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US 12,366,636 B2Granted
Techniques for increasing efficiency of a waveguide of a LIDAR system
AssigneeAeva, Inc.
InventorsMazin Alalusi, Pradeep Srinivasan, Kevin Masuda
Life of this patent
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Abstract
A light detection and ranging apparatus (LIDAR) includes at least one waveguide including a first cladding layer having a first refractive index and a second cladding layer having multiple second refractive indexes to expand an optical mode of an optical beam propagating within the waveguide. The second refractive indexes include a gradient of refractive indexes and the first refractive index is less than the second refractive indexes.
Claims20
A light detection and ranging (LIDAR) apparatus, comprising:
- at least one waveguide comprising:
- a first cladding layer comprising a first refractive index;
- and
- a second cladding layer on which the first cladding layer is disposed, the second cladding layer comprising a plurality of second refractive indexes to expand an optical mode of an optical beam propagating within the at least one waveguide, the plurality of second refractive indexes comprising a gradient of refractive indexes, and wherein the first refractive index is less than the plurality of second refractive indexes.
1 more element
A method comprising:
- receiving, by a waveguide, an optical beam from an optical source of a light detection and ranging (LIDAR) system, the waveguide comprising a first cladding layer comprising a first refractive index and a second cladding layer on which the first cladding layer is disposed, the second cladding layer comprising a plurality of second refractive indexes to expand an optical mode of the optical beam propagating within the waveguide, the plurality of second refractive indexes comprising a gradient of refractive indexes, and wherein the first refractive index is less than the plurality of second refractive indexes;
- and
- propagating the optical beam using the gradient of the refractive indexes of the waveguide to expand the optical mode of the optical beam.
A light detection and ranging (LIDAR) system, comprising:
- at least one waveguide comprising:
- a first cladding layer comprising a first refractive index;
- and
- a second cladding layer on which the first cladding layer is disposed, the second cladding layer comprising a plurality of second refractive indexes to expand an optical mode of an optical beam propagating within the at least one waveguide, the plurality of second refractive indexes comprising a gradient of refractive indexes, and wherein the first refractive index is less than the plurality of second refractive indexes.
1 more element
Dependencies are inferred from the claim text.