Patent ID: 8238704

Claim:
A light coupler between an optical fiber and a waveguide, the light coupler comprising: a semiconductor-on-insulator substrate, the semiconductor-on-insulator substrate including a thin layer of semiconducting material in which the waveguide is disposed, the coupler being disposed on the semiconductor-on-insulator substrate; a light injector; a rib disposed on the light injector; and an adiabatic collector with an inverted nanotip including at least part of the thin layer of semiconducting material, wherein the light injector is disposed on the semiconductor-on-insulator and includes a face that receives an end of the optical fiber, the light injector covers the adiabatic collector, a width of the nanotip decreases from a second end which connects to the waveguide towards a first end that receives said end of the optical fiber, and a width of the rib decreases from the optical fiber towards the waveguide.