2016
DOI: 10.1109/jstqe.2016.2582345
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Silicon-Photonics Microring Links for Datacenters—Challenges and Opportunities

Abstract: The rapid growth of warehouse-scale datacenters demands high-throughput optical interconnects that can span short-to-medium reach distances (< few kilometers). Microringbased silicon-photonics links with single mode fibers (SMFs) are highly promising for these applications. This paper presents an analysis of microring-based links from the holistic perspective of optical devices, CMOS circuits, and system-level link budget and energy-efficiency simulations. Design considerations and tradeoffs for the receiver, … Show more

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Cited by 33 publications
(10 citation statements)
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“…The total optical link budgets are calculated based on (5), where P SMF−att , P EC−IL , P Si−att , P splitter−IL,EL , P PS−IL , P DC−IL and P penalty represent the attenuation introduced by the SMF fiber, fiber to chip coupling loss, silicon waveguide attenuation, splitter insertion and excess loss, phase shifters' insertion loss, total adiabatic coupling insertion loss and network penalty, respectively. The network penalty takes into account further impairments due to extinction ratio, cross talk, intersymbol interference (ISI) and laser RIN 4 . (5) Fig.…”
Section: B Optical Network Link Budgetmentioning
confidence: 99%
See 1 more Smart Citation
“…The total optical link budgets are calculated based on (5), where P SMF−att , P EC−IL , P Si−att , P splitter−IL,EL , P PS−IL , P DC−IL and P penalty represent the attenuation introduced by the SMF fiber, fiber to chip coupling loss, silicon waveguide attenuation, splitter insertion and excess loss, phase shifters' insertion loss, total adiabatic coupling insertion loss and network penalty, respectively. The network penalty takes into account further impairments due to extinction ratio, cross talk, intersymbol interference (ISI) and laser RIN 4 . (5) Fig.…”
Section: B Optical Network Link Budgetmentioning
confidence: 99%
“…Integrated silicon photonics (SiP) circuits have been popularly employed in high-speed links to move data at a rate of tens of Gb/s, where optical modulation is more efficient than electronic switching for transmitting data over significant distances 3 . Optical modulation can be realized using Mach Zehnder modulators (MZMs) or microring modulators (MRMs) 4 . MZMs are broadband and easily support complex modulation schemes 3 .…”
Section: Introductionmentioning
confidence: 99%
“…In reference works [18] [8] [5], co-optimization is performed on actual links by changing supply voltages and/or bias currents to achieve the best link energy-efficiency at a given data rate and biterror rate (BER). In [19], the trade-offs that set the limit for the receiver sensitivity are analyzed. Then, the energyefficiency of the link is calculated using state-of-the-art photonic devices and laser drivers.…”
Section: Introductionmentioning
confidence: 99%
“…However, input capacitance is not adjustable post-fabrication. Equationbased approaches in [19] and [20] tend to make idealized approximations and assumptions in developing the models which introduce modeling inaccuracies.…”
Section: Introductionmentioning
confidence: 99%
“…Photonic integrated circuits (PICs) can realize high-speed optical communication and computing through the dense-integration of high-performance devices with minimal form factors [1], [2]. Specifically, silicon PICs are compatibile with CMOS fabrication processes, which enables largescale integration at low-cost.…”
Section: Introductionmentioning
confidence: 99%