Optoelectronics Letters

, Volume 13, Issue 6, pp 401–404 | Cite as

Q-factor improvement of degenerate four-wave-mixing regenerators for ASE degraded signals

  • Hang Lu (卢行)
  • Bao-jian Wu (武保剑)
  • Yong Geng (耿勇)
  • Xing-yu Zhou (周星宇)
  • Fan Sun (孙凡)


All-optical regenerators can be used to suppress amplified spontaneous emission (ASE) noise introduced by cascaded erbium doped fiber amplifiers (EDFAs) in optical fiber communication systems and lead to the improvement of optical receiver sensitivity. By introducing the Q-factor transfer function (QTF), we evaluate the Q-factor performance of degenerate four-wave mixing (DFWM) regenerators with clock pump and reveal the differences between the optimal input powers determined from the static and dynamic power tranfer function (PTF) and the QTF curves. Our simulation shows that the clock-pump regnerator is capable of improving the Q-facor and receiver sensitivity for 40 Gbit/s ASE-degraded return-to-zero on-off keying (RZ-OOK) signal by 2.58 dB and 4.2 dB, respectively.

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Copyright information

© Tianjin University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  • Hang Lu (卢行)
    • 1
  • Bao-jian Wu (武保剑)
    • 1
  • Yong Geng (耿勇)
    • 1
  • Xing-yu Zhou (周星宇)
    • 1
  • Fan Sun (孙凡)
    • 1
  1. 1.Key Lab of Optical Fiber Sensing and Communications, Ministry of EducationUniversity of Electronic Science and Technology of ChinaChengduChina

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