Patent ID: 8355614
Filing Date: 2013-01-15
Classification: B82Y,G02B

Abstract:
1. An optical waveguide comprising: a first dielectric medium; line-defect rods arranged in one row in said first dielectric medium; and rows of non-line-defect rods arranged along the row of the line-defect rods on both sides of the row of the line-defect rods; wherein: a two-dimensional lattice is formed by said line-defect rods and said non-line-defect rods; of the rows of said non-line-defect rods arranged on both sides of the row of the line-defect rods, the number of rows of said non-line-defect rods on at least one side is at least one but no more than five; a second dielectric medium is provided beyond the rows of said non-line-defect rods that are arranged on both sides of the row of the line-defect rods; the spacing between said second dielectric medium and said non-line-defect rods in greatest adjacency to said second dielectric medium is not greater than twice the spacing between the row of said line-defect rods and the row of said non-line-defect rods that is nearest to the row of said line-defect rods; and the refractive index of said second dielectric medium is equal to or greater than the refractive index of said first dielectric medium.