Photonic chip with integrated collimation structure
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorSylvie Menezo
Life of this patent
Estimating the term…
Abstract
Optical beam forming at the inputs/outputs of a photonic chip and to the spectral broadening of the light coupled to the chip. The photonic chip comprises an optical waveguide layer supported on a substrate. The chip includes an optical waveguide structure made of silicon and a coupling surface grating. The photonic chip has a front face on the side facing the coupling surface grating and a rear face on the side facing the substrate. A reflecting collimation structure is integrated in the rear face to modify the mode size of an incident light beam. The coupling surface grating is designed to receive light from the optical waveguide structure and to form a light beam directed to the reflecting collimation structure. The invention further relates to the method for producing such a chip.
Claims13
A photonic chip comprising a light guiding layer supported by a substrate, the light guiding layer including a light guiding structure optically coupled with a surface coupling array, the photonic chip having a front face on the side of the surface coupling array, a rear face on the side of the substrate and including a collimation structure integrated at the level of the rear face to increase a mode size of a light beam incident on said collimation structure from the surface coupling array,
- wherein the surface coupling array is configured to receive/transfer light from/to the light guiding structure and form/receive a light towards/from the collimation structure integrated at the level of the rear face, and
- wherein the collimation structure is a reflective structure capable of reflecting said light beam incident on said collimation structure from the surface coupling array at an angle away from the surface coupling array and towards the front face.
Dependencies are inferred from the claim text.