H.J.S. Dorren

Technische Universiteit Eindhoven, Eindhoven, North Brabant, Netherlands

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Publications (335)302.46 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Optical packet switching (OPS) can enhance the performance of data center networks (DCNs)by providing fast and large-capacity switching capability. Benefiting from the software-defined networking (SDN) control plane, which could update the look-up-table (LUT) of the OPS, virtual DCNs can be flexibly created and reconfigured. In this work, we have implemented and assessed an SDN-based control framework for an OPS node, where the OpenFlow protocol has been extended in support of the OPS switching paradigm. Application flows are switched by the OPS at submicrosecond hardware speed, decoupled from the slower (millisecond timescale) SDN control operation. By the DCN infrastructure provider, the virtual networks become directly programmable with the abstraction of the underlying OPS node. Experimental results validate the successful setup of virtual network slices for intra-data center interconnect and quality of service (QoS) guarantee for high-priority application flows. Data plane resources are efficiently shared by exploiting statistical multiplexing. In addition, the capability of exposing per-port OPS traffic statistics information to the SDN controller enables the implementation and experimental validation of load balancing algorithms to improve the QoS performance.
    Journal of Optical Communications and Networking 07/2015; 7(7):634-643. DOI:10.1364/JOCN.7.000634 · 2.06 Impact Factor
  • R Stabile · N Calabretta · K A Williams · H J S Dorren
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    ABSTRACT: An InP monolithically integrated wavelength selector based on combinations of integrated AWGs and SOAs selects one out of up to 16 input channels. Loss-compensated, error-free WDM channel selection operation with <2.3 dB penalties is reported, with an OSNR of up to 32.5 dB/0.1 nm.
    Optics Letters 04/2015; 40(8):1795-1797. DOI:10.1364/OL.40.001795 · 3.29 Impact Factor
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    ABSTRACT: We discuss challenges for optically enabled high-radix switches in data centers. We highlight the clear advantages of using high-radix switches and explain why coupling such switches with midboard optics can be a winning solution. We further analyze the trends in pluggable transceivers and data center switches and indicate that if current scaling trends are set to continue, very different hardware, software, and architectures should be adopted to support future data centers networks.
    Journal of Lightwave Technology 03/2015; 33(5):1117-1125. DOI:10.1109/JLT.2015.2391301 · 2.97 Impact Factor
  • O. Raz · P. Duan · H. J. S. Dorren
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    ABSTRACT: With the exponential growth of data centers, in terms of number of hosts and capacity, the required components for building data center networks are stretched to their limits. In this talk we will discuss a new technology developed for interconnecting electronic and opto-electronic ICs in order to revolutionize the way parallel optics are fabricated and packaged so that demands in terms of cost, power, density and performance can be met well into the 3rd decade of the 21st century.
    2014 16th International Conference on Transparent Optical Networks (ICTON); 07/2014
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    ABSTRACT: We propose and demonstrate an optical flat data center network based on scalable optical switch system with optical flow control. Experimental evaluation of the system at data rate of 40 Gb/s includes a 4×4 optical switch with highly distributed control for port-count independent nanosecond reconfiguration time for low latency operation. The hardware flow control at the optical level allows fast retransmission control of the electrical buffered packets at the edge nodes preventing the need of optical buffers. Moreover, this makes a dedicated flow control network redundant, which effectively reduces system complexity and power consumption. Dynamic switch operation reported 300 ns minimum end-to-end latency (including 25 m transmission link) and <; 10-6 packet loss for 0.4 load with buffer size of 16 packets.
    2014 16th International Conference on Transparent Optical Networks (ICTON); 07/2014
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    ABSTRACT: Current over-provisioned and multi-tier data centre networks (DCN) deploy rigid control and management platforms, which are not able to accommodate the ever-growing workload driven by the increasing demand of high-performance data centre (DC) and cloud applications. In response to this, the EC FP7 project LIGHTNESS (Low Latency and High Throughput Dynamic Network Infrastructures for High Performance Datacentre Interconnects) is proposing a new flattened optical DCN architecture capable of providing dynamic, programmable, and highly available DCN connectivity services while meeting the requirements of new and emerging DC and cloud applications. LIGHTNESS DCN comprises all-optical switching technologies (Optical Packet Switching (OPS) and Optical Circuit Switching (OCS)) and hybrid Top-of-the-Rack (ToR) switches, controlled and operated by a Software Defined Networking (SDN) based control plane for enhanced programmability of heterogeneous network functions and protocols. Harnessing the power of optics enables DCs to effectively cope with the high-performance applications' demands. The programmability and flexibility provided by the SDN based control plane allow to fully exploit the benefits of the LIGHTNESS multi-technology optical DCN, while provisioning on-demand, dynamic, flexible and highly resilient network services inside DCs.
    2014 European Conference on Networks and Communications (EuCNC); 06/2014
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    ABSTRACT: Photonic integration of optical packet switching modules is crucial to compete with existing electronic switching fabrics in large data center networks. The approach of coding the forwarding packet information in an in-band label enables a spectral-efficient and scalable way of building low-latency large port count modular optical packet switching architecture. We demonstrate the error-free operation of the four in-band label extraction from $hbox{160 Gb/s}$ optical data packets based on photonic integrated silicon-on-insulator ring resonators. Four low-loss cascaded ring resonators using the quasi-TM mode are used as narrowband filters to ensure the detection of four optical labels as well as the error-free forwarding of the payload at limited power penalty. Due to the low-loss and less-confined optical quasi-TM mode the resonators can be very narrowband and have low insertion loss. The effect of the bandwidth of the four ring resonators on the quality of the payload is investigated. We show that using four rings with 3dB bandwidth of $hbox{21 pm}$ and only an insertion loss of $hbox{3 dB}$ , the distortion on the payload is limited (${<}1.5,{rm dB}$ power penalty), even when the resonances are placed very close to the packet’s central wavelength. We also investigate the optical power requirements for error-free detection of the label as function of their spectral position relative to the center of the payload. The successful in-band positioning of the labels makes this component very scalable in amount of labels.
    Journal of Lightwave Technology 05/2014; 32(9):1647-1653. DOI:10.1109/JLT.2014.2307576 · 2.97 Impact Factor
  • Martijn Tassaert · Gunther Roelkens · Harm J. S. Dorren · Oded Raz
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    ABSTRACT: In this paper we demonstrate an optically controlled 1 $\times$ 4 remote node switch, based on membrane InP switches bonded to a silicon-on-insulator circuit. We show that the switch exhibits cross talk better than 25 dB between the output ports, and that the switch operates without receiver sensitivity penalty. Furthermore, the proposed switch architecture allows for optical clock distribution as a means to avoid the need for clock recovery at the receiver side. This is demonstrated in a proof-of-principle experiment where data and clock are sent through a single membrane InP switch.
    Journal of Lightwave Technology 02/2014; 32(4). DOI:10.1109/JLT.2013.2273119 · 2.97 Impact Factor
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    ABSTRACT: We propose and demonstrate an optical flat datacenter network based on scalable optical switch system with optical flow control. Modular structure with distributed control results in port-count independent optical switch reconfiguration time. RF tone in-band labeling technique allowing parallel processing of the label bits ensures the low latency operation regardless of the switch port-count. Hardware flow control is conducted at optical level by re-using the label wavelength without occupying extra bandwidth, space, and network resources which further improves the performance of latency within a simple structure. Dynamic switching including multicasting operation is validated for a 4x4 system. Error free operation of 40 Gb/s data packets has been achieved with only 1 dB penalty. The system could handle an input load up to 0.5 providing a packet loss lower that 10<sup>-5</sup> and an average latency less that 500ns when a buffer size of 16 packets is employed. Investigation on scalability also indicates that the proposed system could potentially scale up to large port count with limited power penalty.
    Optics Express 02/2014; 22(3):2465-72. DOI:10.1364/OE.22.002465 · 3.49 Impact Factor
  • Source
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    ABSTRACT: We experimentally demonstrate a highly spectral efficient optical flow control technique for intra data center networks. A bi-directional system is implemented for generating flow control signal by reusing label wavelength and the transmission link within the same WDM channel. Dynamic operation shows high-quality flow control signal with 265ns latency including 220ns propagation delay and 500mV amplitude with low input power and low bias current. Error free operation with 0.5dB penalty for 40Gb/s payload indicates that no distortion has been caused due the transmission of label and flow control signal.
    Optics Express 01/2014; 22(1):427-34. DOI:10.1049/cp.2013.1498 · 3.49 Impact Factor
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    ABSTRACT: We review a flat datacenter network (DCN) based on scalable optical switching system with port-count independent low latency. Virtual DCN reconfiguration by utilizing statistical multiplexing offered by the optical switches is demonstrated.
    Photonics in Switching; 01/2014
  • Pinxiang Duan · Oded Raz · Barry Smalbrugge · H.J.S. Dorren
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    ABSTRACT: Optical interconnects can offer small footprint, high bandwidth density and high data rates compared with electrical wires. In this paper, we demonstrate how we use lithographic processes to stack and interconnect opto-electronic ICs on top of their electronic counter-parts with metallic interconnects spanning more than 200 μm height difference. This process is demonstrated for a partial wafer including first demonstration of using the same process for the creation of micro lenses on top of optical emitters. We further report on testing of the fabricated 3-D stacked transmitter and receiver ICs and show open eye-patterns for transmitter and receiver ICs as well as high uniformity and no sensitivity penalty for the transmitter ICs when compared to a commercial device. Finally we use thermal simulation to show that with proper heat sinking of the CMOS IC the opto-electronic ICs will operate at a reasonable 40°C which is well within their operation margin.
    Journal of Lightwave Technology 12/2013; 31(24):4073-4079. DOI:10.1109/JLT.2013.2285304 · 2.97 Impact Factor
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    ABSTRACT: We report, to the best of our knowledge, the first demonstration of 320 Gb/s all-optical clock recovery and all-optical time de-multiplexing after 51 km transmission by exploiting single-quantum dash mode-locked laser diode (QD-MLLD). Based on injection locking of the QD-MLLD, the 40 GHz synchronized optical clock pulses were recovered from the 320 Gb/s with a pulse width of 1.9 ps and timing jitter of 135 fs, which allowed directly time de-multiplexing of 320-40 Gb/s without additional complex optoelectronic circuitry. The 320-40 Gb/s all-optical de-multiplexing was achieved with averaging a power penalty of 4.5 dB at BER of 1E-6.
    Optics Letters 11/2013; 38(22):4805-8. DOI:10.1364/OL.38.004805 · 3.29 Impact Factor
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    ABSTRACT: We report a 40 Gb/s burst mode optical clock recovery (BM-OCR) by injection locking a dynamically switched quantum dash mode-locked laser diode. We investigated in detail the performance of the BM-OCR operation after 52 km transmission. High quality BM-OCR after transmission is achieved with a locking time of similar to 25 ns, and 40 GHz recovered packet clock with 46 dB signal to noise floor suppression and 64 fs timing jitter (100 Hz to 1 MHz). The reported BM-OCR has a continuous tuning wavelength range from 1535 to 1560 nm, power dynamic range of no less than 6.7 dB. The frequency deviation tolerance of the BM-OCR is within -427 to +226 ppm at 39.813 Gb/s (OC-768 standard line rate), which is compliant with the specifications in the IEEE 40/100-Gb/s Ethernet standard. These results indicate the promising future applications of the proposed BM-OCR in high speed burst mode optical receiver.
    IEEE Photonics Technology Letters 11/2013; 25(22):2221-2224. DOI:10.1109/LPT.2013.2284529 · 2.11 Impact Factor
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    ABSTRACT: Applications running inside data centers are enabled through the cooperation of thousands of servers arranged in racks and interconnected together through the data center network. Current DCN architectures based on electronic devices are neither scalable to face the massive growth of DCs, nor flexible enough to efficiently and cost-effectively support highly dynamic application traffic profiles. The FP7 European Project LIGHTNESS foresees extending the capabilities of today's electrical DCNs throPugh the introduction of optical packet switching and optical circuit switching paradigms, realizing together an advanced and highly scalable DCN architecture for ultra-high-bandwidth and low-latency server-to-server interconnection. This article reviews the current DC and high-performance computing (HPC) outlooks, followed by an analysis of the main requirements for future DCs and HPC platforms. As the key contribution of the article, the LIGHTNESS DCN solution is presented, deeply elaborating on the envisioned DCN data plane technologies, as well as on the unified SDN-enabled control plane architectural solution that will empower OPS and OCS transmission technologies with superior flexibility, manageability, and customizability.
    IEEE Network 11/2013; 27(6):14-22. DOI:10.1109/MNET.2013.6678922 · 2.54 Impact Factor
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    ABSTRACT: In this study, we provide an experimental assessment of a quantum dash Fabry-Pérot mode-locked laser for all-optical clock recovery using data streams at 40, 80, 160, and 320 Gb/s. The data streams at 80, 160, and 320 Gb/s are phase coherent signals featuring no spectral component at 40 GHz. The 40 GHz recovered optical clock signal is characterized in terms of phase noise, timing jitter, dynamic power range, and wavelength dependence for the different data rates. Our experiments demonstrate a recovered optical clock signal from a 320 Gb/s data stream with a timing jitter of 94 fs and wavelength detuned by 23 nm. In addition, the performance of the optical time division multiplexing receiver at 80 and 160 Gb/s data signals employing the recovered clock as a demultiplexing control signal and as a clock for the bit-error-rate tester (BERT) is evaluated by bit error rate measurements on the demultiplexed data signals.
    Journal of Lightwave Technology 10/2013; 31(19):3127-3134. DOI:10.1109/JLT.2013.2278724 · 2.97 Impact Factor
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    ABSTRACT: In this paper, different approaches to implement all-optical flip-flops, working with a synchronization signal, will be presented and compared. In this type of optical bistable devices, the information present at the inputs produces effects on the outputs, throughout all the clock pulse period. The performance of optical clocked flip-flops will be studied in terms of extinction ratio (ER), switching energies and switching times.
    Optik - International Journal for Light and Electron Optics 08/2013; 124(16):2327–2333. DOI:10.1016/j.ijleo.2012.06.107 · 0.68 Impact Factor
  • K. Solis-Trapala · H.J.S. Dorren
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    ABSTRACT: We investigate the dynamic and static gain characteristics of quantum-dot semiconductor optical amplifiers (QD-SOAs) operating at 1.55μm based upon the experimental measurements performed on an InAs/InGaAsP/InP QD-SOA and simple modeling tools. A two-level rate equation model proved to be sufficient to explain the experimental gain dynamics as a function of current. The simple model allowed the derivation of the saturation power of QD-SOAs in the static regime. We show that the saturation power of QD-SOAs, in contrast to bulk and quantum well amplifiers, is enhanced by a factor of roughly two that depends on the material and device parameters. Our modeling tools are based on the experimentally obtained quantities and facilitates the analysis of different devices' designs and the identification of the parameters that play a key role in the fast QD-SOA gain recovery and its high saturation output power, namely, a fast capture time of carriers into the dot and a large energy difference between wetting layer and quantum dot states.
    Optics Communications 07/2013; s 298–299:106–113. DOI:10.1016/j.optcom.2013.02.027 · 1.45 Impact Factor
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    ABSTRACT: We discuss the use of active and passive InP membrane structures, heterogeneously integrated onto SOI passive circuits, for switching applications such as gating, wavelength conversion and all-optical flip-flopping. Devices include microdisk lasers and resonators, as well as travelling wave structures, in either electrically pumped or unpumped configuration. We also pay some attention to the fabrication aspects.
    OptoElectronics and Communications Conference and Photonics in Switching; 06/2013
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    ABSTRACT: We demonstrate a full functional 1×N optical packet switch employing a Silicon-on-Insulator integrated label extractor combined with a FPGA-based controller. Experimental results show error-free on-the-fly parallel and asynchronous optical label detection, processing and packet switching.
    OptoElectronics and Communications Conference and Photonics in Switching; 06/2013

Publication Stats

3k Citations
302.46 Total Impact Points


  • 1450–2014
    • Technische Universiteit Eindhoven
      • Department of Electrical Engineering
      Eindhoven, North Brabant, Netherlands
  • 2013
    • Ghent University
      • Department of Information Technology
      Gand, Flemish, Belgium
    • The Optical Society
      Society Hill, New Jersey, United States
  • 2009–2010
    • The University of Tokyo
      • Research Center for Advanced Science and Technology
      Tokyo, Tokyo-to, Japan
  • 2005–2009
    • National Technical University of Athens
      • School of Electrical and Computer Engineering
      Athens, Attiki, Greece
  • 2007
    • Delft University of Technology
      Delft, South Holland, Netherlands
  • 2002–2006
    • VU University Amsterdam
      • Department of Physics and Astronomy
      Amsterdamo, North Holland, Netherlands
  • 2003–2004
    • University of Pretoria
      • Department of Electrical, Electronic and Computer Engineering
      Pretoria, Gauteng, South Africa
  • 1996–1998
    • Utrecht University
      • Department of Earth Sciences
      Utrecht, Utrecht, Netherlands