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Toward cost-efficient 100G metro networks using IM/DD, 10-GHz components, and MLSE receiver
Publikationstyp
Journal Article
Date Issued
2015-07-15
Sprache
English
Author(s)
Institut
TORE-URI
Journal
Volume
33
Issue
19
Start Page
4109
End Page
4117
Article Number
7173003
Citation
Journal of Lightwave Technology 33 (19): 7173003 4109-4117 (2015-10-01)
Publisher DOI
Scopus ID
Publisher
OSA
We demonstrate the generation and transmission of 28-Gb/s data employing inexpensive, off-the-shelf, 10-GHz 3-dB bandwidth optical components, intensity modulation (IM), direct detection (DD), and a digital signal processing-based receiver over uncompensated fiber links. We prove that the proposed technology is an enabler for next-generation 100-G cost-efficient point-to-point dispersion compensation fiber (DCF)-free metro networks up to 80 km, as well as for multispan metro-ring networks up to 400 km, consisting of cascaded erbium-doped fiber amplifiers and DCFs as in real-field implementations. Key techniques to enable transmission are the employment of signal predistortion in the transmitter to compensate for the components' limited bandwidth, a maximum likelihood sequence estimator (MLSE)-based receiver, and a high-performance sampling phase adjustment algorithm. Furthermore, we show that performance can be optimized, while at the same time the complexity of the electronic dispersion compensation part is significantly reduced by exploiting a simplified variant of MLSE that makes use of a reduced number of states. Results in this paper reveal the potentiality of our proposed scheme for a low-cost transition to 100 Gb/s ( 4 × 28 Gb/s) wavelength division multiplexed, point-to-point, metro-core, and multispan metro-ring networks, employing inexpensive optical components and the traditional cost-efficient IM/DD scheme.
Subjects
chromatic dispersion
digital signal processing
direct detection
maximum likelihood detection
Metropolitan area networks
optical fiber communication
optical fiber networks
DDC Class
004: Informatik