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Proceedings Paper

Effective medium based on two-dimensional photonic crystals for index-confinement waveguide application
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Paper Abstract

In this paper, the design of effective microprism based on the subwavelength periodic lattices is proposed. The microprism is realized by using a two-dimensional photonic crystal (PhC) structure with a periodic lattice of air-holes. In order to behave as a homogeneous and isotropic microprism, the PhC structure with a hexagonal lattice should be operated in the low frequency. By monolithically integrating the effective microprism in the bending area of an optical waveguide, its wavefront of eigenmode could be tilted correctly to suppress the radiation loss in wide-angle bent waveguides. In order to demonstrate the feasibility of proposed microprism for low-index-contrast waveguides, an example of bent waveguide with the eigenmode nearly compatible to the single mode fiber is adopted to design the PhC microprism. The transmission efficiency as high as 92% for the proposed structure with the bending angle of 12.96° and the bending radius of 89.09 μm is achieved.

Paper Details

Date Published: 9 February 2007
PDF: 8 pages
Proc. SPIE 6477, Silicon Photonics II, 64770H (9 February 2007); doi: 10.1117/12.700040
Show Author Affiliations
Mount-Learn Wu, National Central Univ. (Taiwan)
Hsiao-Chin Lan, National Central Univ. (Taiwan)
Ya-Lun Tsai, National Central Univ. (Taiwan)
Che-Lung Hsu, National Central Univ. (Taiwan)
Jenq-Yang Chang, National Central Univ. (Taiwan)

Published in SPIE Proceedings Vol. 6477:
Silicon Photonics II
Joel A. Kubby; Graham T. Reed, Editor(s)

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