含Kerr非线性的一维光子晶体中的类孤子

Solitonlike in Nonlinear Photonic Crystals

研究了含Kerr非线性的一维光子晶体中的类孤子。计算了光子晶体中加入Kerr非线性材料后,类孤子和入射光强、Kerr系数以及线性势阱的关系。随着线性势阱的降低,对应于在线性带隙中开始出现类孤子本征模所需要的最小入射强度也降低,即降低了非线性阈值;尽管非线性是产生类孤子的根本原因,但非线性系数对产生类孤子及孤子环中环的影响不如线性势阱高度的影响显著。

Solitonlike in the one-dimensional photonic crystals with Kerr nonlinearity was investigated. The relationship between solitonlike and the incident intensity, Kerr coefficient or linear photonic quantum well was calculated. It was found that with the reduction of linear photonic quantum well, rich and varied solitonlike electromagnetic modes appear in the gap. The lower linear photonic quantum well, the less the incident intensity of the first solitonlike appear. Although nonlinear is the essential reason caused solitonlike , the height of linear photonic quantum well play an important role.