提出了准方波形空间光孤子的可能性。
The probability of quasi-square wave spatial solitons is also involved.
当初始功率等于临界功率时，可以得到空间光孤子。
When the input power equals the critical power, a spatial optical soliton occurs;
本文主要对光折变空间光孤子的时间行为进行了研究。
The temporal behavior of photorefractive spatial solitons is studied in this thesis.
强非局域空间光孤子是指满足强非局域条件的空间孤子。
Strong optical spatial solitons are solitons that satisfy the strong nonlocal condition.
当初始功率等于这一临界功率，光束从光腰处入射时，可得到椭圆厄米高斯空间光孤子。
When the initial power is equal to the critical power and light beam is incident at the beam waist, the elliptical Hermite-Gaussian spatial optical soliton is obtained.
对向列相液晶中空间光孤子产生机制进行了详细的阐述，并对其目前的研究进展进行了概括介绍。
The physical mechanism of the spatial solitons in nematic liquid crystals is discussed, and the research progress of these spatial solitons are introduced summarily.
分析研究了空间光孤子脉冲化后在反常群速色散的克尔非线性平面光波导中的传输特性和稳定性。
Evolution of pulses obtained by modulating spatial optical solitons in a Kerr nonlinearity planar waveguide with anomalous dispersion is investigated.
光折变空间光孤子是指当光折变材料的自聚焦效应与光束的衍射发散作用相平衡时，在介质内无衍射向前传播的光束。
Photorefractive (PR) spatial solitons form when the self-focusing of a light beam inside the PR material exactly balances the diffraction of the beam.
用解析方法和数值方法在理论上研究了光折变晶体中的稳态矢量空间光孤子及有偏压光伏光折变晶体中光束的调制不稳定性；
The steady state vector spatial solitons in photorefractive crystals and the modulation instability in biased photorefractive-photovoltaic crystals are studied by both analytic and numerical methods.
研究表明不论是准单色还是多色的部分相干空间光孤子在传输过程中都不是严格稳定的，并且多色光孤子的稳定性受到频率的影响。
The study shows that both kinds of solitons are all unstable, and we find the stability of polychromatic partially coherent optical spatial solitons is affected by light frequency.
通过数值方法直接求解非线性薛定格方程以及变分法近似求出了束缚于一个“凹槽”中的单个空间光孤子解，这种光孤子的存在没有阈值范围，且总是稳定传输的。
By means of the variational approximation and direct simulations we demonstrate the one-soliton state trapped in a channel has no existence threshold and is always stable.
基于相干密度理论，数值地研究了在饱和对数非线性介质中多个部分非相干光空间孤子之间的相互作用。
We investigate numerically the interactions of multiple partially incoherent spatial solitons in a nonlinear medium with logarithmic saturable nonlinearity based on the coherent density approach.
用数值方法研究了在具有光致异构非线性的聚合物中光学空间孤子的垂直全光调控。
In the photoisomerized polymer, the perpendicular and all-optical control of optical spatial soliton is simulated by numerical method.
用数值方法分析了多个平行传播一维光伏空间亮孤子之间的相干相互作用。
We present a numerical study of coherent collisions of multi photovoltaic bright spatial solitons.
基于相干密度理论，数值地研究了在饱和对数非线性介质中多个部分非相干光空间孤子之间的相互作用。
We investigate numerically the interaction between incoherent spatial solitons in a nonlinear medium with logarithmic saturable nonlinearity base on the coherent density approach.
基于空间暗光孤子诱导波导的模式特性以及光波在波导间耦合理论，提出了一种实现光控可变定向耦合器的方法。
A photovoltaic spatial soliton theory of duotone signal beam with monochrone background beam is presented, and a solution of bright soliton has been obtained by a numberical method.
从有限高斯背景下空间暗光孤子诱导折射率分布出发，用等效衰减矢量法得到它所自诱导的波导的色散特性。
We use the equal-attenuation-vector method, to numerically study dispersion characters of dark spatial soliton induced waveguide under limited background.
预言了亮-亮，暗-暗和亮-暗非相干耦合空间孤子对可存在于中心对称光折变介质中。
Incoherently coupled dark-dark , bright-bright and bright-dark screening soliton pairs in centrosymmetric photorefractive crystals are possible due photorefractive effect.
预言了亮-亮，暗-暗和亮-暗非相干耦合空间孤子对可存在于中心对称光折变介质中。
Incoherently coupled dark-dark , bright-bright and bright-dark screening soliton pairs in centrosymmetric photorefractive crystals are possible due photorefractive effect.
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