Phase noise influence in long-range coherent optical OFDM systems with delay detection, IFFT multiplexing and FFT demodulation

Jacobsen, Gunnar, Xu, Tianhua, Popov, Sergei, Sergeyev, Sergey and Zhang, Yimo (2012). Phase noise influence in long-range coherent optical OFDM systems with delay detection, IFFT multiplexing and FFT demodulation. Journal of Optical Communications, 33 (4), pp. 289-295.


We present a study of the influence of dispersion induced phase noise for CO-OFDM systems using FFT multiplexing/IFFT demultiplexing techniques (software based). The software based system provides a method for a rigorous evaluation of the phase noise variance caused by Common Phase Error (CPE) and Inter-Carrier Interference (ICI) including - for the first time to our knowledge - in explicit form the effect of equalization enhanced phase noise (EEPN). This, in turns, leads to an analytic BER specification. Numerical results focus on a CO-OFDM system with 10-25 GS/s QPSK channel modulation. A worst case constellation configuration is identified for the phase noise influence and the resulting BER is compared to the BER of a conventional single channel QPSK system with the same capacity as the CO-OFDM implementation. Results are evaluated as a function of transmission distance. For both types of systems, the phase noise variance increases significantly with increasing transmission distance. For a total capacity of 400 (1000) Gbit/s, the transmission distance to have the BER < 10-2 for the worst case CO-OFDM design is less than 800 and 460 km, respectively, whereas for a single channel QPSK system it is less than 1400 and 560 km.

Publication DOI:
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Additional Information: ©[2012] by Walter de Gruyter Berlin Boston. Volume 33, Issue 4, Pages 289–295, ISSN (Online) 2191-6322, ISSN (Print) 0173-4911, DOI:
Uncontrolled Keywords: coherent systems,orthogonal frequency division multiplexed systems,phase noise,RF pilot carrier,Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electrical and Electronic Engineering
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://www.degr ... c-2012-0047.xml (Publisher URL)
Published Date: 2012-12
Authors: Jacobsen, Gunnar
Xu, Tianhua
Popov, Sergei
Sergeyev, Sergey ( 0000-0002-1515-5019)
Zhang, Yimo



Version: Accepted Version

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