Three-dimensional periodic structure, functional element...

Details Three-dimensional periodic structure, functional element... Three-dimensional periodic structure, functional element...

2006-08-01

2006-08-01

Pak, Sung (Department: 2874)

Optical waveguides

Planar optical waveguide

C385S014000, C385S130000, C385S131000

Reexamination Certificate

active

07085467

ABSTRACT:
A three-dimensional periodic structure exhibiting a complete photonic band gap in a wide wavelength range and being readily produced, as well as a functional element including the same, is provided. In the three-dimensional periodic structure exhibiting a photonic band gap according to the present invention, layers composed of a plurality of square columns spaced apart by a predetermined interval are stacked sequentially with additional layers therebetween, rectangular parallelepipeds contained in the additional layers are disposed at the positions corresponding to the intersections of the square columns, and 1.21≦W1/W≦2.39 and W/W1<W2/W are satisfied, where W1and W2represent lengths of sides of the rectangular parallelepiped and W represents the width of the square column, each in a plane parallel to the layer containing the square columns.

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Feigel A , et al., “Overlapped Woodpile Photonic Crystals”, Applied Optics, Optical Society of America, Washington, US vol. 43 No. 4 , pp. 793-795, Feb. 1, 2004.

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