Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Julien Favreau

Salim Boutami

Mickaël Brun

An optical coupler integrated on a substrate, that will optically couple a laser and a waveguide and including an external element, including two arms separated by a notch, this notch being delimited laterally by two first walls at a spacing that reduces towards the bottom of the notch; a central element, located in the notch delimited laterally by two second walls and with a first region in which the two second walls are in direct contact with two first walls as far as the bottom of the notch; and an intermediate element, extending between the external element and the central element. The optical index of the central element is greater than the optical index of the intermediate element, itself greater than the optical index of the arms of the external element. Such an optical coupler provides efficient coupling between a laser emitting in the mid-infrared and a waveguide integrated on a substrate.

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Seyssinet-Pariset, France

Julien Favreau