J4 ›› 2011, Vol. 28 ›› Issue (4): 461-466.

• Nonlinear Optics • Previous Articles     Next Articles

Numerical simulation of shape evolution of third-order soliton pair under quintic nonlinear effect

YUE Jin, WANG Rong-cheng   

  1. Department of Physics, Taiyuan Normal University, Taiyuan 030031, China
  • Received:2010-09-28 Revised:2010-10-26 Published:2011-07-28 Online:2011-07-06

Abstract:

The interaction between two neighboring third-order solitons was numerically studied under quintic nonlinear effect. The results show that the positive quintic nonlinear effect can lead to the shape of the third-order soliton pair further worsening and in-phase and out-phase third-order soliton pair are both split under negative quintic nonlinear quickly. If the third-order soliton pair has the same phase the two split optical pulses with lower peak value lie inside. It is found that the third-solitons attract each other and collide into one optical pulse. If the third-order soliton pair has opposite phase the two split optical pulses with lower peak value lie outside and keep the state of repulsion. When the third-soliton pair has the opposite phase, the bigger the absolute value of the negative quintic nonlinear parameter is, the more the number of the solitons splited from third-order soliton pair are. The results also show that the interactions between two neighboring third-order solitons may be well suppressed under appropriate parameters of the negative quintic nonlinearity.

Key words: optical communication, quintic nonlinearity, third-order soliton pair, split, interaction

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