The future of optical interconnects for data centers: A review of technology trends

Aleksić, Slaviša

doi:10.23919/contel.2017.8000037

Cited by 10 publications

(2 citation statements)

References 34 publications

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“…With the overall performances and advantages, it is promising for optical circuit switching in future communication networks, e.g. robust and green data centers [48,49].…”

Section: Discussionmentioning

confidence: 99%

Planar polarization-routing optical cross-connects using nematic liquid crystal waveguides

Li¹,

Chen²,

Yu³

et al. 2018

Opt. Express

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This paper presents the device design and performance analysis of a novel design of planar optical cross-connect (OXC) using nematic liquid crystal (NLC) waveguides. It employs N × N switching matrix in cross-bar fabric. In each unit cell, the input light is set in either the transverse electric (TE) mode or the transverse magnetic (TM) mode by electrically reorienting the NLC in the waveguide. The light then enters a passive waveguide and is routed to different paths depending on the polarization state (TE/TM mode). A sample device of 8 × 8 OXC is analyzed for performance estimation, which predicts a maximum on-chip insertion loss of 3 dB, an average cross-talk of -40 dB, ~1 ms switching time, and 2 mm × 2 mm footprint. The proposed OXC is unique in the switching mechanism of polarization-dependent routing and allows non-blocking switching with high compactness and broad bandwidth. It is potential for optical circuit switching in data centers and optical communication networks.

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“…With the overall performances and advantages, it is promising for optical circuit switching in future communication networks, e.g. robust and green data centers [48,49].…”

Section: Discussionmentioning

confidence: 99%

Planar polarization-routing optical cross-connects using nematic liquid crystal waveguides

Li¹,

Chen²,

Yu³

et al. 2018

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Moreover, the nature of these applications and the intrinsic characteristics of networks mean that an enormous proportion of this traffic stays within the datacenter, accounting for 71.5% of the total. In such a challenging landscape, operators struggle to keep pace with the increasing demand for speed, cost, and energy efficiency [3,4].…”

Section: Introductionmentioning

confidence: 99%

High-Speed VCSEL-Based Transceiver for 200 GbE Short-Reach Intra-Datacenter Optical Interconnects

et al. 2019

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The soaring demand for higher speeds in datacenters to address the relentless growth of the global IP traffic places optical interconnects in the spotlight. In this manuscript, we present a high-speed optical transceiver for intra-datacenter connectivity. The transceiver is based on single-mode, single-polarization high-speed vertical-cavity surface-emitting lasers (VCSELs), a VCSEL driver chip, and a linear receiver. Following a step-by-step approach, we present the architectures, assembly processes, and experimental results from the different modules. More specifically, we demonstrate (1) a data transmission experiment at 80 Gb/s using PAM-4 (four-level Pulse Amplitude Modulation) modulation for a reach of up to 500 m by employing a single-mode VCSEL module, and (2) a full-link experiment proving up to 64 Gb/s per lane capacity using PAM-4 signaling of the VCSEL-based optical transceiver test vehicles in back-to-back configuration and up to 56 Gb/s for 500 m and 2 km transmission distances. The acquired experimental results verify the suitability of the optical transceiver for intra-datacenter interconnects’ applications.

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Optical Wireless Communications: Research Challenges for MAC Layer

2022

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The future of optical interconnects for data centers: A review of technology trends

Cited by 10 publications

References 34 publications

Planar polarization-routing optical cross-connects using nematic liquid crystal waveguides

Planar polarization-routing optical cross-connects using nematic liquid crystal waveguides

High-Speed VCSEL-Based Transceiver for 200 GbE Short-Reach Intra-Datacenter Optical Interconnects

Optical Wireless Communications: Research Challenges for MAC Layer

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