Patent ID: 7242837
Filing Date: 2007-07-10
Classification: B82Y,G02B

Abstract:
1. A photonic crystal guided propagation structure comprising: a guide portion Wn corresponding to a first configuration of rows of patterns where n is a positive real number or zero corresponding to a number of rows of neighboring patterns that are missing in the guide portion Wn; a guide portion Wm corresponding to a second configuration of rows of patterns where m is a positive real number greater than n corresponding to a number of rows of neighboring patterns that are missing in the guide portion Wm; and a transition zone of a predetermined distance located between guide portion Wn and guide portion Wm, in which patterns aligned with at least one row of patterns in the first configuration of rows of patterns decrease in size over the predetermined distance to allow progressive passing from the first configuration of rows of patterns to the second configuration of rows of patterns, wherein, the patterns are holes having a diameter of substantially 300 nm in the first and second guide portions, and a number of holes in the transition zone, which are aligned with a row of holes in the first guide portion and which decrease in size, is equal to two, said two holes having respective diameters of 200 nm and 100 nm.