Kramers-Kronig Receivers for 100-km Datacenter Interconnects

In this paper, we review in detail experimental demonstrations of Kramers-Kronig (KK) based direct detection systems with high per-carrier interface rates, high spectral efficiencies, and ∼100-km reach. Two realizations of KK-based receivers are summarized, including single-polarization and dual-pol...

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Bibliographic Details
Published inJournal of lightwave technology Vol. 36; no. 1; pp. 79 - 89
Main Authors Chen, Xi, Antonelli, Cristian, Chandrasekhar, Sethumadhavan, Raybon, Gregory, Mecozzi, Antonio, Shtaif, Mark, Winzer, Peter
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Adaptive optics
Bandwidth
Data center interconnect
direct detection
Kramers–Kronig receiver
Optical distortion
Optical filters
Optical receivers
Optical transmitters
Polarization
Receivers
short-reach transmission
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ISSN0733-8724
1558-2213
DOI10.1109/JLT.2018.2793460

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Summary:In this paper, we review in detail experimental demonstrations of Kramers-Kronig (KK) based direct detection systems with high per-carrier interface rates, high spectral efficiencies, and ∼100-km reach. Two realizations of KK-based receivers are summarized, including single-polarization and dual-polarization versions. Critical aspects of the KK receiver such as the carrier-to-signal power ratio and receiver bandwidth limitations are discussed. We show 220-Gb/s single-diode detection and 4 × 240-Gb/s dual polarization (dual-diode) detection in a WDM system at 5.3 bits/s/Hz spectral efficiency.
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ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2018.2793460