Gaussian Beam Propagation in a Kerr Type Metamaterial Medium Using ABCD Matrix Method

In this paper, a split step ABCD matrix method is suggested to investigate Gaussian beam propagation in a Kerr type metamaterial medium. This method is based on dividing the medium interval into subsequent steps.Meanwhile, Gaussian beam profile in every step is obtained by finding the ABCD matrix of that particular step, and is used to find the ABCD matrix of the next step. Results of the suggested matrix method have been compared with the results of numerical split-step Fourier method for a Kerr medium, which indicates a good agreement. Then, we use the ABCD matrix to investigate Gaussian beams propagation in a Kerr type metamaterial, which is also in agreement with pervious results by other methods.

背板互连线高速信号传输的计算机仿真

采用 ABCD矩阵法对传输高速信号的背板上具有频变参数的互连线建立等效时域网络模型 ,并给出接插件等效传输线模型和端接的 I/O缓冲器 IBIS瞬态行为模型 ,利用这些模型对实际电路进行仿真 ,其结果与 Ansoft公司的 PNC软件仿真结果相吻合 ,仿真效率有明显提高。

基于端口电量的抛物线型无损线的灵敏度公式

应用贝赛尔函数求解抛物线型无损线的电报方程可获得其准确的传输参数。根据伴随网络法导出了抛物线型无损线的频域灵敏度公式,克服了基于科罗达等效电路求灵敏度遇到的数值不稳定问题。通过实例验证了公式的正确性。