A locally one-dimensional finite difference time domain method for the analysis of a periodic structure at oblique incidence
| Autor: | Junji Yamauchi, Jun Shibayama, Yuu Wakabayashi, Hisamatsu Nakano |
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| Rok vydání: | 2011 |
| Předmět: |
Imagination
media_common.quotation_subject Mathematical analysis Structure (category theory) Finite-difference time-domain method Physics::Optics Grating Condensed Matter Physics Dispersion (optics) Broadband General Earth and Planetary Sciences Periodic boundary conditions Electrical and Electronic Engineering Mathematics Photonic crystal media_common |
| Zdroj: | Radio Science. 46 |
| ISSN: | 0048-6604 |
| DOI: | 10.1029/2011rs004730 |
| Popis: | [1] An implicit finite difference time domain (FDTD) method is developed to analyze periodic structures at oblique incidence. The split-field technique is applied to the locally one-dimensional (LOD) FDTD method with the periodic boundary condition. In addition, the dispersion control parameters are introduced to reduce the numerical dispersion error. The effectiveness of the present method is investigated through the analysis of a photonic band gap structure. It is shown that the computational time is reduced to ≅16% of that of the explicit FDTD method with acceptable results being maintained. As an application, a broadband mirror consisting of a subwavelength grating is analyzed and discussed. |
| Databáze: | OpenAIRE |
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