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US 12,650,376 B2Granted
Waveguide with controlled mode confinement for analyte interaction and optical power delivery
AssigneeORCA Computing Limited
InventorsBrian Mattis, Taran Huffman
Life of this patent
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Abstract
A photonic circuit and electronic device incorporating the same including a waveguide defining different regions having different widths and cladding thicknesses. The width and cladding thickness in a particular region are configured to loosely confine light in a first set of conditions and to tightly/highly confine light in a second set of conditions. The first and second set of conditions can correspond to the waveguide being positioned proximate to different materials having different indices of refraction.
Claims15
A photonic circuit comprising:
- an insulator layer;
- a waveguide formed on the insulator layer to a selected thickness and defining a path from an input to an output, the waveguide defining:
- a first region having a first width selected for high confinement of light;
- and
- a second region having a second width less than the first width, the second width selected for:
- high confinement of light given a first condition;
- and
- loose confinement of light given a second condition;
- and
- a cladding layer formed over the waveguide, encapsulating the waveguide and disposed to a first thickness over the first region of the waveguide and a second thickness less than the first thickness over the second region of the waveguide,
- wherein:
- the cladding layer defines an interface surface configured to receive a first analyte and a second analyte;
- the first condition corresponds to the first analyte being positioned on the interface surface;
- and
- the second condition corresponds to the second analyte being positioned on the interface surface.
12 more elements
An electronic device comprising:
- a laser light source;
- a power source coupled to the laser light source;
- control electronics coupled to the power source and to the laser light source;
- and
- a photonic circuit comprising:
- a waveguide optically coupled to the laser light source, the waveguide defining:
- a first region having a first width selected for high confinement of light;
- and
- a second region having a second width less than the first width, the second width selected for:
- high confinement of light given a first condition;
- and
- loose confinement of light given a second condition;
- and
- a cladding layer formed over the waveguide, encapsulating the waveguide and disposed to a first thickness over the first region of the waveguide and a second thickness less than the first thickness over the second region of the waveguide, the cladding layer defining an interface surface above the second region of the waveguide,
- wherein:
- the first condition corresponds to a first material having a first index of refraction placed proximate to the interface surface;
- and
- the second condition corresponds to a second material having a second index of refraction placed proximate to the interface surface, the second index of refraction different from the first index of refraction.
15 more elements
Dependencies are inferred from the claim text.