Effect of the Phase-Error of Local Oscillators in Digital Back-Propagation

Author

Sang-Gyu Park

Author_Institution

Dept. of Electron. Eng., Hanyang Univ., Seoul, South Korea

Volume

27

Issue

4

fYear

2015

fDate

Feb.15, 15 2015

Firstpage

363

Lastpage

366

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.

Keywords

OFDM modulation; optical fibre communication; oscillators; wavelength division multiplexing; OFDM; digital back-propagation; local oscillators; phase-error; wavelength-division multiplexing optical transmission systems; Fiber nonlinear optics; Noise; Optical distortion; Optical fibers; Wavelength division multiplexing; Optical fiber communication; WDM transmission; digital back propagation; phase-error of local oscillators;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2374534

Filename

6966716