CARRIOCAS PROJECT: TOWARDS CONVERGED INTERNET INFRASTRUCTURES SUPPORTING HIGH PERFORMANCE DISTRIBUTED APPLICATIONS

  • Audouin O.
  • Verchere D.

The CARRIOCAS project studies and implements a high bit rate optical network capable of accommodating the requirements of data-intensive, high-performance distributed applications, in terms of bandwidth, quality of service guarantees, dynamic and automated service provisioning. The investigations are carried out under the constraints of supporting the applications on converged network ...

WIDE BANDWIDTH SILICON NITRIDE GRATING COUPLER

  • Buhl L.
  • Doerr C.
  • Long C

We demonstrate a one-dimensional grating coupler in silicon nitride with a 67-nm 1-dB bandwidth, the largest reported for a grating coupler butt-coupled to standard single-mode fiber. The peak coupling efficiency is -4.2dB. It requires no partial etch and requires only 0.6-?m fabrication resolution.

REAL-TIME IMPLEMENTATION OF DIGITAL SIGNAL PROCESSING FOR COHERENT OPTICAL DIGITAL COMMUNICATION SYSTEMS

  • Corteselli S.
  • Kaneda N.
  • Leven A.

Digital signal-processing-based coherent optical communication systems are widely viewed as the most promising next-generation long-haul transport systems. One of the biggest challenges in building these systems is the implementation of signal processors that are able to deal with signaling rates of a few tens of giga-samples per second. In this ...

INGAAS COMMUNICATION PHOTODIODES: FROM LOW- TO HIGH-POWER-LEVEL DESIGNS

  • Achouche M.
  • Caillaud C.
  • Carpentier D.
  • Chtioui M.
  • Glastre G.
  • Lahrichi M.

While InGaAs absorption material has been used for various applications up to 1.6-?m wavelength, specific designs for low-level detection have become of main interest using high responsivity and low-dark-current detectors. By adding an avalanche multiplication layer to form an avalanche photodiode (APD) using the Separated Absorption and Multiplication (SAM) structure, ...

INTRODUCTION TO THE ISSUE ON ENABLING TECHNOLOGIES FOR DIGITAL OPTICAL COMMUNICATION SYSTEMS

  • Caplan D.O
  • Kawanishi T.
  • Vlasob Y.A
  • Winzer P.

This issue aims at providing a diverse coverage of the current state of research in digital optical communication technologies, ranging all the way from deep-space laser communications to terrestrial fiber-optic transport, packet, and access networks to digital optical communications for computer interconnects and on-chip integration.

240-GHZ GAIN-BANDWIDTH PRODUCT BACK-SIDE ILLUMINATED ALINAS AVALANCHE PHOTODIODES

  • Achouche M.
  • Carpentier D.
  • Decobert J.
  • Derouin E.
  • Glastre G.
  • Lagay N.
  • Lahrichi M.

We demonstrate an AlInAs-InGaAs separate absorption, grading, and multiplication avalanche photodiode (APD) with a very thin avalanche layer operating at 1550 nm for 10-Gb/s optical transmission achieving simultaneously high responsivity (0.9 A/W at M = 1), very low excess noise factor (F(M=10) = 3), and very high gain-bandwidth product of ...

ETHERNET LABEL SPACES DEPENDENCY ON NETWORK TOPOLOGY

  • Papadimitriou D.

Label space consumption has been studied in label-based forwarding architectures such as multi-protocol label switching (MPLS) to reduce forwarding table sizes and lookup complexity, to simplify network management, and to limit operational expenditures. On the other hand, nowadays label-based forwarding is also considered in the context of carrier class Ethernet ...

FLIP-CHIP ASSEMBLY DESIGN OF AN ELECTRO-ABSORPTION MODULATED LASER BASED ON EM/CIRCUIT COMODELING

  • Blache F.
  • Jany C.
  • Kazmierski C.
  • Scavennec A.

We designed two kinds of flip-chip bonded electro-absorption modulated laser on AlN or Si carrier, working at 100 Gb s?1. A theoretical comodeling approach based on 3D electromagnetic and circuit simulations has been applied and validated by measurements. As demonstrated, integration and behavior of future complex opto-electronic modules could be ...

ANALYSIS OF EVAPORATING MIST FLOW FOR ENHANCED CONVECTIVE HEAT TRANSFER

  • Kolodner P.
  • Salamon T.

Enhancement of forced convective heat transport through the use of evaporating mist flow is investigated analytically and by numerical simulation. A two-phase mist, consisting of finely dispersed water droplets in an airstream, is introduced at the inlet of a longitudinally-finned heat sink. The latent heat absorbed by the evaporating droplets ...

A NOVEL FREQUENCY PLANNING ALGORITHM FOR MITIGATING UNFAIRNESS IN WIRELESS LANS

  • Bejerano Y.
  • Smith M.

A typical objective of frequency planning in wireless networks is maximizing the overall network throughput by reducing inter-cell interference. We argue that network throughput alone, as obtained by simulations or direct measurement, is not an adequate measure for evaluating a frequency plan, so that any direct optimization of network throughput ...

INTRINSIC PHOTOINDUCED ANOMALOUS HALL EFFECT

  • Pfeiffer L.
  • West K.

We have measured the intrinsic photoinduced anomalous Hall effect (PI-AHE) in very high mobility two-dimensional hole gases. In this new effect, similarly to both the spin and anomalous Hall effects, carriers with different spins are deflected to opposite sides of the sample by the spin–orbit interaction, thereby producing in this ...

ENABLING DECENTRALISED MANAGEMENT THROUGH FEDERATION

  • Boran A.

Cross-domain management is an increasingly important concern in network management and such management capability is a key-enabler of many emerging computing environments. This paper analyses the requirements for management systems that aim to support flexible and general capability sharing between autonomously managed domains. It introduces a novel Layered Federation Model ...

THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF THE TEMPERATURE DEPENDENT CONTINUOUS WAVE LASING CHARACTERISTICS AND THE SWITCH-ON DYNAMICS OF AN INAS/INGAAS QUANTUM-DOT SEMICONDUCTOR LASER

  • Krakowski M.

We investigate spectrally resolved continuous wave (CW) and spectrally and time-resolved switch-on emission properties of an InAs/InGaAs quantum-dot laser. The temperature and injection current dependence of the excited-state and ground-state emission dynamics is studied in the range between 20 °C and 50 °C under CW and gain-switching operation. All the ...

OPTIMAL SERVER SCHEDULING IN HYBRID P2P NETWORKS

  • Borst S.

We consider the server scheduling problem in hybrid P2P networks in the context of a fluid model. Specifically, we examine how to allocate the limited amount of server upload capacity among competing swarms over time in order to optimize the download performance experienced by users. For sufficiently high user churn ...

OPTIMAL TRUNK RESERVATION FOR AN OVERLOADED LINK

  • Morrison J.

We consider a single overloaded link with a large number of circuits which is offered two kinds of calls. The traffic intensity of the primary calls is assumed to be strictly less than 1, and R of the circuits are reserved for these. Rewards are generated when calls are accepted, ...

INSENSITIVITY AND STABILITY OF RANDOM-ACCESS NETWORKS

  • Borst S.

Random-access algorithms such as the Carrier-Sense Multiple-Access (CSMA) protocol provide a popular mechanism for distributed medium access control in large-scale wireless networks. In recent years, fairly tractable models have been shown to yield remarkably accurate throughput estimates for CSMA networks. These models typically assume that both the transmission durations and ...

WAVELENGTH INTENSITY MULTIPLEXING FOR SEAMLESS UPGRADE OF PON DOWNSTREAM TO 10 GBIT/S

  • Deppisch B.
  • Jentsch L.
  • Krimmel H.
  • Pfeiffer T.
  • Poehlmann W.

A new technique is presented for seamlessly upgrading an existing passive optical network (PON) to a higher bitrate on a different wavelength without the need to retrofit any of the existing legacy ONUs. On the OLT side, the standard compliant legacy and advanced signals are combined by an additional box, ...

MULTIPLE-INPUT MULTIPLE-OUTPUT GAUSSIAN BROADCAST CHANNELS WITH CONFIDENTIAL MESSAGES

  • Liu R.
  • Liu T.
  • Poor H.
  • Shamai S.

This paper considers the problem of secret communication over a two-receiver multiple-input multiple-output (MIMO) Gaussian broadcast channel. The transmitter has two independent messages, each of which is intended for one of the receivers but needs to be kept asymptotically perfectly secret from the other. It is shown that, surprisingly, under ...

PERFORMANCE OF MULTICARRIER CDMA IN THE PRESENCE OF CORRELATED FADING

  • Daut D.
  • Sorooshyari S.

Incorporating a framework from multivariate statistical theory, analytical results for the performance of the downlink and uplink of multicarrier code-division multiple access (MC-CDMA) in the presence of correlated Rayleigh fading are presented. Bit-error-probability expressions are derived for MC-CDMA diversity combining schemes, while statistical generality is maintained by assuming no specific ...

PERFORMANCE OF CACHING ALGORITHMS FOR IPTV ON-DEMAND SERVICES

  • De Vleeschauwer D.
  • Laevens K.

Due to its native return channel and its ability to easily address each user individually an IPTV system is very well suited to offer on-demand services. Those services are becoming more popular as there is an undeniable trend that users want to watch the offered content when and where it ...