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Opt Lett. 2009 Jul 15;34(14):2231-3. doi: 10.1364/OL.34.002231.

Transmission characteristics of terahertz hollow fiber with an absorptive dielectric inner-coating film.

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School of Information Science and Engineering, Fudan University, Shanghai, China.


We report calculation results for the transmission characteristics of terahertz hollow fibers with inner coatings of absorptive dielectric and metal layers. The absorption property of the dielectric film has an obvious influence on the transmission property of terahertz hollow fiber, because the optimum thickness of the dielectric layer is several tens of micrometers. Calculations were conducted on the loss properties of the hollow fiber with and without the absorptive dielectric layer. Important results were obtained, such as the optimum refractive index for the absorptive dielectric layer and the absorption tolerances for hollow fibers with various inner diameters.

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