US 2019/0196196 A1Published application

Wavelength combiner photonic integrated circuit with grating coupling of lasers

AssigneeNorth Inc.

InventorsJörg Pierer, Rony Jose James, Stefan Mohrdiek, Douglas R. Dykaar, Martin Joseph Kiik, Syed Moez Haque

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Abstract

Systems, devices, and methods of manufacturing optical engines and laser projectors that are well-suited for use in wearable heads-up displays (WHUDs) are described. Generally, the optical engines of the present disclosure integrate a plurality of laser diodes (e.g., 3 laser diodes, 4 laser diodes) within a single, hermetically or partially hermetically sealed, encapsulated package. Photonic integrated circuits having grating couplers thereon may be used to wavelength multiplex beams of light emitted by the plurality of laser diodes into a coaxially superimposed aggregate beam. Such optical engines may have various advantages over existing designs including, for example, smaller volumes, better manufacturability, faster modulation speed, etc. WHUDs that employ such optical engines and laser projectors are also described.

Claims24

Dependent claims

A method of manufacturing an optical engine, the method comprising:

bonding a plurality of laser diodes directly or indirectly to a base substrate;
bonding a cap to the base substrate, the cap comprising at least one wall that, with the base substrate, defines an interior volume sized and dimensioned to receive at least the plurality of laser diodes, the cap being bonded to the base substrate to provide a hermetic or partially hermetic seal between the interior volume of the cap and a volume exterior to the cap;
and
bonding a photonic integrated circuit comprising a plurality of input facets and at least one output facet to the cap, in operation, each input facet of the photonic integrated circuit receives a respective beam of light of a plurality of beams of light, and the photonic integrated circuit wavelength multiplexes the plurality of beams of light to provide an aggregated beam of light at the output facet.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 16/216,939Filed 11 Dec 2018
Priority: 11 Dec 2017
Published: 27 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification45 codes

G02B 27/141
Operating by reflection only: using dichroic mirrors
G02B 6/12004
Of the integrated circuit kind: combinations of two or more optical elements
G02B 6/124
Basic optical elements, e.g. light-guiding paths: geodesic lenses or integrated gratings
G02B 6/13
Of the integrated circuit kind: integrated optical circuits characterised by the manufacturing method

Family

Application62/597,294Us provisional application · filed 11 Dec 2017
Application62/608,749Us provisional application · filed 21 Dec 2017
Application62/609,870Us provisional application · filed 22 Dec 2017
Application62/620,600Us provisional application · filed 23 Jan 2018
Application62/760,835Us provisional application · filed 13 Nov 2018
US 2019/0196196 A1This patent

From the US filing history. Foreign family members aren’t listed.