Digital Compensation of Intercarrier Nonlinear Distortion With Carrier Phase Locking

Author

Yamazaki, Etsushi ; Inuzuka, Fumikazu ; Yonenaga, Kazushige ; Takada, Atsushi ; Miyamoto, Yutaka

Author_Institution

Nippon Telegraph & Telephone (NTT) Network Innovation Labs., NTT Corp., Yokosuka, Japan

Volume

28

Issue

5

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

828

Lastpage

836

Abstract

Compensating for intercarrier nonlinear distortion allows launching higher power into the transmission fiber and it leads to an increase in the transmission distance. Numerical calculations show that the launch power is increased by 10 dB and the maximum transmission distance is more than tripled, when the optical repeater spacing of 80 km, dispersion-shifted fiber, and signal format of 10 Gb/s nonreturn-to-zero are assumed. It is experimentally demonstrated that waveform distortion due to the four-wave mixing (FWM) among different carriers in wavelength-division multiplexing (WDM) becomes deterministic by phase-locking optical carriers and that FWM distortion can be compensated at 5 Gb/s with three-channel condition by employing DSP at the transmitter or receiver.

Keywords

channel spacing; compensation; multiwave mixing; nonlinear distortion; optical distortion; optical fibre communication; optical fibre dispersion; optical modulation; optical phase locked loops; optical receivers; optical repeaters; optical transmitters; signal processing; wavelength division multiplexing; FWM distortion; WDM; bit rate 10 Gbit/s; bit rate 5 Gbit/s; digital compensation; dispersion-shifted fiber receiver; dispersion-shifted fiber transmitter; distance 80 km; four-wave mixing; intercarrier nonlinear distortion; launch power; nonreturn-to-zero signal format; optical carrier phase-locking; optical repeater spacing; three-channel condition; transmission distance; waveform distortion; wavelength-division multiplexing; Coherent; digital; fiber; four-wave mixing (FWM); intercarrier; nonlinear; optical; processing; signal; transmission;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2009.2033615

Filename

5280357