Multimode transceiver for interfacing to multicore graded-index fiber capable of carrying 120-Gb/s over 100-m lengths

Lee, B. G.; Kuchta, D.M.; Doany, F. E.; Schow, Clint L.; Baks, Christian; John, R.; Pepeljugoski, P.; Taunay, T. F.; Zhu, Bin; Yan, M. F.; Oulundsen, George; Vaidya, Durgesh S.; Luo, Wenbin; Li, N.

doi:10.1109/photonics.2010.5699012

Cited by 8 publications

(5 citation statements)

References 1 publication

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“…Taking it a step further, a completely photonic integrated transceiver (TxRx) chip has been demonstrated with 24 channels reaching 300Gbps bidirectional capacity, using arrays of low-power consumption VCSELs and high-speed photodiodes [98]. Based on that research, further progress has been made, leading to an integrated transceiver chip which has both VCSELs Tx and Photodiodes (PD) Rx interface in order to be directly butt-coupled to a Multi-Core Multi-Mode fiber [99], [100]. Using the 6 outer cores of the fiber as spatial channels, up to 20Gbps was supported per channel and the whole link demonstrated 120Gbps total bandwidth.…”

Section: Sdm Transmitters (Tx) Receivers (Rx) and Transceivers (Tmentioning

confidence: 99%

Survey and Evaluation of Space Division Multiplexing: From Technologies to Optical Networks

Saridis

Alexandropoulos

Zervas

et al. 2015

IEEE Commun. Surv. Tutorials

292

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Single Mode Fiber's physical capacity boundaries will soon be reached, so alternative solutions are much needed to overcome the multiplying and remarkably large bandwidth requests. Space division multiplexing (SDM) using multicore fibers (MCF), multi-element fibers (MEF), multimode fibers (MMF) and their combination; fewmode multicore fibers (FM-MCF) or fibers based on orbital angular momentum (OAM), are considered to be the propitious stepping-stones to overcome the capacity crunch of conventional single-core fibers. We critically review research progress on SDM fibers and network components and we introduce two figures of merit (FoM) aiming in quantitative evaluation of technologies such as amplifiers, fanin/fan-out multiplexers, transmitters, switches, SDM nodes. Results show that SDM fibers achieve an 1185fold (18-fold) Spectral-Spatial Efficiency increase compared to the 276-SMF bundle (single-core fiber) currently installed on the ground. In addition, an analysis of crosstalk in MCFs shows how SDM concepts can be exploited further to fit in various optical networks, such as core, metro and especially future intra-datacenter optical interconnects. Finally, research challenges and future directions are discussed.reinforce diverse future optical network types, such as datacenters and metro/core networks, are demonstrated. Furthermore, we critically review other major networking aspects considering SDM network and node concepts and components, such as SDM Reconfigurable Optical Add/Drop Multiplexers (ROADMs), Self-homodyne detection and Multiple Input Multiple Output -Digital Signal Processing (MIMO-DSP) on SDM receivers, routing and core allocation complexity in MCFs as well as multidimensionality and granularity in switching. A study on the inter-core crosstalk interference constraint of MCFs for SDM networks is included. The outcomes of our analysis are specific MCF design rules considering the crosstalk vs fiber core-pitch relation and network link distance with regards to the end application; i.e. 10m to 1km for Intra-DC or tens to hundreds of kilometers for metro/core networks. Different network classes are examined in the light of the outcomes of this analysis, resulting in a complete report on the challenges and the role of SDM in future high-capacity scalable optical networks. Finally, section V discusses challenges, potential use-cases and future directions of SDM.

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Section: Sdm Transmitters (Tx) Receivers (Rx) and Transceivers (Tmentioning

confidence: 99%

Survey and Evaluation of Space Division Multiplexing: From Technologies to Optical Networks

Saridis

Alexandropoulos

Zervas

et al. 2015

IEEE Commun. Surv. Tutorials

292

View full text Add to dashboard Cite

show abstract

“…The commercially available 3D light waveguide technologies provide MCF to SMF interface with a compact design [25]. Furthermore, VCSEL/PD arrays can potentially be designed to match the MCF/MEF cross-section [26] [27]. Such technologies make the SDM MUX/DEMUX unnecessary, and the overall footprint and power consumption can be reduced dramatically.…”

Section: Key Technology Enablers For Proposed Architecture 1) Spacmentioning

confidence: 99%

Archon: A Function Programmable Optical Interconnect Architecture for Transparent Intra and Inter Data Center SDM/TDM/WDM Networking

Yan

Hugues-Salas

Rancaño

et al. 2015

J. Lightwave Technol.

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This paper reports all-optical, function programmable, transparent, intra-inter data center networking (DCN) using space and time division multiplexing (SDM/TDM) within data centers and wavelength division multiplexing (WDM) between data centers. A multi-element fiber (MEF) is used for SDM transmission to provide a large quantity of optical links between the top-of-racks (ToRs) and the function programmable cluster switch. Beam-steering large-port-count fiber switches (LPFS), used as central cluster switches and inter-cluster switch, provide a single hop optical circuit switching (OCS) solution, and also enable network function programmability for DCN to support variable traffic patterns and different network functions. A TDM switch as a plug-in function provides intra-cluster communication with variable capacity and low latency. The flat-structured intra data center architecture, with a circuit-switched SDM and TDM hybrid network enables scalable, large-capacity and low-latency DCN communication. In addition, all-optical ToR-to-ToR inter-DCN is realizedthrough metro/core networks. A highly-nonlinear fiber (HNLF) based all-optical SDM-to-WDM converter transfers three SDM signals to 3-carrier spectral superchannel signals, which are transmitted to the destination DCN, through the metro/core networks. The all-optical ToR-ToR cross-DCN connections enable the geographically distributed DCNs to appear as one big data center.

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“…The receiver also yielded 100% of the 24 channels, but provides significantly reduced speed compared to the transmitter due to bandwidth limitations in the receiver front-end 5 . Eye diagrams are shown at 12.5 Gb/s in Fig.…”

Section: Performancementioning

confidence: 99%

“…Furthermore, the cores are contained within a standard cladding dimension of approximately 125 μm. We demonstrate an end-to-end transmission of 120 Gb/s by transmitting and receiving six 20-Gb/s signals through the six outer cores of the seven-core fiber 4,5 . Crosstalk measurements with all channels enabled confirm the viability of this approach.…”

Section: Introductionmentioning

confidence: 99%

Multicore fiber link demonstrating large bandwidth density for future multimode optical interconnects

et al. 2012

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Future fiber systems in computer communications applications must meet growing bandwidth requirements, while maintaining feasible power and cost targets in addition to maintaining manageable volumes of fiber cabling. Therefore, bandwidth-per-fiber represents a critical design metric for next-generation systems. Here, a multicore fiber technology based on multimode graded-index cores is reviewed. A full link demonstration using six cores transmitting up to 20 Gb/s each is achieved between custom transmitter and receiver assemblies, which interface directly to the multicore fiber. The demonstrated technology may provide the added bandwidth per link required in next generation HPC systems.

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Multimode transceiver for interfacing to multicore graded-index fiber capable of carrying 120-Gb/s over 100-m lengths

Cited by 8 publications

References 1 publication

Survey and Evaluation of Space Division Multiplexing: From Technologies to Optical Networks

Survey and Evaluation of Space Division Multiplexing: From Technologies to Optical Networks

Archon: A Function Programmable Optical Interconnect Architecture for Transparent Intra and Inter Data Center SDM/TDM/WDM Networking

Multicore fiber link demonstrating large bandwidth density for future multimode optical interconnects

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