PHOTONIC CRYSTAL STRUCTURE FOR MODE CONVERSION

摘要

The invention concerns a photonic crystal structure for guided propagation, said structure comprising: a guide portion Wn, n being a positive or null real number, having a first configuration of pattern rows (4); a guide portion Wm, m being a real number, m > n, having a second configuration of pattern rows, and a transition zone of extent D located between the guide portion Wn and the guide portion Wm, wherein the patterns aligned (t1, t2) with at least a row of patterns of the first configuration decrease in size over the extent D to enable the gradual shift from the first configuration of pattern rows to the second configuration of pattern rows. The invention is applicable in the field of integrated optics (semiconductor lasers, modulating lasers, filters, multiplexers and the like).