Patent 7907810 was granted and assigned to Lawrence Livermore National Security (company) on March, 2011 by the United States Patent and Trademark Office.
A waveguide includes a cladding region that has a refractive index that is substantially uniform and surrounds a wave-guiding region that has an average index that is close to the index of the cladding. The wave-guiding region also contains a thin ring or series of rings that have an index or indices that differ significantly from the index of the cladding. The ring or rings enable the structure to guide light.