Semiconductor optical amplifier used as regenerator for degraded differential phase-shift keying signals
Xi Li-Xia(席丽霞)a)†, Li Jian-Ping(李建平) a), Du Shu-Cheng(杜树成)b), Xu Xia(徐霞)a), and Zhang Xiao-Guang(张晓光) a)
aKey Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China; bCollege of Nucleus Science and Technology, Beijing Normal University, Beijing 100875, China
Abstract Phase and amplitude regeneration are necessary for degraded differential phase-shift keying communication systems. This paper proposes a regenerator based on semiconductor optical amplifier for differential phase-shift keying signals. The key regeneration mechanism is theoretically analysed. The effectiveness of semiconductor optical amplifier based regenerator is demonstrated by comparing the bit error rate and eye diagrams before and after regeneration for 40-Gbit/s differential phase-shift keying 1080-km transmission systems. The results show that regeneration effects are very well. Bit error rate is less than 10-12 with the regenerator.
(Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics)
Fund: Project supported by the Scientific Fund for Chinese Universities (Grant No. BUPT 2009RC0413), and the National "863" High Technology Projects (Grant No. 2009AA01Z224).
Cite this article:
Xi Li-Xia(席丽霞), Li Jian-Ping(李建平), Du Shu-Cheng(杜树成), Xu Xia(徐霞), and Zhang Xiao-Guang(张晓光) Semiconductor optical amplifier used as regenerator for degraded differential phase-shift keying signals 2011 Chin. Phys. B 20 024214
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