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The cavity resonator design: stochastic optimization of the transmission line method

机译：腔谐振器设计：随机优化传输线方法

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摘要

Stable cavity resonators provide an ideal solution for high quality applications in telecommunications, laser sources, sensors, oscillators and filters, instrumentation and other large area of applications. For the determination of the electromagnetic field (EMF) properties in a cavity resonator several numerical methods are widely used, hi our approach we used the transmission line modeling method (TLM). It is a wide-band time-domain numerical method suitable for solution of the electromagnetic field in a studied region. TLM method is based on the isomorphism between the theory of passive electrical network and the wave equation describing the properties of the EMF. TLM method offers two important advantages over the time-domain techniques such as the finite-difference time domain methods. The electric and magnetic field are resolved synchronously in time and space and TLM in implicitly stable method due to the mapping to electrical circuits. The EMF in the rectangular cavity is in our approach determined by the TLM method and the frequency spectrum is computed by the Fourier transform of the time signal. The theoretical model of the cavity EMF power spectral density function contains information about the geometrical configuration of the resonator. In our work we use the genetic algorithm for the determination of optimal dimensions of the cavity resonator expected for the proposed output resonant frequency. The stochastic modification of the theoretical model parameters is controlled by the genetic operators of mutation, crossover and selection, leading to overall improvement of the theoretical model estimation during the optimization process.
机译：稳定的腔谐振器为电信，激光源，传感器，振荡器和滤波器，仪器仪表以及其他大范围应用领域的高质量应用提供了理想的解决方案。为了确定腔谐振器中的电磁场（EMF）特性，广泛使用了几种数值方法。在我们的方法中，我们使用了传输线建模方法（TLM）。它是一种宽带时域数值方法，适合求解研究区域中的电磁场。 TLM方法基于无源电网理论与描述EMF特性的波动方程之间的同构。与时域技术（例如有限差分时域方法）相比，TLM方法具有两个重要优势。由于映射到电路，因此以隐式稳定的方法在时间和空间上以及TLM中以同步方式解析了电场和磁场。在我们的方法中，矩形腔中的EMF是通过TLM方法确定的，而频谱是通过时间信号的傅立叶变换来计算的。腔EMF功率谱密度函数的理论模型包含有关谐振器几何结构的信息。在我们的工作中，我们使用遗传算法来确定对于所建议的输出谐振频率所期望的腔谐振器的最佳尺寸。理论模型参数的随机修改受突变，交叉和选择的遗传算子控制，从而在优化过程中全面改进了理论模型估计。

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  • 来源
    《Photonics, devices, and systems V》|2011年|p.83060P.1-83060P.6|共6页
  • 会议地点 Prague(CS)
  • 作者

    Stanislav Jurecka; Jarmila Muellerova; Milan Dado;

  • 作者单位

    Department of Engineering Fundamentals, Faculty of Electrical Engineering,University of Zilina, Nalepku 1390, 03101 Liptovsky Mikulas, Slovakia;

    Department of Engineering Fundamentals, Faculty of Electrical Engineering,University of Zilina, Nalepku 1390, 03101 Liptovsky Mikulas, Slovakia;

    Department of Telecommunications and Multimedia, Faculty of Electrical Engineering,University of Zilina, Univerzitna 8215/1,01026 Zilina, Slovakia;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程光学;
  • 关键词

    waveguides; transmission lines; genetic algorithm;

    机译：波导传输线；遗传算法;

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