LCOS-Based 4×4 Wavelength Cross-Connect Switch For Flexible Channel Management in ROADMs

Sakurai, Yasuhisa; Kawasugi, Masahiro; Hotta, Yuji; Khan, Md. Saad; Oguri, H.; Takeuchi, Katsuyoshi; Michihata, S.; Uehara, Noboru

doi:10.1364/ofc.2011.otum4

Cited by 15 publications

(7 citation statements)

References 2 publications

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“…1(a)). Indeed, WSS prototype response times are around 0.1 second for an (un)block operation of a single channel [32]. It is relevant to recall that manufacturer specifications usually report a maximum time that corresponds to commands operating the entire C band, e.g., 80 fixed-grid ITU-T channels.…”

Section: Wss Response Timementioning

confidence: 99%

Traffic Allocation Strategies in WSS-Based Dynamic Optical Networks

Shakeri¹,

Garrich

Bravalheri³

et al. 2017

J. Opt. Commun. Netw.

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-Elastic optical networking (EON) is a viable solution to meet future dynamic capacity requirements of Internet Service Provider (ISP) and inter-datacenter networks. At the core of EON, Wavelength Selective Switches (WSSs) are applied to individually route optical circuits, while assigning an arbitrary bandwidth to each circuit. Critically, the WSS control scheme and configuration time may delay the creation time of each circuit in the network. In this paper, we first detail the WSS-based optical data-plane implementation of a metropolitan network test-bed. Then, we review an SDN application, designed to enable dynamic and fast circuit setup. Subsequently, we introduce a WSS logical model that captures the WSS time-sequence and is used to estimate the circuit setup response time. Then, we present two batch service policies that aim to reduce the circuit-setup response time by bundling multiple WSS reconfiguration steps into a single SDN command. Resulting performance gains are estimated through simulation.

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Section: Wss Response Timementioning

confidence: 99%

Traffic Allocation Strategies in WSS-Based Dynamic Optical Networks

Shakeri¹,

Garrich

Bravalheri³

et al. 2017

J. Opt. Commun. Netw.

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“…The BV-WXC provides variable bandwidth in multiples of 50 GHz to accommodate elastic optical paths, as well as multicast functionality. A 44 LCoSbased WXC with variable channel bandwidth was experimentally demonstrated [96]. The channel bandwidth and center frequency can be tuned with minimum setting resolution of 1 GHz.…”

Section: D) Bandwidth-variable Wxc Node Architecturementioning

confidence: 99%

A Survey on OFDM-Based Elastic Core Optical Networking

Zhang

Leenheer

Morea³

et al. 2013

IEEE Commun. Surv. Tutorials

347

134

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Abstract-Orthogonalfrequency-division multiplexing (OFDM) is a modulation technology that has been widely adopted in many new and emerging broadband wireless and wireline communication systems. Due to its capability to transmit a high-speed data stream using multiple spectral-overlapped lower-speed subcarriers, OFDM technology offers superior advantages of high spectrum efficiency, robustness against inter-carrier and inter-symbol interference, adaptability to server channel conditions, etc. In recent years, there have been intensive studies on optical OFDM (O-OFDM) transmission technologies, and it is considered a promising technology for future ultra-high-speed optical transmission. Based on O-OFDM technology, a novel elastic optical network architecture with immense flexibility and scalability in spectrum allocation and data rate accommodation could be built to support diverse services and the rapid growth of Internet traffic in the future. In this paper, we present a comprehensive survey on OFDM-based elastic optical network technologies, including basic principles of OFDM, O-OFDM technologies, the architectures of OFDMbased elastic core optical networks, and related key enabling technologies. The main advantages and issues of OFDM-based elastic core optical networks that are under research are also discussed.

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“…1(a)). Indeed, WSS prototype response times are around 0.1 second for an (un)block operation of a single channel [10]. It is relevant to recall that manufacturer specifications usually report a maximum time that corresponds to commands operating the entire C band, e.g., 80 fixed-grid ITU-T channels.…”

Section: B Optical Data-plane Configuration Response Timementioning

confidence: 99%

Demonstration of dynamic traffic allocation in an SDN-enabled metropolitan optical network test-bed

Garrich

Bravalheri

Magalhaes

et al. 2016

2016 International Conference on Optical Network Design and Modeling (ONDM)

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Elastic optical networking (EON) is a viable solution to accomplish future capacity requirements of network operators. EON relies on reconfigurable optical add/drop multiplexers (ROADMs) capable of routing arbitrary channel bandwidths usually based on wavelength selective switches (WSSs). In this context, control-plane implementations (including signaling latency) and configuration times of WSSs are the two major contributors to delay the creation of label-switched paths (LSPs) in highly dynamic traffic scenarios. In this paper, we first show the optical data-plane implementation and operation in a metropolitan optical network. Then, we propose and experimentally demonstrate techniques to exploit the advantages of the centralized network's control logic intrinsic in SDN. Results prove the suitability of our proposals to enable fast LSP establishment in scenarios with high dynamic traffic.

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LCOS-Based 4×4 Wavelength Cross-Connect Switch For Flexible Channel Management in ROADMs

Cited by 15 publications

References 2 publications

Traffic Allocation Strategies in WSS-Based Dynamic Optical Networks

Traffic Allocation Strategies in WSS-Based Dynamic Optical Networks

A Survey on OFDM-Based Elastic Core Optical Networking

Demonstration of dynamic traffic allocation in an SDN-enabled metropolitan optical network test-bed

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