Fiber nonlinearity mitigation using phase-conjugated OFDM subcarriers

Author

Xingwen Yi ; Dengke Zeng ; Xuemei Chen ; Jing Zhang ; Kun Qiu

Author_Institution

Key Lab. of Opt. Fiber Sensing & Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2014

fDate

27-29 Aug. 2014

Firstpage

1

Lastpage

2

Abstract

Digital coherent superposition (DCS) provides an interesting approach to combat the fiber nonlinearity by trading off the spectrum efficiency. In this paper, we apply DCS of phase-conjugated OFDM subcarriers in two approaches. One is the DCS of OFDM subcarriers in the single polarization, denoted as SP-DCS-OFDM. The other is in the dual polarizations, or DP-DCS-OFDM. We show that both of them can cancel the fiber nonlinearity to the first order. We compare their performance in a simulation of long-distance nonlinear transmissions. With some difference, both approaches improve the Q-factor by much larger than 3 dB.

Keywords

OFDM modulation; Q-factor; optical fibre networks; optical fibre polarisation; optical modulation; DP-DCS-OFDM; Q-factor; SP-DCS-OFDM; digital coherent superposition; dual polarizations; fiber nonlinearity mitigation; long-distance nonlinear transmissions; phase-conjugated OFDM subcarriers; single polarization; spectrum efficiency; OFDM; Optical fiber communication; Optical fiber dispersion; Optical fiber polarization; Optical transmitters; Q-factor; OFDM; fiber nonlinearity; phase conjugation;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Internet 2014 (COIN), 2014 12th International Conference on

Conference_Location

Jeju

Type

conf

DOI

10.1109/COIN.2014.6950537

Filename

6950537