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3D Printed Hollow‐Core Terahertz Optical Waveguides with Hyperuniform Disordered Dielectric Reflectors
Author(s) -
Ma Tian,
Guerboukha Hichem,
Girard Martin,
Squires Andrew D.,
Lewis Roger A.,
Skorobogatiy Maksim
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201600171
Subject(s) - materials science , terahertz radiation , reflector (photography) , dielectric , optics , core (optical fiber) , optoelectronics , refractive index , photonics , light source , composite material , physics
Novel hollow‐core THz waveguides featuring hyperuniform disordered reflectors are proposed, fabricated, and characterized. The reflector comprises aperiodically positioned dielectric cylinders connected with dielectric bridges. The proposed waveguides are fabricated using a 3D MultiJet printer. Optical properties of the fabricated waveguides are investigated numerically using finite element method, as well as experimentally using terahertz time‐domain spectroscopy. The results confirm that proposed waveguides exhibit sizable photonic bandgaps (21%) even with relatively low refractive index contrast (resin/air). Position of the bandgaps can be easily tuned by varying reflector geometrical parameters.