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A new formulation of the perfectly matched layer (PML) for the semivectorial finite-difference time-domain (FDTD) method in optical waveguide simulation is presented by incorporating the infinite-impulse response (IIR) digital filter technique. The complex frequency-shifted PML is implemented through Z transformation, where the second-order derivatives in semivectorial FDTD are realized by two cascaded first-order recursive IIR digital filters. The numerical examples indicate that the new scheme has better performance compared with the normal PML.
Published in:
Photonics Technology Letters, IEEE
(Volume:15
,
Issue:
11
)
Date of Publication: Nov. 2003
- Page(s):
- 1552 - 1554
- ISSN :
- 1041-1135
- INSPEC Accession Number:
- 7779373
- Digital Object Identifier :
- 10.1109/LPT.2003.818650
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 27 October 2003
- Issue Date :
- Nov. 2003
- Sponsored by :
- IEEE Photonics Society
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