High mis-alignment tolerate co-package optics
AssigneeInternational Business Machines Corporation
InventorsNeng Liu, Hsianghan Hsu, Qianwen Chen, John Knickerbocker
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Abstract
A co-package optics structure is provided including a channel waveguide located in a glass substrate in which gradient period grating structures are located around the waveguide. Notably, the gradient period grating structures are located above, below and adjacent to each side of the waveguide. The waveguide and the gradient period grating structures are formed in the glass substrate using a laser which causes a change of the refractive index of the glass substrate in the areas in which laser exposure occurs.
Claims20
A co-package optics structure comprising:
- a waveguide located in, and traversing an entire length of, a glass substrate;
- and
- gradient period grating structures located in the glass substrate, wherein the gradient period grating structures traverse along a length of the waveguide and are located around the waveguide.
A method of forming structure comprising:
- forming, using a first laser scanning process, a first row of gradient period grating structures in a glass substrate;
- forming, using a continuous laser process, a waveguide in the glass substrate and above the first row of gradient period grating structures;
- and
- forming, using a second laser scanning process, a second row of gradient period grating structures in the glass substrate and above the waveguide.
Dependencies are inferred from the claim text.