A composite evanescent waveguide can include a first structured dielectric layer and a second dielectric material oriented adjacent one another to form a wave propagation interface between the first structured dielectric layer and second dielectric material. Each of the first structured dielectric layer...http://www.google.es/patents/US7406222?utm_source=gb-gplus-sharePatente US7406222 - Composite evanescent waveguides and associated methods
Composite evanescent waveguides and associated methods