14 February 2008 Designs of porous polymer THz fibers
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Abstract
We propose various designs of porous polymer fibers for guiding terahertz radiation. Numerical simulations are presented for three fiber geometries: a Bragg fiber consisting of periodic multilayers of ferroelectric polyvinylidene fluoride (PVDF) and polycarbonate (PC), a sub-wavelength waveguide containing multiple sub-wavelength holes, as well as a cobweb-like porous Bragg fiber consisting of solid film layers suspended by a network of bridges. Various properties of these fibers are presented. Emphasis is put on the optimization of the geometries to increase the fraction of power guided in the air, thereby alleviating the effects of material absorption. Losses of about 10 dB/m, 7.8 dB/m, and 1.7 dB/m at 1 THz are respectively predicted for these three structures.
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Alexandre Dupuis, Alexandre Dupuis, Alireza Hassani, Alireza Hassani, Maksim Skorobogatiy, Maksim Skorobogatiy, } "Designs of porous polymer THz fibers", Proc. SPIE 6892, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII, 68921G (14 February 2008); doi: 10.1117/12.762332; https://doi.org/10.1117/12.762332
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