中国物理B ›› 2003, Vol. 12 ›› Issue (4): 415-418.doi: 10.1088/1009-1963/12/4/313

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Influence of group-velocity mismatch on soliton switching in a nonlinear fibre coupler

王东宁1, 黄德修2, 李宏3   

  1. (1)Department of Electrical Engineering, The Hong Kong Polytechnic University Hung Hom, Kowloon, Hong Kong, China; (2)Department of Optoelectronic Engineering, Huazhong University of Science and Technology Wuhan 430074, China; (3)Department of Optoelectronic Engineering, Huazhong University of Science and Technology Wuhan 430074, China; Department of Physics, Hubei Normal University Huangshi 435002, China
  • 收稿日期:2002-09-29 修回日期:2002-12-10 出版日期:2003-04-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the ICTP (International Centre for Theoretical Physics) Programme for Training and Research in Italian Laboratory, Trieste, Italy (Grant No. BC:402 (2001)).

Influence of group-velocity mismatch on soliton switching in a nonlinear fibre coupler

Li Hong (李宏)ab, Huang De-Xiu (黄德修)a, Wang Dong-Ning (王东宁)c   

  1. a Department of Optoelectronic Engineering, Huazhong University of Science and Technology Wuhan 430074, China; b Department of Physics, Hubei Normal University Huangshi 435002, China; c; Department of Electrical Engineering, The Hong Kong Polytechnic University Hung Hom, Kowloon, Hong Kong, China
  • Received:2002-09-29 Revised:2002-12-10 Online:2003-04-16 Published:2005-03-16
  • Supported by:
    Project supported by the ICTP (International Centre for Theoretical Physics) Programme for Training and Research in Italian Laboratory, Trieste, Italy (Grant No. BC:402 (2001)).

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摘要： In this work, the influence of group-velocity mismatch on soliton self-routing pulse switching in a nonlinear fibre coupler is discussed in detail by the use of both variational approach and numerical simulation. The results obtained show that the group-velocity mismatch leads to the relative displacement between the two orthogonal polarization modes, increase of the critical power, and reduction of the elimination-light ratio. For sub-ps pulse, the influence cannot be neglected.

Abstract: In this work, the influence of group-velocity mismatch on soliton self-routing pulse switching in a nonlinear fibre coupler is discussed in detail by the use of both variational approach and numerical simulation. The results obtained show that the group-velocity mismatch leads to the relative displacement between the two orthogonal polarization modes, increase of the critical power, and reduction of the elimination-light ratio. For sub-ps pulse, the influence cannot be neglected.

Key words: self-routing pulse switching, group-velocity mismatch, fibre coupler, soliton

中图分类号:  (Propagation, scattering, and losses; solitons)

  • 42.81.Dp
42.81.Gs (Birefringence, polarization) 42.81.Qb (Fiber waveguides, couplers, and arrays) 42.65.Pc (Optical bistability, multistability, and switching, including local field effects) 42.65.Tg (Optical solitons; nonlinear guided waves) 02.60.Cb (Numerical simulation; solution of equations)