Laser device having a looped cavity capable of being functionalized

摘要

The laser device includes an amplifier including a III-V heterostructure arranged to generate photons, and a waveguide which forms a loop and is optically coupled to the amplifier. The amplifier is arranged facing the waveguide only in the region of a first section of the waveguide.

主权项

1. A laser device comprising:
a silicon-based waveguide forming a loop, the silicon-based waveguide comprising a first section, arranged in a first plane, and a second section; a III-V heterostructure amplifier designed to generate photos and optically coupled to the silicon-based waveguide, the III-V heterostructure amplifier arranged in a second place and facing the silicon-based waveguide only in the region of the first section, the first and second planes being substantially parallel and offset from each other; a first mode transformer and a second mode transformer, each of the transformers formed in the silicon-based waveguide at a respective end of the first section so as to perform optic coupling between the silicon-based waveguide and the III-V heterostructure amplifier, the width of the first section being smaller, at least over a portion of the first section, than the width of the silicon-based waveguide on each side of the first section, the generated width contraction delineating the first and second mode transformers; and a functionalization system arranged in the second section of the silicon-based waveguide that is not covered by the III-V heterostructure amplifier.