Experimental evidence of photonic crystal waveguides with wide bandwidth in two-dimensional Al2O3 rods array

Yong Wang; Dengguo Zhang; Shixiang Xu; Biaogang Xu; Zheng Dong; Tan Huang

doi:10.3788/COL201715.062301

Journals >Chinese Optics Letters >Volume 15 >Issue 6 >Page 062301 > Article

Chinese Optics Letters
Vol. 15, Issue 6, 062301 (2017)

Experimental evidence of photonic crystal waveguides with wide bandwidth in two-dimensional Al₂O₃ rods array

Yong Wang¹, Dengguo Zhang^2、*, Shixiang Xu², Biaogang Xu², Zheng Dong², and Tan Huang²

Author Affiliations

¹College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China

²College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China

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DOI: 10.3788/COL201715.062301 Cite this Article Set citation alerts

Yong Wang, Dengguo Zhang, Shixiang Xu, Biaogang Xu, Zheng Dong, Tan Huang. Experimental evidence of photonic crystal waveguides with wide bandwidth in two-dimensional Al₂O₃ rods array[J]. Chinese Optics Letters, 2017, 15(6): 062301 Copy Citation Text

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Abstract

A cross-shaped photonic crystal waveguide formed by a square lattice

{Al}_{2} O_{3}

rods array is numerically and experimentally investigated. The band gap of the TE mode for the photonic crystals and transmission characteristics of waveguides are calculated by the plane wave expansion method and the finite element method. We perform the experiments in the microwave regime to validate the numerical results. The measured reflection and transmission characteristics of the photonic crystals show a large band gap between 8.62 and 11.554 GHz (relative bandwidth is 29.34%). The electromagnetic waves are transmitted stably in the waveguides, and the transmission characteristics maintain a high level in the band gap.