DML for TWDM-PON," in Optical Fiber Communication Conference, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper W1D.6. Export BibTex Endnote (RIS) HTML Plain alert Save article
High splitting, optically amplified, passive optical networks (SuperPONs) are investigated in terms of redundancy provision and protection mechanisms. Options for redundancy, including the important special case dual homing, detailed, it is determined as to which these options (duplication feeder first distribution section, N+1 amplifiers amplified splitter) would be required provided all attached users facilitate appropriate availability basic telephony service. The distributed splitter...
Energy consumption of customer premises equipment (CPE) has become a serious issue in the new generations time-division multiplexing passive optical networks, which operate at 10 Gb/s or higher. It is becoming major factor global network energy consumption, and it poses problems during emergencies when CPE battery-operated. In this paper, low-energy (PON) that uses novel bit-interleaving downstream protocol proposed. The details about architecture, protocol, key enabling implementation...
A functional demonstration of bit-interleaving TDM downstream protocol for passive optical network (Bi-PON) is reported. The proposed presents a significant reduction in dynamic power consumption the customer premise equipment over conventional protocol. Experimental results show that more than 30x energy-saving processing achievable.
We present a full system implementation of TWSDM-PON based on low cost tunable laser in the ONU and featuring automated wavelength initialization tracking processes that are seamlessly added to existing XGPON1 activation protocol.
Thermally tunable burst-mode directly modulated lasers (DMLs) are the lowest-cost choices for optical network units in time and wavelength division multiplexed passive (TWDM-PON) systems. However, a fast drift caused by operation of this distributed feedback laser needs to be considered. The can result power penalties effectively reducing received also crosstalk when signal drifts into neighboring channels after passing through filter. In paper, we report measurements mitigation methods...
We investigate a symmetrical 40 Gbps PON using 10-Gbps class optical components. demonstrate transmission at Gbps, with 23-dB power budget and 4.6∙10-3 BER after 10-km SSMF discrete multitone IM-DD.
Abstract Thanks to their high energy density and thermal conductivity, metallic Phase Change Materials (mPCM) have shown great potential improve the performance of storage systems. However, commercial application mPCM is still limited due corrosion behavior with conventional container materials. This work first addresses on a fundamental level, whether carbon‐based composite‐ceramics are suitable for critical components in system. The compatibility between AlSi 12 Liquid Silicon Infiltration...
Battery-powered electric buses currently face the challenges of high cost and limited range, especially in winter conditions, where interior heating is required. To both challenges, use thermal energy storage based on metallic phase change materials for heating, also called high-performance storage, considered. By replacing battery capacity through such an system, which potentially lighter, smaller, cheaper than batteries used buses, overall reduction increase range conditions could be...
This paper presents a 10 Gb/s avalanche- photodiode-based DC-coupled reshaping and reamplifying (2R) burst-mode receiver with on-chip auto-reset generation multiple data rate support, designed for 10G-GPONs. A short 2R settling time of 75 ns (150 lower-rate operation), high sensitivity −31.3 dBm, large loud/soft ratio 25.3 dB are demonstrated at 2.5/5/10 in operation. Allowing multi-rate operation without external reset signals, it shows great potential use emerging symmetric 10G-GPON...
In this paper, we assess the energy efficiency of various optical access solutions including both telecom operator and end user side. We compare different next-generation passive networks (NG-PONs) to a baseline GPON deployment offering similar bandwidths Quality Service (QoS) for best-effort high speed connectivity services. For side, follow two approaches: first, consider fixed split ratio (1:64) in an existing distribution network (ODN); next, upgraded ODN with optimized specific...
We proposed and demonstrated a symmetrical 40-Gbps time division multiplexed passive optical network (TDM-PON) using low-cost 10-Gbps components in the unit, amplification at line terminal (OLT), digital signal processing (DSP), based on four-level pulsed amplitude (PAM-4) modulation downstream electrical duobinary (EDB) detection upstream. The use of combination with DSP allows us to increase serial bitrate beyond 10 Gbps for TDM-PON more cost-effective way. reduced signal-to-noise ratio...
We investigated the performance of symmetrical optical amplified 40 Gbps TDM-PON using only 10G class optics by means DSP. also applied DSP techniques to improve recovery burst mode upstream signal.
Around the world, municipalities have been making substantial investments into broadband access infrastructure to accelerate build-out of an urban phenomenon that has become known as a smart or connected city. At 2016 Optical Fiber Communications Conference, team contest, Connected OFCity Challenge, was held discuss technological innovations and examine dependencies intricacies city project. The participants, four teams experts coming from cross-section industry, presented defended their...