Effect of the phase-error of local oscillators in digital back-propagation

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effect of the phase-error of local oscillators (LOs) on the performance of wavelength-division multiplexing (WDM) optical transmission systems employing digital back-propagation (DBP) is investigated. A simple model describing the performance degradation due to the phase-error is developed, and the validity of it is demonstrated by numerical simulations of 20-GHz-spaced-nine-channel orthogonal frequency division multiplexing (OFDM)-modulated transmissions. It is also shown that, whereas the variance of the phase-error should be less than 5° for the full benefit of the DBP, the performance is significantly improved by the DBP even when there is no control on the phase of LOs.

Original languageEnglish
Article number6966716
Pages (from-to)363-366
Number of pages4
JournalIEEE Photonics Technology Letters
Volume27
Issue number4
DOIs
StatePublished - 2015 Feb 15

Fingerprint

phase error
Backpropagation
oscillators
frequency division multiplexing
digital systems
wavelength division multiplexing
Light transmission
Wavelength division multiplexing
Orthogonal frequency division multiplexing
degradation
Degradation
Computer simulation
simulation

Keywords

  • Digital back propagation
  • Optical fiber communication
  • Phase-error of local oscillators
  • Wdm transmission

Cite this

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Effect of the phase-error of local oscillators in digital back-propagation. / Park, Sang Gyu.

In: IEEE Photonics Technology Letters, Vol. 27, No. 4, 6966716, 15.02.2015, p. 363-366.

Research output: Contribution to journalArticle

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AB - The effect of the phase-error of local oscillators (LOs) on the performance of wavelength-division multiplexing (WDM) optical transmission systems employing digital back-propagation (DBP) is investigated. A simple model describing the performance degradation due to the phase-error is developed, and the validity of it is demonstrated by numerical simulations of 20-GHz-spaced-nine-channel orthogonal frequency division multiplexing (OFDM)-modulated transmissions. It is also shown that, whereas the variance of the phase-error should be less than 5° for the full benefit of the DBP, the performance is significantly improved by the DBP even when there is no control on the phase of LOs.

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