中国物理B ›› 2008, Vol. 17 ›› Issue (3): 1000-1007.doi: 10.1088/1674-1056/17/3/042

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Towards 640Gbit/s wavelength conversion based on nonlinear polarization rotation in a semiconductor optical amplifier

冯传奋, 伍剑, 张君毅, 徐坤, 林金桐   

  1. The Key Laboratory of Optical Communication and Lightwave Technologies of MOE, BeijingUniversity of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2007-03-10 修回日期:2007-08-28 出版日期:2008-03-04 发布日期:2008-03-04
  • 基金资助:
    Project supported by the Ministry of Education of China (Grant Nos 105036 and NCET-04-0116).

Towards 640Gbit/s wavelength conversion based on nonlinear polarization rotation in a semiconductor optical amplifier

Feng Chuan-Fen(冯传奋)†, Wu Jian(伍剑), Zhang Jun-Yi(张君毅), Xu Kun(徐坤), and Lin Jin-Tong(林金桐)   

  1. The Key Laboratory of Optical Communication and Lightwave Technologies of MOE, BeijingUniversity of Posts and Telecommunications, Beijing 100876, China
  • Received:2007-03-10 Revised:2007-08-28 Online:2008-03-04 Published:2008-03-04
  • Supported by:
    Project supported by the Ministry of Education of China (Grant Nos 105036 and NCET-04-0116).

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摘要： Taking into account ultra-fast carrier dynamics, this paper models 640\,Gbit/s wavelength conversion scheme based on nonlinear polarization rotation (NPR) in a single semiconductor optical amplifier (SOA) and investigates the performance of this kind of wavelength conversion scheme in detail. In this model, two carrier temperature equations are introduced to substitute two energy density equations, which reduce the complexity of calculation in comparison with the previous model. The temporary gain and phase shift dynamics induced by ultra-short optical pulses are numerically simulated and the simulated results are qualitatively in good agreement with reported experimental results. Simulated results show that non-inverted and inverted 640\,Gbit/s wavelength conversions based on NPR are achieved with clear open eye diagrams. To further investigate the performance of the non-inverted wavelength conversion scheme, the dependence of output extinction ratio (ER) on some key parameters used in simulation is illustrated. Furthermore, simulated analyses show that high performance non-inverted wavelength conversion based on NPR can be achieved by using a red-shifted filtering scheme.

关键词: all-optical wavelength conversion, nonlinear polarization rotation, semiconductor optical amplifier, ultra-fast carrier dynamics

Abstract: Taking into account ultra-fast carrier dynamics, this paper models 640 Gbit/s wavelength conversion scheme based on nonlinear polarization rotation (NPR) in a single semiconductor optical amplifier (SOA) and investigates the performance of this kind of wavelength conversion scheme in detail. In this model, two carrier temperature equations are introduced to substitute two energy density equations, which reduce the complexity of calculation in comparison with the previous model. The temporary gain and phase shift dynamics induced by ultra-short optical pulses are numerically simulated and the simulated results are qualitatively in good agreement with reported experimental results. Simulated results show that non-inverted and inverted 640 Gbit/s wavelength conversions based on NPR are achieved with clear open eye diagrams. To further investigate the performance of the non-inverted wavelength conversion scheme, the dependence of output extinction ratio (ER) on some key parameters used in simulation is illustrated. Furthermore, simulated analyses show that high performance non-inverted wavelength conversion based on NPR can be achieved by using a red-shifted filtering scheme.

Key words: all-optical wavelength conversion, nonlinear polarization rotation, semiconductor optical amplifier, ultra-fast carrier dynamics

中图分类号:  (Frequency conversion; harmonic generation, including higher-order harmonic generation)

  • 42.65.Ky
42.25.Ja (Polarization) 42.55.Px (Semiconductor lasers; laser diodes) 42.60.By (Design of specific laser systems) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)