Patent ID: 8971371
Filing Date: 2015-03-03
Classification: H01S

Abstract:
1. A laser device comprising: a distributed feedback laser source including a first layer comprising a light emitting structure formed of group III-V materials or group II-VI materials; a guide structure operable to deliver light generated by the light emitting structure comprising at least a first portion and a second portion, the first portion includes a diffraction grating that forms a reflector of the laser source and cooperates with the light emitting structure, the second portion is a waveguide having a core surrounded by a cladding, said waveguide delivers light generated by the light emitting structure and propagated in the first portion, wherein the guide structure comprises a second layer in silicon, third and fourth layers realized in dielectric material made from silicon alloy and surrounding said silicon second layer, wherein said silicon second layer is structured to form the diffraction grating in the first portion and forms the core of the waveguide in the second portion, said diffraction grating and said core being aligned one to the other, and wherein the guide structure and the light emitting structure are stacked one on the other, the third layer being located between the first layer and the second layer.