The development of low loss, small size and flexible waveguides is one of the most challenging issues of THz research due to the poor characteristics of both metal and dielectrics in this frequency range. Hollow core tube lattice fibers (HC-TLFs) have been recently proposed and experimentally demonstrated to overcome this problem. However, they require very large hollow core size leading to big and hardly flexible fibers. Scaling law analysis plays an important role in determining the best trade-off between low loss and small fiber diameter. The dependence of the confinement on frequency and core radius are here numerically investigated. Results show that confinement loss exhibits a stronger dependence on core size and frequency with respect to other hollow core fibers proposed for THz waveguiding, such as Bragg, Tube, and Kagome fibers.

Confinement loss scaling law analysis in tube lattice fibers for terahertz applications / Masruri, M.; Vincetti, Luca; Molardi, C.; Coscelli, E.; Cucinotta, A.; Selleri, S.. - ELETTRONICO. - 8985(2014), p. 89850F. ((Intervento presentato al convegno SPIE - Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VII tenutosi a San Francisco, CA; United States nel 4-6 February 2014.

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