thz_waveguides(完整版)
【正文】 z With Cu inner layer, a ~ cm1 at 1 THz Recent waveguides ? Ferroelectric hollow core allplastic Bragg fibers Skorobogatiy, Appl. Phys. Lett., 90, 113514, (2022) Recent waveguides ?Metal wire Wang, Nature, 432, (2022) Stainless steel wire with a diameter of 900 mm a cm1 However, coupling efficiency is (very) low Non polarization maintaning Recent waveguides ?Metal wire Cao, Opt. Exp., 13, 18 (2022) Cu wire with a diameter of 450 mm should have a = cm1 at 1 THz Theoretical explanation of Wang’s results: Azimutely Polarized Surface Plasmon (APSP) The polarization mismatch with the linearly polarized source leads to a very low coupling efficiency. Recent waveguides ?Metal wire Cao, Opt. Exp., 13, 18 (2022) Outside the metal, kair is very small, so the field decays very slowly in the radial direction and extends several 10 times R outside of the metal. Inside the metal, km is very large, leaving a field peration depth of less than 1 mm. Recent waveguides ?Metal wire with milled grooves Cao, Opt. Exp., 13, 18 (2022) Vain attempt to increase coupling Recent waveguide
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