中国物理B ›› 2011, Vol. 20 ›› Issue (11): 114212-114212.doi: 10.1088/1674-1056/20/11/114212

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Joint nonlinearity and chromatic dispersion pre-compensation for coherent optical orthogonal frequency-division multiplexing systems

乔耀军, 刘学君, 纪越峰   

  1. Key Laboratory of Information Photonics and Optical Communications of Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2011-02-17 修回日期:2011-06-16 出版日期:2011-11-15 发布日期:2011-11-15
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009AA01A345), the National Basic Research Program of China (Grant No. 2011CB302702), and the National Natural Science Foundation of China (Grant No. 60932004).

Joint nonlinearity and chromatic dispersion pre-compensation for coherent optical orthogonal frequency-division multiplexing systems

Qiao Yao-Jun(乔耀军)†, Liu Xue-Jun (刘学君), and Ji Yue-Feng (纪越峰)   

  1. Key Laboratory of Information Photonics and Optical Communications of Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2011-02-17 Revised:2011-06-16 Online:2011-11-15 Published:2011-11-15
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009AA01A345), the National Basic Research Program of China (Grant No. 2011CB302702), and the National Natural Science Foundation of China (Grant No. 60932004).

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摘要： This paper introduces a joint nonlinearity and chromatic dispersion pre-compensation method for coherent optical orthogonal frequency-division multiplexing systems. The research results show that this method can reduce the walk-off effect and can therefore equalize the nonlinear impairments effectively. Compared with the only other existing nonlinearity pre-compensation method, the joint nonlinearity and chromatic dispersion pre-compensation method is not only suitable for low-dispersion optical orthogonal frequency-division multiplexing system, but also effective for high-dispersion optical orthogonal frequency-division multiplexing transmission system with higher input power but without optical dispersion compensation. The suggested solution does not increase computation complexity compared with only nonlinearity pre-compensation method. For 40 Gbit/s coherent optical orthogonal frequency-division multiplexing 20×80 km standard single-mode fibre system, the suggested method can improve the nonlinear threshold (for Q > 10 dB) about 2.7, 1.2 and 1.0 dB, and the maximum Q factor about 1.2, 0.4 and 0.3 dB, for 2, 8 and 16 ps/(nm·km) dispersion coefficients.

Abstract: This paper introduces a joint nonlinearity and chromatic dispersion pre-compensation method for coherent optical orthogonal frequency-division multiplexing systems. The research results show that this method can reduce the walk-off effect and can therefore equalize the nonlinear impairments effectively. Compared with the only other existing nonlinearity pre-compensation method, the joint nonlinearity and chromatic dispersion pre-compensation method is not only suitable for low-dispersion optical orthogonal frequency-division multiplexing system, but also effective for high-dispersion optical orthogonal frequency-division multiplexing transmission system with higher input power but without optical dispersion compensation. The suggested solution does not increase computation complexity compared with only nonlinearity pre-compensation method. For 40 Gbit/s coherent optical orthogonal frequency-division multiplexing 20×80 km standard single-mode fibre system, the suggested method can improve the nonlinear threshold (for Q > 10 dB) about 2.7, 1.2 and 1.0 dB, and the maximum Q factor about 1.2, 0.4 and 0.3 dB, for 2, 8 and 16 ps/(nm·km) dispersion coefficients.

Key words: fibre optics, nonlinearity, chromatic dispersion, coherent optical orthogonal frequency-division multiplexing

中图分类号:  (Phase conjugation; photorefractive and Kerr effects)

  • 42.65.Hw
42.79.Sz (Optical communication systems, multiplexers, and demultiplexers?)