Tunable frequency filtering by using dielectric waveguides
- Authors
- Kang, Ji-Hun; Park, Q. -Han
- Issue Date
- 9월-2008
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- leaky wave; waveguide; frequency filtering
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.53, no.3, pp.1698 - 1701
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 53
- Number
- 3
- Start Page
- 1698
- End Page
- 1701
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/122787
- DOI
- 10.3938/jkps.53.1698
- ISSN
- 0374-4884
- Abstract
- We show that for a transverse-electric (TE) mode, a specific frequency of incident light can be selected by using dielectric slab waveguides. The ray of light incident. upon the top of the waveguide travels inside the waveguide and interferes with light scattered at the boundary of the waveguide. A rigorous calculation reveals that, if the incident angle satisfies some conditions, the interference spectrally narrows the outgoing wave so that selection of a specific frequency is possible. We also show that. this frequency is tunable by changing both the refractive index and the thickness of the dielectric waveguide. To explore, the nature of the spectral narrowing, we studied the leaky waveguide mode and are used the finite difference time domain (FDTD) method to confirm our study.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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