Numerical Method for Analysis of Waveguide Modes in Planar Gradient Waveguides
This paper presents a numerical method developed to find propagation constants of planar waveguide localized modes. The method is based on both the Fourier transform application and the wave equation solution in a frequency domain. As a result, integral equation is obtained where integral is replace...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Kaunas University of Technology
2014-09-01
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| Series: | Medžiagotyra |
| Subjects: | |
| Online Access: | http://matsc.ktu.lt/index.php/MatSc/article/view/4841 |
| Summary: | This paper presents a numerical method developed to find propagation constants of planar waveguide localized modes. The method is based on both the Fourier transform application and the wave equation solution in a frequency domain. As a result, integral equation is obtained where integral is replaced by sum. Finally, a task to find propagation constants and field Fourier transforms in a discrete form is led to the eigenvalue/eigenvector problem. This method provides high accuracy subject to the conditions of the Whittaker-Shannon sampling theorem, and it is characterized by high numerical stability. The method is tested on many examples. <p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.20.3.4841">http://dx.doi.org/10.5755/j01.ms.20.3.4841</a></p> |
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| ISSN: | 1392-1320 2029-7289 |