利用空间相位调制技术和数值分析的方法,讨论了高斯光束在强非局域非线性平板波导中的传输问题,发现只要介质的响应具有对称性,光束就会有相同的演化规律,可控的空间相位调制参数不仅能让光束自偏转还能实现分束,其全新特性在全光开关及分光器上有潜在的应用价值.
The basic idea is to impose sinusoidal phase modulation to an optical beam and then make it propagate in a strongly nonlocal nonlinear medium with normalized symmetrical real spatial response.The spatial phase modulation splits the input beam into multiple sub-beams, while the nonlocal nonlinear medium shapes the sub-beams into spatial solitons, whose directions and power can be controlled by changing the modulation parameters.We present numerical results to show how the deflection and the detachment of beams are achieved.