Two-dimensional photonic crystal

Details Two-dimensional photonic crystal Two-dimensional photonic crystal

2005-03-04

2010-12-14

Kianni, K. Cyrus (Department: 2883)

Optical waveguides

Planar optical waveguide

C385S132000

Reexamination Certificate

active

07853111

ABSTRACT:
The present invention provides a two-dimensional photonic crystal in which an absolute photonic band gap (PBG), i.e. a photonic band gap that is effective for both the TE-polarized light and the TM-polarized light within a predetermined wavelength range, is created with an adequate bandwidth. The body21is provided with holes22arranged in a triangular lattice pattern, where the basic shape of the hole is an equilateral triangle. This shaping and arranging of the holes creates an absolute PBG. Each corner of the equilateral triangle is cut along an arc to leave an adequate distance between the neighboring holes (i.e. an adequate width of the connecting portion of the body). This design makes it possible to enlarge each hole22while ensuring an adequate strength of the two-dimensional photonic crystal. This construction creates an absolute PBG having a large width.

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Apr. 12, 2010 Communication Pursuant to Article 94(3) EPC issued in European Application No. 05 720 068.5.

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