The pass-band characteristics of three-dimensional photonic band-gap (PBG) structure with line defect were investigated in this paper, which were fabricated with high-K TiO2 ceramic based on 3D printing technique and sintering process. The transmission characteristics were measured using transmission/reflection method and computed using FDTD method. Experimental results show that pass-band frequency of the waveguide between 13.5 and 14.7 GHz is within the band-gap of PGB structure (12.2–16.4 GHz) when the practical lattice constant of PBGs is 11.34 mm and practical aspect ratio is 0.296, and transmission efficiency is 80%, which increases by 60% than that of low-dielectric Al2O3 ceramic with transmission efficiency of 50%. Moreover, the computing results basically agree with the experimental results. These results indicate that waveguide of PBG structure with high-K materials will be able to obtain higher transmission efficiency, which will provide a method for adjusting transmission characteristics of PBG structure and promote PBG structure into the practical applications.
Optical and Quantum Electronics – Springer Journals
Published: Aug 10, 2017
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