Patent ID: 8977086
Filing Date: 2015-03-10
Classification: G01J,G02B

Abstract:
1. A tapered leaky waveguide, comprising: a first waveguiding layer and a second waveguiding layer having a core between the first waveguiding layer and the second waveguiding layer, each of the first waveguiding layer and the second waveguiding layer comprising an omni-directional reflector for light propagating in at least one leaky mode within the core; the core having a diminishing thickness in a first direction and having a selected thickness at a position at which light propagating in the tapered leaky waveguide forms a transverse resonant mode corresponding to a mode cutoff of a desired wavelength of light propagating within the core; and a light collection element disposed to receive light that, in operation of the tapered leaky waveguide, propagates perpendicular to the core at the position of the selected thickness.