论文标题
反方向耦合器的可调非线性光谱
Tunable nonlinear spectra of anti-directional couplers
论文作者
论文摘要
我们产生由线性耦合的正反向反向索引组成的抗方向耦合器（ADC）的传播和反射光谱，并具有内在的KERR非线性。反射和传输都在一个在一定的增益值中的两个不同波长处具有两个高度扩增的峰，从而可以设计一个波长选择性模式扩增系统。我们还预测，除了由于KERR效应而导致红色和蓝移外，还可以稳健地增强收益和损失的融合，从而强劲地增强了受衰减影响的反射光谱。特别是，具有相同增益和损失系数的ADC被详细考虑。
We produce transmission and reflection spectra of the anti-directional coupler (ADC) composed of linearly-coupled positive- and negative-refractive-index arms, with intrinsic Kerr nonlinearity. Both reflection and transmission feature two highly amplified peaks at two distinct wavelengths in a certain range of values of the gain, making it possible to design a wavelength-selective mode-amplification system. We also predict that a blend of gain and loss in suitable proportions can robustly enhance reflection spectra which are detrimentally affected by the attenuation, in addition to causing red and blue shifts owing to the Kerr effect. In particular, ADC with equal gain and loss coefficients, is considered in necessary detail.
