Search results for: Nicola Calabretta

Items from 1 to 20 out of 66 results

article

A Sub‐Picojoule per Bit Integrated Magneto‐Optic Modulator on Silicon: Modeling and Experimental Demonstration

Marijn P. G. Rombouts, Fotini Karinou, Paolo Pintus, Duanni Huang, more

Laser & Photonics Reviews > 17 > 4 > n/a - n/a

Integrated magneto‐optic (MO) modulators are an attractive but not fully explored alternative to electro‐optic (EO) modulators. They are current driven, structurally simple, and could potentially achieve high efficiency in cryogenic and room temperature environments where fJ bit⁻¹ optical interfaces are needed. In this paper, the performance and energy efficiency of a novel MO modulator at room temperature...

chapter

Combining optics and SDN to enable true hybrid integration of electronic and photonic switching solutions

Gonzalo Guelbenzu, Wang Miao, Yaniv Ben-Itzhak, Cosmin Caba, more

2017 IEEE Photonics Society Summer Topical Meeting Series (SUM) > 139 - 140

2017 IEEE Photonics Society Summer Topical Meeting Series (SUM)

We present two hybrid fabrics integrating optical and electronic switches with SDN, and a novel approach improving the scaling of fast optical switches. C-Share reroute flows through optical switches increasing network performance. E-WDM exploits the optical switch transparency by emulating wavelength switching in electronic switches.

chapter

OPSquare: Towards petabit/s optical data center networks based on WDM cross-connect switches with flow control

Nicola Calabretta, Fulong Yan, Wang Miao

2017 19th International Conference on Transparent Optical Networks (ICTON) > 1 - 4

2017 19th International Conference on Transparent Optical Networks (ICTON)

Scaling the capacity while maintaining low latency and power consumption is a challenge for hierarchical data center networks (DCNs) based on electrical switches. In this work we present a novel optical DCN architecture called OPSquare that potentially addresses the scaling issues by employing parallel intra- and inter-cluster switching networks based on distributed fast WDM optical cross-connect...

chapter

Monolithically integrated WDM cross-connect switch for high-performance optical data center networks

Nicola Calabretta, Wang Miao, Ketemaw Mekonnen, Kristif Prifti, more

2017 Optical Fiber Communications Conference and Exhibition (OFC) > 1 - 3

2017 Optical Fiber Communications Conference and Exhibition (OFC)

The switching performance of a photonic integrated WDM cross-connect switch is assessed with 40Gb/s NRZ-OOK, 20Gb/s PAM4 and data-rate adaptive DMT traffic. Results show limited penalty for single/WDM channels and > 10dB power dynamic range.

article

Opsquare: A flat DCN architecture based on flow-controlled optical packet switches

Fulong Yan, Wang Miao, Oded Raz, Nicola Calabretta

IEEE/OSA Journal of Optical Communications and Networking > 2017 > 9 > 4 > 291 - 303

Aiming at solving the scaling issues of bandwidth and latency in current hierarchical data center network (DCN) architectures, we propose and investigate a novel optical flat DCN architecture in which the number of interconnected ToRs scales as the square of the optical packet switches’ (OPS) port count (OPSquare). The proposed flat DCN architecture consists of two parallel interand intra-cluster...

article

Assessment of Scalable and Fast 1310-nm Optical Switch for High-Capacity Data Center Networks

Wang Miao, Huug de Waardt, Robbert van der Linden, Nicola Calabretta

IEEE Photonics Technology Letters > 2017 > 29 > 1 > 98 - 101

The development of high-capacity 1310-nm optical interconnects and the limitation of the electrical switches have necessitated the investigation of 1310-nm optical switches for flat data center networks. We have performed an experimental assessment of the scalable and fast 1310-nm optical switching system with three types of traffic, namely, the waveband

$4\times 25$

Gb/s on–off keying (OOK), 28...

article

Monolithically Integrated Wavelength Converter for Intra-Data Center Routing Applications

Fulong Yan, Wang Miao, Teng Li, Yoshinobu Maeda, more

IEEE Photonics Technology Letters > 2016 > 28 > 24 > 2854 - 2857

A wideband wavelength converter based on cross gain modulation has been demonstrated by using a monolithically integrated semiconductor optical amplifier and 12-channel distributed feedback lasers. Error-free operation unicast wavelength conversion of 10-Gb/s non-return-to-zero ON–OFF keying data payload has been demonstrated with 3-dB power penalty and around 0.5 dB extra penalty for transmission...

chapter

1310nm high-capacity waveband switch node for flat optical data center networks

Wang Miao, Huug de Waardt, Nicola Calabretta

2016 21st OptoElectronics and Communications Conference (OECC) held jointly with 2016 International Conference on Photonics in Switching (PS) > 1 - 3

2016 21st OptoElectronics and Communications Conference (OECC) / 2016 International Conference on Photonics in Switching (PS)

Waveband switching capability of 1310nm SOA-based scalable and flow-controlled optical switching node is assessed. Experimental results show nanoseconds operation of 64-port switch node at 100 Gb/s WDM (4×25Gb/s) with >14dB dynamic range and <1.8dB penalty.

chapter

High performance DCN architecture based on flow-controlled optical switching system

Nicola Calabretta, Wang Miao, Fulong Yan, Oded Raz

2016 21st OptoElectronics and Communications Conference (OECC) held jointly with 2016 International Conference on Photonics in Switching (PS) > 1 - 3

2016 21st OptoElectronics and Communications Conference (OECC) / 2016 International Conference on Photonics in Switching (PS)

We present a novel high performance flat DCN employing bufferless and distributed sub-microsecond optical switches with wavelength, space, and time switching operation. Numerical and experimental investigations indicate potential scalability of the DCN to Petabit/s capacity.

article

Towards Petabit/s All-Optical Flat Data Center Networks Based on WDM Optical Cross-Connect Switches with Flow Control

Wang Miao, Fulong Yan, Nicola Calabretta

Journal of Lightwave Technology > 2016 > 34 > 17 > 4066 - 4075

Scaling the capacity while maintaining low latency and power consumption is a challenge for hierarchical data center networks (DCNs) based on electrical switches. In this work we present a novel all-optical flat DCN architecture OPSquare that potentially addresses the scaling issues by employing parallel intra-/inter-cluster switching networks, distributed fast WDM optical cross-connect (OXC) switches,...

chapter

Optical solutions for the challenges of mega-size data center networks

Oded Raz, Gonzalo Guelbenzu, Teng Li, Chenhui Li, more

2016 Optical Fiber Communications Conference and Exhibition (OFC) > 1 - 3

2016 Optical Fiber Communications Conference and Exhibition (OFC)

As data-centers and the volume of traffic inside them keeps growing, innovative solutions are needed for further scaling. In this paper we review recent advancement in optical switches, components and architectures to meet these challenges.

chapter

OPSquare: Assessment of a novel flat optical data center network architecture under realistic data center traffic

Wang Miao, Fulong Yan, Oded Raz, Nicola Calabretta

2016 Optical Fiber Communications Conference and Exhibition (OFC) > 1 - 3

2016 Optical Fiber Communications Conference and Exhibition (OFC)

The performances of OPSquare flat data-center network based on flow-controlled optical switches are investigated. Results show <1E-6 packet loss and <2μs end-to-end latency for 0.3 load when scaling to 40960 servers with 32×32 optical switches.

chapter

Optical label switching based add-drop multiplexer for low latency and high performance metro networks

Wang Miao, Huug de Waardt, Nicola Calabretta

2016 Optical Fiber Communications Conference and Exhibition (OFC) > 1 - 3

2016 Optical Fiber Communications Conference and Exhibition (OFC)

We propose a novel optical label switching OADM prototype with nanoseconds reconfiguration and power-equalization time. System demonstration shows dynamic add/drop operation with <110μs (40km-ring) average delivery time, 1E-6 packet-loss for 0.4 load and 16-packet buffer.

chapter

Error-free all-optical wavelength multicasting at 40 Gb/s on a compact InP-based chip

Xiu Zheng, Oded Raz, Nicola Calabretta, Rongguo Lu, more

2016 Optical Fiber Communications Conference and Exhibition (OFC) > 1 - 3

2016 Optical Fiber Communications Conference and Exhibition (OFC)

40-Gb/s all-optical wavelength multicasting is demonstrated employing a compact InP-based chip consisting of semiconductor optical amplifiers, an arrayed-waveguide grating and delay interferometers. 2.5dB and 3.2dB power penalties for NRZ and RZ signals were achieved, respectively.

chapter

High optical label switching add-drop multiplexer nodes with nanoseconds latency for 5G metro/access networks

Nicola Calabretta, Wang Miao, Huug de Waardt

2016 18th International Conference on Transparent Optical Networks (ICTON) > 1 - 4

2016 18th International Conference on Transparent Optical Networks (ICTON)

We present a novel optical add-drop multiplexer for next-generation metro/access networks by exploiting optical label switching technology. Experimental results of a ring network show nanoseconds add/drop operation including multicasting and power equalization of 50Gb/s data.

chapter

Nanoseconds wavelength and space optical cross-connect switches for high performance optical networks

Nicola Calabretta, Wang Miao, Kevin Williams

2016 18th International Conference on Transparent Optical Networks (ICTON) > 1 - 4

2016 18th International Conference on Transparent Optical Networks (ICTON)

We present a nanoseconds optical cross-connect switch with wavelength, space, and time switching operation for high performance optical metro/access networks and data center networks. The fast optical switches can enhance the performance of optical networks by providing large-capacity switching capability and efficiently sharing the data plane resources by exploiting statistical multiplexing. Results...

article

Optical Label Switching Add-Drop Multiplexer for High-Performance Metro Networks

Wang Miao, Huug de Waardt, Nicola Calabretta

IEEE Photonics Technology Letters > 2016 > 28 > 10 > 1065 - 1068

We demonstrate a novel fast optical add-drop multiplexer (OADM) for high-capacity and low-latency next-generation metro network by exploiting optical label switching technology. The parallel optical label processing technique allows nanoseconds OADM reconfiguration time for efficient statistical multiplexing of the data packets, and facilitates per channel power monitoring for implementing nanoseconds...

article

Novel Flat Data Center Network Architecture Based on Optical Switches With Fast Flow Control

Fulong Yan, Wang Miao, Harm Dorren, Nicola Calabretta

IEEE Photonics Journal > 2016 > 8 > 2 > 1 - 10

We propose a novel flat and scalable data center network (DCN) architecture based on fast (nanosecond) distributed buffer-less optical switches and efficient optical flow control. The proposed DCN architecture scales as the square of the port count of the optical switches. In order to investigate the performance of the proposed architecture, the system operation of an electronic Top-of-the-Rack (ToR)...

article

Lightness: A Function-Virtualizable Software Defined Data Center Network With All-Optical Circuit/Packet Switching

George M. Saridis, Shuping Peng, Yan Yan, Alejandro Aguado, more

Journal of Lightwave Technology > 2016 > 34 > 7 > 1618 - 1627

Modern high-performance data centers are responsible for delivering a huge variety of cloud applications to the end-users, which are increasingly pushing the limits of the currently deployed computing and network infrastructure. All-optical dynamic data center network (DCN) architectures are strong candidates to overcome those adversities, especially when they are combined with an intelligent software...

chapter

On the cost, latency, and bandwidth of LIGHTNESS data center network architecture

Fulong Yan, Wang Miao, Harm Dorren, Nicola Calabretta

2015 International Conference on Photonics in Switching (PS) > 130 - 132

2015 International Conference on Photonics in Switching (PS)

We investigate and compare the cost, bandwidth, and latency of the LIGHTNESS data center network (DCN) architecture adopting optical switching technologies with current DCN architectures based on electrical switching technologies. The studies include the cost and latency models of all the required opto-electronics (electronic switches, transceivers, cables) and optical (circuit and packet switches)...

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OPTICAL PACKET SWITCHING (36)
OPTICAL SWITCHES (32)
OPTICAL BUFFERING (17)
OPTICAL FIBERS (14)
DATA CENTER NETWORK (12)
LABEL PROCESSOR (11)
OPTICAL FILTERS (11)
OPTICAL SWITCH (11)
WAVELENGTH DIVISION MULTIPLEXING (11)
ADAPTIVE OPTICS (10)
INTEGRATED OPTICS (10)
SEMICONDUCTOR OPTICAL AMPLIFIERS (10)
IN-BAND LABELS (9)
OPTICAL SIGNAL PROCESSING (9)
OPTICAL TRANSMITTERS (9)
OPTICAL WAVELENGTH CONVERSION (9)
CLOCKS (6)
SERVERS (6)
HIGH PERFORMANCE COMPUTERS (5)
OPTICAL PULSES (5)
OPTICAL RECEIVERS (5)
PAYLOADS (5)
NONLINEAR OPTICS (4)
OPTICAL INTERCONNECTIONS (4)
SYNCHRONIZATION (4)
ALL-OPTICAL CLOCK RECOVERY (3)
BIT ERROR RATE (3)
DIODE LASERS (3)
HIGH SPEED OPTICAL TECHNIQUES (3)
HIGH-SPEED OPTICAL TECHNIQUES (3)
OPTICAL AMPLIFIERS (3)
OPTICAL CHARACTER RECOGNITION SOFTWARE (3)
OPTICAL FEEDBACK (3)
OPTICAL PACKET SWITCH (3)
OPTICAL PACKET SWITCHING (OPS) (3)
PACKET SWITCHING (3)
RADIO FREQUENCY (3)
TIMING JITTER (3)
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BANDWIDTH (2)
BIT RATE 160 GBIT/S (2)
BRAGG GRATINGS (2)
COMPUTER ARCHITECTURE (2)
DATA CENTER ARCHITECTURES (2)
DEMULTIPLEXING (2)
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INDIUM PHOSPHIDE (2)
INP (2)
LASER MODE LOCKING (2)
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OPTICAL DEVICE FABRICATION (2)
OPTICAL FIBER NETWORKS (2)
OPTICAL FLOW CONTROL (2)
OPTICAL INTERCONNECTS (2)
OPTICAL LABEL PROCESSOR (2)
OPTICAL LOSSES (2)
OPTICAL MIXING (2)
OPTICAL RING RESONATORS (2)
OPTICAL SWITCHING TECHNOLOGIES (2)
OPTICAL WAVEGUIDES (2)
PACKET LOSS (2)
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PROBES (2)
QUANTUM DASH (2)
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INFONA - science communication portal

Search results for: Nicola Calabretta

A Sub‐Picojoule per Bit Integrated Magneto‐Optic Modulator on Silicon: Modeling and Experimental Demonstration

Combining optics and SDN to enable true hybrid integration of electronic and photonic switching solutions

OPSquare: Towards petabit/s optical data center networks based on WDM cross-connect switches with flow control

Monolithically integrated WDM cross-connect switch for high-performance optical data center networks

Opsquare: A flat DCN architecture based on flow-controlled optical packet switches

Assessment of Scalable and Fast 1310-nm Optical Switch for High-Capacity Data Center Networks

Monolithically Integrated Wavelength Converter for Intra-Data Center Routing Applications

1310nm high-capacity waveband switch node for flat optical data center networks

High performance DCN architecture based on flow-controlled optical switching system

Towards Petabit/s All-Optical Flat Data Center Networks Based on WDM Optical Cross-Connect Switches with Flow Control

Optical solutions for the challenges of mega-size data center networks

OPSquare: Assessment of a novel flat optical data center network architecture under realistic data center traffic

Optical label switching based add-drop multiplexer for low latency and high performance metro networks

Error-free all-optical wavelength multicasting at 40 Gb/s on a compact InP-based chip

High optical label switching add-drop multiplexer nodes with nanoseconds latency for 5G metro/access networks

Nanoseconds wavelength and space optical cross-connect switches for high performance optical networks

Optical Label Switching Add-Drop Multiplexer for High-Performance Metro Networks

Novel Flat Data Center Network Architecture Based on Optical Switches With Fast Flow Control

Lightness: A Function-Virtualizable Software Defined Data Center Network With All-Optical Circuit/Packet Switching

On the cost, latency, and bandwidth of LIGHTNESS data center network architecture

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