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Modulating electromagnetic properties in three‐dimensional diamond‐structured photonic crystals with double planar defects
Author(s) -
Chen Shibin,
Zhao Xin,
Yao Yunshi,
Gao Yongchang,
Shi Xingtai
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32363
Subject(s) - planar , materials science , photonic crystal , diamond , optics , band gap , optoelectronics , reflection (computer programming) , lattice (music) , physics , composite material , acoustics , computer graphics (images) , computer science , programming language
Three‐dimensional (3D) diamond structure photonic crystals (PhCs) with planar defects were fabricated with alumina using 3D printing combining gel casting, sintering process, and vacuum freezing‐dry technique. In this article, the influences of twinned planar defect and the positions of planar defect in a single lattice period on the transmission properties of the electromagnetic wave (EM) in the PhCs is studied. The normalized resonant intensities are 0.5 for twinned planar defected photonic crystals (PhCs). When the planar defect position lies in the nonkey positions (key position is n *(a/4)), the band gap becomes narrow and the resonant peak disappears. When the twinned planar defected with different interval periods is integer, obvious resonant peaks can be found in the EM band gap of the planar defects PhCs with 2 and 3 symmetrical periods. When a PhC with two planar defects is constructed, its band gap width increases and the resonant peaks intensities decrease.