Demonstration of 8&amp;#x00D7;40-Gb/s wavelength-striped packet switching in a multi-terabit capacity optical network test-bed

Lai, Caroline P.; Brunina, Daniel; Bergman, Keren

doi:10.1109/photonics.2010.5699075

Cited by 9 publications

(10 citation statements)

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“…The 4×4 optical network test-bed ( photonic switching nodes [10]. Four semiconductor optical amplifiers (SOAs) are used at each 2×2 switching node, gated either on or off, to transparently pass the wavelengthstriped optical packets (Fig.…”

Section: Optical Interconnection Networkmentioning

confidence: 99%

“…The experimental setup, fully detailed in [10], is comprised of a 2-stage 4×4 optical network test-bed that routes optical packets from any input to any output port. The 4×4 optical network test-bed is comprised of commercially available components, including SOAs, 155-Mb/s photodetectors, passive optical components, and high-speed electronic circuitry.…”

Section: A 40-gb/s Ook Overviewmentioning

confidence: 99%

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A Data Rate- and Modulation Format-Independent Packet-Switched Optical Network Test-Bed

Brunina

Lai²,

Bergman

2012

IEEE Photon. Technol. Lett.

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Abstract-Adopting high data rates and advanced modulation formats in optical interconnection networks will enable future computing systems to achieve greater performance and scalability. We experimentally demonstrate the data rate and modulation format independence of a 4 × 4 optical packetswitched network test-bed. Leveraging wavelength-division multiplexing, we show the transmission of multiwavelength 320-Gb/s optical packets, using 8 × 40-Gb/s wavelength-striped payloads. Both on-off keying (OOK) and differential-phase-shift-keying (DPSK) modulation formats are investigated. Optical packets are correctly routed through the network, and error-free operation is confirmed for all wavelengths with bit-error rates less than 10 −12 . Best-case power penalties of 1 dB for OOK data and 0.52 dB for DPSK streams are obtained.Index Terms-Differential phase-shift keying (DPSK), optical communication, packet switching, photonic switching systems.

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Section: Optical Interconnection Networkmentioning

confidence: 99%

Section: A 40-gb/s Ook Overviewmentioning

confidence: 99%

A Data Rate- and Modulation Format-Independent Packet-Switched Optical Network Test-Bed

Brunina

Lai²,

Bergman

2012

IEEE Photon. Technol. Lett.

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“…Our implemented optical interconnection network enables the bandwidth and latency performance of the OCM system to meet the demands of heavily loaded data centers that exceed hundreds of thousands of nodes [27,29]. The aggregate optical memory bandwidth in this experiment is limited to 10 Gb/s by the FPGA's electronic transceivers.…”

Section: E Architectural Analysis and Discussionmentioning

confidence: 99%

“…The memory access operations are streamed through a multi-terabit capacity 4 × 4 optical interconnection network test-bed [27]. The test-bed consists of six non-blocking 2 × 2 photonic switching nodes organized as a multistage Banyan network topology.…”

Section: Optical Interconnection Networkmentioning

confidence: 99%

Building Data Centers With Optically Connected Memory

Brunina¹,

Lai

Garg

et al. 2011

J. Opt. Commun. Netw.

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Abstract-Future data centers will require novel, scalable memory architectures capable of sustaining high bandwidths while still achieving low memory access latencies. Electronic interconnects cannot meet the challenges presented by the need for multi-terabit off-chip memory data paths. In this work, the electronic bus between main memory and its host processor is replaced with a circuit-switched optical interconnection network. We investigate the impact of our optically connected memory system on large-scale architectures and experimentally validate the protocol using field-programmable gate array based processor nodes and a custom-designed memory controller. The processor communicates all-optically with multiple synchronous dynamic random access memory nodes using 4×2.5-Gb/s wavelength-striped payloads, operating error free with bit-error rates less than 10 −12 .

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“…AND IMPLEMENTATION The multiwavelength packet multicast investigations are performed on a switching fabric implementation that is based on a previously demonstrated OPS architecture [33], [34]. The fabric aims to optically interconnect access network edge users or computing network ports.…”

Section: Optical Switching Fabric Architecturementioning

confidence: 99%

Broadband Multicasting for Wavelength-Striped Optical Packets

Lai

Bergman

2012

J. Lightwave Technol.

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Abstract-Wavelength-striped optical packet multicasting comprises a potentially important functionality for future energy-efficient network applications. We report on two multicast-capable architectures to experimentally demonstrate multiwavelength packet multicasting in an optical switching fabric testbed. The first design uses programmable packet-splitter-and-delivery that simultaneously supports the nonblocking unicast, multicast, and broadcast of high-bandwidth optical packets with parallel switches. This realization achieves the error-free multicasting of optical messages with 8 10 Gb/s payloads, with confirmed bit-error rates less than , and scalability of per-channel data rates to 40 Gb/s. We then introduce a second multistage multicasting architecture with lower hardware and energy costs, with the design trade-off of more complex routing logic; the experimental demonstration shows the successful switching and error-free multicasting of 8 10 Gb/s optical packets. The energy costs in terms of the capital and operational expenditures are then compared for the two designs, showing the benefits of the second multicast architecture.Index Terms-Future internet, multicast networks, optical communication, photonic switching systems, routing, wavelength-division multiplexing (WDM).

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Demonstration of 8×40-Gb/s wavelength-striped packet switching in a multi-terabit capacity optical network test-bed

Cited by 9 publications

References 0 publications

A Data Rate- and Modulation Format-Independent Packet-Switched Optical Network Test-Bed

A Data Rate- and Modulation Format-Independent Packet-Switched Optical Network Test-Bed

Building Data Centers With Optically Connected Memory

Broadband Multicasting for Wavelength-Striped Optical Packets

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