中国物理B ›› 2007, Vol. 16 ›› Issue (7): 1986-1990.doi: 10.1088/1009-1963/16/7/030

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Different operation states of soliton pulses in an erbium-doped fibre ring laser

张书敏1, 吕福云2, 龚岩洞3, 杨秀峰3   

  1. (1)Department of Physics, Hebei Normal University, Shijiazhuang 050016, China;Lightwave Department, Institute for Infocomm Research (I2R), Singapore; (2)Institute of Physics, Nankai University, Tianjin 300071, China; (3)Lightwave Department, Institute for Infocomm Research (I2R), Singapore
  • 收稿日期:2006-02-07 修回日期:2006-08-20 出版日期:2007-07-20 发布日期:2007-07-04
  • 基金资助:
    Project supported by the Hebei Natural Science Foundation, China (Grant Nos~ F2006000183 and 2001241) and the Science Foundation of Hebei Normal University, China (Grant No L2005B05).

Different operation states of soliton pulses in an erbium-doped fibre ring laser

Zhang Shu-Min(张书敏)a) c) , Lü Fu-Yun(吕福云)b), Gong Yan-Dong(龚岩洞)c), and Yang Xiu-Feng(杨秀峰)c )   

  1. a Department of Physics, Hebei Normal University, Shijiazhuang 050016, China;; b Institute of Physics, Nankai University, Tianjin 300071, China; c Lightwave Department, Institute for Infocomm Research (I2R), Singapore
  • Received:2006-02-07 Revised:2006-08-20 Online:2007-07-20 Published:2007-07-04
  • Supported by:
    Project supported by the Hebei Natural Science Foundation, China (Grant Nos~ F2006000183 and 2001241) and the Science Foundation of Hebei Normal University, China (Grant No L2005B05).

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摘要： We report on the experimental observation of soliton pulses in an erbium doped fibre ring laser. The passive mode-locking is achieved using the nonlinear polarization rotation technique. By adjusting the pump power and the intracavity polarization controllers, a normal soliton, a stable 8th harmonic mode-locked pulse and a noise-like pulse have been observed in our laser. The experimental results revealed that the noise-like pulse is not suitable for the optical telecommunication, and in order to obtain the stable harmonic mode-locked soliton, a strong unstable CW laser field is necessary to mediate global soliton interaction. The formation mechanism of the harmonic mode-locked pulse has also been analysed.

关键词: fibre laser, soliton, mode-locking

Abstract: We report on the experimental observation of soliton pulses in an erbium doped fibre ring laser. The passive mode-locking is achieved using the nonlinear polarization rotation technique. By adjusting the pump power and the intracavity polarization controllers, a normal soliton, a stable 8th harmonic mode-locked pulse and a noise-like pulse have been observed in our laser. The experimental results revealed that the noise-like pulse is not suitable for the optical telecommunication, and in order to obtain the stable harmonic mode-locked soliton, a strong unstable CW laser field is necessary to mediate global soliton interaction. The formation mechanism of the harmonic mode-locked pulse has also been analysed.

Key words: fibre laser, soliton, mode-locking

中图分类号:  (Optical solitons; nonlinear guided waves)

  • 42.65.Tg
42.55.Wd (Fiber lasers) 42.60.Fc (Modulation, tuning, and mode locking)