Dimensioning and energy efficiency of optical metro rings

Pointurier, Yvan; Ušćumlić, Bogdan; Cerutti, Isabella; Gravey, Annie; Antona, Jean‐Christophe

doi:10.1109/ondm.2012.6210197

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…Hybrid time/wavelength division multiplexing (TDM /WDM) systems could be the right trade-off between the high capacity provided by the WDM virtual point-to-point links and the TDM sub-wavelength switching granularity, allowing very efficient systems. Therefore, the WDM optical packet-switched network was proposed to unite these benefits and reduce the power consumption compared to circuit-based networks [5]. Ring nodes collect and aggregate the traffic from the access segment, into fixedduration optical packets and relay them to a WDM synchronous optical packet-ring network.…”

Section: Introductionmentioning

confidence: 99%

Semiconductor Optical Amplifier for Next Generation of High Data Rate Optical Packet-Switched Networks

Valicourt¹,

Adrover²,

Moroz³

et al. 2015

Some Advanced Functionalities of Optical Amplifiers

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This chapter provides an overview of considerations for the development of semiconductor optical amplifiers SO" for the next generations of packet-switched optical networks. SO" devices are suitable candidates in order to realize highperformance optical gates due to their high extinction ratio and fast switching time. However such devices also introduce linear and nonlinear noise. The impact of SO" devices on several modulation formats via theoretical model, numerical simulation, and experimental validation is studied. Impairments introduced by SO"s are considered in order to derive some general network design rules.Keywords: Semiconductor optical amplifier, optical packet-switched network, coherent communications, network design rules . IntroductionSince , coherent technology has paved the way toward high-capacity optical communications [ ]. Coherent systems allow transmitting information with multi-level modulation formats over both polarizations [polarization division multiplexing PΓM ] of light, which increases the spectral efficiency [bit/s/Hz b/s/Hz ] while relaxing the need for ultrahigh symbol rates to achieve data rates beyond Gb/s. Such technology is enabled by fast analogto-digital and digital-to-analog converters "ΓC and Γ"C , which, together with coherent receivers and robust digital signal processing ΓSP , allow for the generation and recovery of advanced modulation formats. PΓM-quadrature phase-shift keying QPSK and PΓM--quadrature amplitude modulation Q"M signaling at or Gbaud are currently used to develop and Gb/s transponders used in today's core networks. However, experimental In addition, data centers' global traffic presents a relentless growth, with % of such traffic flowing within data centers. The overall need of capacity together with the drop expected in coherent transponders' cost makes evident the expansion of coherent systems toward other network segments.Furthermore, the ever-emerging bandwidth-on-demand services in optical fiber networks induce distributed and bursty traffic profiles. Network flexibility and high efficiency are then required to handle these new traffic characteristics. Hybrid time/wavelength division multiplexing TΓM /WΓM systems could be the right trade-off between the high capacity provided by the WΓM virtual point-to-point links and the TΓM sub-wavelength switching granularity, allowing very efficient systems. Therefore, the WΓM optical packet-switched network was proposed to unite these benefits and reduce the power consumption compared to circuit-based networks [ ]. Ring nodes collect and aggregate the traffic from the access segment, into fixedduration optical packets and relay them to a WΓM synchronous optical packet-ring network.

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Section: Introductionmentioning

confidence: 99%

Semiconductor Optical Amplifier for Next Generation of High Data Rate Optical Packet-Switched Networks

Valicourt¹,

Adrover²,

Moroz³

et al. 2015

Some Advanced Functionalities of Optical Amplifiers

View full text Add to dashboard Cite

show abstract

“…Statistical multiplexing based on the switching of data with sub-wavelength granularity could be used in order to share the transport medium between several data flows. Therefore, optical packet-switched network was proposed for alleviating both drawbacks but also to reduce the power consumption compared to circuit-based networks [1]. In wavelength-division multiplexing (WDM) optical burst rings for metropolitan, access or data center networks, a fast optical packet blocker (PB) could be used to pass/block the incoming optical packets of each wavelength that transit along the ring network [2], [3].…”

Section: Introductionmentioning

confidence: 99%

A Next-Generation Optical Packet-Switching Node Based on Hybrid III-V/Silicon Optical Gates

Valicourt¹,

Moroz²,

Jennevé³

et al. 2014

IEEE Photon. Technol. Lett.

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We report a hybrid silicon optical gate array based on a silicon waveguide with a III-V gain medium and two vertical grating couplers. The gates show a fast switching time, a high extinction ratio, and a positive fiber-to-fiber optical gain. The dynamic behavior of such a device is evaluated under electrically controlled gating. We further focus on a single gate performance in a packet-switched network. We demonstrate subwavelength switching operations with multiformat and multibit-rate optical packet based on direct and coherent detection.Index Terms-Semiconductor optical amplifier, silicon photonic, optical gate, packet optical add/drop multiplexer, WDM packet-switched network.

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