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Digital linearization of direct-detection transceivers for spectrally-efficient 100 Gb/s/λ WDM metro networking
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Li, Zhe, Erkılınç, M. Sezer, Shi, Kai, Sillekens, Eric, Galdino, Lidia, Xu, Tianhua, Thomsen, Benn C., Bayvel, Polina and Killey, Robert I. (2018) Digital linearization of direct-detection transceivers for spectrally-efficient 100 Gb/s/λ WDM metro networking. IEEE Journal of Lightwave Technology, 36 (1). pp. 27-36. doi:10.1109/JLT.2017.2777858 ISSN 0733-8724.
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Official URL: https://doi.org/10.1109/JLT.2017.2777858
Abstract
Single-polarization, single-photodiode based direct-detection (DD) transceivers offer advantages for metro networks due to their simple and low-cost optical hardware structure. Single-sideband Nyquist-pulse-shaped subcarrier modulation (SSB Nyquist-SCM) is a promising signal format to achieve high information spectral density (ISD) in such DD systems. In this paper, we present theoretical and experimental evaluations of a variety of direct-detection SSB Nyquist-SCM system designs, operating at 100 Gb/s per wavelength in WDM metro network scenarios. Through simulations, several receiver-based digital linearization techniques to overcome the effect of signal-signal beat interference were investigated, and their performance compared with alternative approaches, including optical beat-interference cancellation receivers (BICRx) and coherent receivers (both heterodyne and homodyne). Subsequently, experimental assessments of the digitally-linearized DD receivers were carried out. Spectrally-efficient (net ISD exceeding 3 (b/s)/Hz) 4 × 112 Gb/s WDM DD single-sideband 16-QAM Nyquist-SCM transmission over distances of up to 240 km (multi-span links) and 160 km (single-span links without mid-span amplification) were shown to be possible using uncompensated standard single mode fiber.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Metropolitan area networks (Computer networks), Wavelength division multiplexing | ||||||||
Journal or Publication Title: | IEEE Journal of Lightwave Technology | ||||||||
Publisher: | IEEE | ||||||||
ISSN: | 0733-8724 | ||||||||
Official Date: | 1 January 2018 | ||||||||
Dates: |
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Volume: | 36 | ||||||||
Number: | 1 | ||||||||
Page Range: | pp. 27-36 | ||||||||
DOI: | 10.1109/JLT.2017.2777858 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 29 November 2017 | ||||||||
Date of first compliant Open Access: | 29 November 2017 | ||||||||
RIOXX Funder/Project Grant: |
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