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在光折变晶体中可通过光诱导来产生光子晶格,对偶极孤子在光子晶格中的传输特性进行研究,通过数值仿真发现,偶极光束入射到对角晶格点时,改变光折变晶体上的外加电场强度、入射振幅以及光诱导晶格深度,偶极光束的传输会出现不同的传输结果。研究结果表明,由于光诱导晶格的存在,入射偶极光束可以克服两峰间的相互作用;当外加电场强度、入射振幅和晶格深度三个条件匹配时,异相偶极孤子存在且能稳定传输,而同相偶极孤子总是不稳定的,当光束强度较低时,其不稳定性较弱。
In the photorefractive crystal, a photonic lattice can be generated by light induction, and the transfer characteristic of the dipole soliton in the photonic lattice is studied. The numerical simulation shows that when the dipole beam is incident on the diagonal lattice point, the photonic lattice The applied electric field strength, incident amplitude and light-induced lattice depth on the crystal change, and the transmission of the dipole beam will show different transmission results. The results show that due to the existence of light-induced lattice, the incident dipole beam can overcome the interaction between the two peaks. When the conditions of applied electric field, incident amplitude and lattice depth match, the out-phase dipole soliton exists Stable transmission, and the same phase dipole solitons are always unstable, when the beam intensity is low, its instability is weak.