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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 5 — Mar. 7, 2005
  • pp: 1486–1497

Photonic crystal structures in titanium dioxide (TiO2) and their optimal design

X. Wang, M. Fujimaki, and K. Awazu  »View Author Affiliations


Optics Express, Vol. 13, Issue 5, pp. 1486-1497 (2005)
http://dx.doi.org/10.1364/OPEX.13.001486


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Abstract

We propose photonic crystal (PhC) structures in titanium dioxide (TiO2) material which is suitable for micro-nano structure optical device engineering and is a good candidate for visible light application. To provide a guideline for designing TiO2 based PhC, the comprehensive optical band gap maps of both the two-dimensional and three-dimensional structures are computed using the planewave expansion method. For 2D structures, besides the ideal infinite high 2D PhC and conventional air-bridge type slab, we also propose a “sandwich-type” PhC for better robustness and easier fabrication. The optimal thicknesses of both types of PhC slabs are investigated. In 3D PhC, we calculate the Yablonovite structure and its reverse which are made possible recently in our fabrication. For the first time to our knowledge, the computation results indicate that the reversed Yablonovite structure also shows a complete band gap characteristic, although it is smaller compared to that of the normal Yablonovite. The dependence of band gap width on the filling ratio and drilling angles for both types of Yablonovite structures are investigated.

© 2005 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(130.3130) Integrated optics : Integrated optics materials
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.4610) Optical design and fabrication : Optical fabrication
(220.4830) Optical design and fabrication : Systems design
(230.4000) Optical devices : Microstructure fabrication

ToC Category:
Research Papers

History
Original Manuscript: December 16, 2004
Revised Manuscript: February 9, 2005
Published: March 7, 2005

Citation
X. Wang, M. Fujimaki, and K. Awazu, "Photonic crystal structures in titanium dioxide (TiO2) and their optimal design," Opt. Express 13, 1486-1497 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-5-1486


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