Abstract
Based on the Finite-Difference Time-Domain (FDTD) method, the perfectly matched layer (SAC-PML) absorbing boundary conditions (ABCs) combined with periodic boundary conditions (PBCs) were applied to the grating numerical model. Numerical calculations of spectral properties of the grating and smooth-surface structures were carried out. Absorptance of these two structures was obtained when the TM wave was used as the incident wave, and the metallic grating-coupled surface plasmon polarizations (SPPs) and the microcavity mode were discussed. The results indicate that, the absorptance of grating structure can be enhanced significantly compared with that of smooth-surface structure due to the present of SPPs and microcavity mode.
| Original language | English |
|---|---|
| Pages (from-to) | 80-84 |
| Number of pages | 5 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 32 |
| Issue number | 1 |
| State | Published - Jan 2011 |
Keywords
- Finite-difference time-domain method
- Grating
- Spectral property
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