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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 2 — Jan. 28, 2013
  • pp: 2500–2505

Fast dispersion estimation in coherent optical 16QAM fast OFDM systems

J. Zhao and H. Shams  »View Author Affiliations

Optics Express, Vol. 21, Issue 2, pp. 2500-2505 (2013)

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Fast channel estimation is crucial to increase the payload efficiency which is of particular importance for optical packet networks. In this paper, we propose a novel least-square based dispersion estimation method in coherent optical fast OFDM (F-OFDM) systems. Additionally, we experimentally demonstrate for the first time a 37.5 Gb/s 16QAM coherent F-OFDM system with 480 km transmission using the proposed scheme. The results show that this method outperforms the conventional channel estimation methods in minimizing the overhead load. A single training symbol can achieve near-optimum channel estimation without any prior information of the transmission distance. This makes optical F-OFDM a very promising scheme for the future burst-mode applications.

© 2013 OSA

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4080) Fiber optics and optical communications : Modulation

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: December 3, 2012
Revised Manuscript: January 10, 2013
Manuscript Accepted: January 17, 2013
Published: January 25, 2013

J. Zhao and H. Shams, "Fast dispersion estimation in coherent optical 16QAM fast OFDM systems," Opt. Express 21, 2500-2505 (2013)

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  1. L. A. Neto, A. Gharba, P. Chanclou, N. Genay, B. Charbonnier, M. Ouzzif, C. A. Berthelemot, and J. L. Masson, “High bit rate burst mode optical OFDM for next generation passive optical networks,” in Proc. European Conference on Optical Communication (2010), paper Tu.3.B.5.
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  11. J. Zhao and A. D. Ellis, “Transmission of 4-ASK optical fast OFDM with chromatic dispersion compensation,” IEEE Photon. Technol. Lett.24(1), 34–36 (2012). [CrossRef]
  12. C. Lei, H. Chen, M. Chen, and S. Xie, “A high spectral efficiency optical OFDM scheme based on interleaved multiplexing,” Opt. Express18(25), 26149–26154 (2010). [CrossRef] [PubMed]
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