对五阶非线性效应下三阶孤子间的相互作用进行了数值研究,结果表明:正五阶非线性作用将会导致三阶孤子对波形进一步恶化.在负五阶非线性作用下,原来的三阶孤子很快发生裂变,三阶孤子对同相位时,裂变后峰值小的两孤脉冲位于内侧,两个三阶孤子表现出先吸引、碰撞,然后聚合成一个孤脉冲.三阶孤子对反相位时,裂变后峰值强度小的孤脉冲位于外侧,并且一直保持排斥状态,每个三阶孤子裂变数目随负五阶非线性参数绝对值的增大而增多.适当选取负五阶非线性参数值,可以有效地抑制三阶孤子间的相互作用.
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