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Proceedings Paper

Design and application of photonic devices based on photonic crystal near Dirac point
Author(s): Guoyan Dong
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Paper Abstract

Different from conventional metamaterials comprising metallic composites with strong resonance loss at higher frequencies, photonic crystals are entirely made of dielectric with evident benefit of low loss. By proper design, photonic crystals can be regarded as zero-index medium (ZIM) at Dirac point in the center of Brillouin zone. The Dirac point can be identified precisely by analyzing transmission spectrum of finite photonic crystal array. The characteristics of effective zero-index can be applied to design some special photonic functional devices, such as filter, splitter and interferometry, etc. A subwavelength scale optical measurement mechanism has been proposed based on standing wave resonance at the Dirac frequency. The field-intensity can be detected to indicate displacement information with more precise measurement accuracy than the non-ambiguity range of half-wavelength of classical wavelength-based interferometry. The proposed design strategy of measuring device could be directly scaled in dimensions to work at different frequency bands without the need for reconfiguration. Its compact design and precise measurement effect may have significant technological potential in future electronic-photonic integrated circuits.

Paper Details

Date Published: 25 October 2018
PDF: 5 pages
Proc. SPIE 10823, Nanophotonics and Micro/Nano Optics IV, 108230R (25 October 2018); doi: 10.1117/12.2327082
Show Author Affiliations
Guoyan Dong, Univ. of Chinese Academy of Sciences (China)

Published in SPIE Proceedings Vol. 10823:
Nanophotonics and Micro/Nano Optics IV
Zhiping Zhou; Kazumi Wada, Editor(s)

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