期刊
OPTICS LETTERS
卷 34, 期 21, 页码 3457-3459出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.34.003457
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- National Science Council of Taiwan (NSCT) [97-2221-E002-043-MY2, 97-2221-E-002-047-MY3, 96-2628-E043-MY3, 97-2120-M-002-010]
- National Taiwan University [97R0062-07]
- Ministry of Education of Taiwan
We propose and demonstrate a simple leaky structure for terahertz (THz) waveguiding. Different from previously reported air-core THz waveguides, in which a high-reflection-coated cladding layer is designed, the proposed structure here is a simple pipe with a large air core and a thin dielectric layer with uniform but low index. Using commercially available Teflon air pipes, we experimentally confirm that THz waves can be successfully guided in the central air core of 3-m-long pipes with excellent mode qualities, high coupling efficiencies, low attenuation constants, and controllable passband width. (C) 2009 Optical Society of America
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