Patent ID: 7496262
Filing Date: 2009-02-24
Classification: G02B,G02F

Abstract:
1. A strip loaded waveguide apparatus, comprising: a substrate; a first layer of waveguiding material above the substrate, the first layer having a first index of refraction, a first horizontal dimension, and a first vertical dimension; and a second layer of waveguiding material adjacent the first layer, the second layer having a second index of refraction, a second horizontal dimension, and a second vertical dimension, wherein the first index of refraction, the first horizontal dimension, the first vertical dimension, the second index of refraction, the second horizontal dimension, the second vertical dimension and the arrangement of the first and second layer are arranged to perform an optical mode transformation of light input into the apparatus, wherein the second vertical dimension is smaller than the first vertical dimension, the second horizontal dimension is smaller than the first horizontal dimension, and the second index of refraction is larger than the first index of refraction.