Patent ID: 9547137
Date: 2017-01-17
CPC Classifications: G02B

Claim:
1. An optical coupler integrated on a substrate, designed to optically couple a laser and a waveguide, said optical coupler comprising: an external element, with a base having a position starting from which two arms extend separated by a notch, said notch being delimited laterally by two first walls of the respective arms and terminating at the position of the base, a distance from one wall to the other decreasing towards a bottom of the notch; a central element located in the notch, delimited laterally by two second walls, and with a first region in which said two second walls are in direct contact with said two first walls as far as the bottom of the notch, the central element not extending from the notch towards the base; and an intermediate element, extending between the external element and the central element, directly between a first wall and a second wall where a first wall is not in direct contact with a second wall; an optical index of the central element being greater than an optical index of the intermediate element, itself greater than an optical index of the base of the external element.