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中文摘要：
基于加偏压的单光子光折变晶体,理论推导了线性和二次电光效应共同主导下的亮孤子族和暗孤子族的解,数值研究了亮孤子族和暗孤子族的强度包络和稳定特性,讨论了线性和二次电光效应在孤子族形成中的不同作用.结果表明：线性和二次电光效应的相互作用能够增强亮孤子族的光折变非线性,而减弱暗孤子族的光折变非线性.此外,在传输过程中,亮孤子族的各个分量能够稳定传输;暗孤子族各个分量在较长传输距离时表现出不稳定性.
英文摘要：
Based on the biased one-photon photorefractive crystals, the solutions of incoherently coupled bright and dark soliton families governed simultaneously by linear and quadratic electro-optic effects were derived theoretically.The intensity profile and stability of soliton families were investigated.The different functions of the linear and quadratic electro-optic effects were discussed and the results show that, the interplay between the linear and quadratic electro-optic effects can enhance the photorefractive nonlinearity for bright soliton families but weaken the photorefractive nonlinearity for dark soliton families.Moreover, the bright soliton components can remain invariant during propagation process, and the dark soliton components show instability for long propagation distance.
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