Chalker Flores, LLP
Enhanced coupling strength grating having a cover layer
The present invention includes an optical waveguide with a grating and a method of making the same for increasing the effectiveness of the grating. In one example, the grating is at least partially covered by a liner layer disposed on at least a portion of a grating; and a cover layer disposed on the liner layer, wherein a first material selected for the core and ridges and a second material selected for the liner layer are selected to provide a difference in the index of refraction between the first and second material that is sufficient to provide a contrast therebetween.
Southern Methodist University
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Jerome K. Ruo-Hua Jay B. Jin Gary A. Guoliang Ashok V. Xuezhe
Butler He Kirk Yao Evans Li Krishnamoorthy Zheng