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Optical Engineering • Open Access

Enhanced frequency-domain fractionally spaced equalization for coherent optical transmission system with colored noise
Author(s): Ming Hao; Lianshan Yan; Anlin Yi; Lin Jiang; Yan Pan; Wei Pan; Bin Luo

Paper Abstract

An enhanced minimum mean-square-error (MMSE) frequency-domain (FD) fractionally spaced equalizer (FSE) for polarization demultiplexing is proposed in the presence of colored noise. The 2-norm of the estimated channel matrix and polynomial fitting of equalization coefficients are introduced to mitigate the colored noise without requiring knowledge of the optical and electrical filtering. Simulation results show that ∼3-dB improvement of equalization performance is achieved compared to conventional MMSE FD-FSE in an 8×112-Gbit/s wavelength-division multiplexing polarization-division multiplexing-quadrature phase shift keying transmission system over a 1200-km single mode fiber link.

Paper Details

Date Published: 28 June 2017
PDF: 6 pages
Opt. Eng. 56(6) 066116 doi: 10.1117/1.OE.56.6.066116
Published in: Optical Engineering Volume 56, Issue 6
Show Author Affiliations
Ming Hao, Southwest Jiaotong Univ. (China)
Sichuan Univ. of Science and Engineering (China)
Lianshan Yan, Southwest Jiaotong Univ. (China)
Anlin Yi, Southwest Jiaotong Univ. (China)
Lin Jiang, Southwest Jiaotong Univ. (China)
Yan Pan, Southwest Jiaotong Univ. (China)
Wei Pan, Southwest Jiaotong Univ. (China)
Bin Luo, Southwest Jiaotong Univ. (China)

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