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公开(公告)号：US20220057581A1
公开(公告)日：2022-02-24
申请号：US17404173
申请日：2021-08-17
Applicant: IMEC vzw
Inventor： Charles Caer , Sarvagya Paavan DWIVEDI
Abstract: An optical device including a waveguide grating is disclosed. The optical device may be used as an optical cavity for a laser device, for instance, of an integrated laser device for light detection and ranging (Lidar) applications. In one aspect, the optical device includes a waveguide grating for guiding light, a heating layer provided beneath or above the waveguide grating, and two or more contacts for passing a current through the heating layer, to generate heat in the heating layer. The heating layer is thermally coupled to the waveguide grating and is optically decoupled from the waveguide grating.
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