Open AccessLight propagation tuned by periodic junction-prisms within well-faceted ZnO fibers
Author(s) -
Lisheng Huang,
Lin Peng,
Yi Shi,
Rong Zhang,
Gu B,
Youwei Du,
Yuanlin Zheng
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.005263
Subject(s) - materials science , optics , microscale chemistry , total internal reflection , optoelectronics , prism , optical fiber , wavelength , luminance , reflection (computer programming) , refraction , fiber , composite material , physics , mathematics , mathematics education , computer science , programming language
Well-faceted ZnO fibers with periodic junction-prisms were synthesized using conventional chemical vapor deposition. The characterization of the fibers by optical and fluorescence microscopy showed that the outer facets of the crystalline fibers provide excellent mirror-like surfaces for guiding light propagation along the fiber stem as well as the periodic junction-prisms. The structure-related optical properties can be fully explained by a microstructural model. The proposed model explains as the decrease in luminance at the junction-prisms is caused by refraction and total or partial reflection of light. The model also explains the luminance enhancement at the junction-prisms is related to waveguiding of the green emission of the ZnO fibers. Further integration of the ZnO junction-prisms into microdevices should provide the microscale modulation for light with different wavelengths, and could be potentially used for enhanced light-illumination arrays.