Patent ID: 9711940
Date: 2017-07-18
CPC Classifications: H01S

Claim:
1. A laser device comprising: a laser source; a waveguide of determined refractive index; and a coupling device, wherein the waveguide is coupled to the laser source by the coupling device, wherein the waveguide is single-mode and includes at least four reflectors in the form of trenches etched into the waveguide and irregularly distributed along the waveguide, a distance d separating each pair of neighbouring reflectors defined by the at least four reflectors being 1 μm<d<L−3 μm, L being a length of the waveguide, and wherein the at least four reflectors are positioned over a length of the waveguide that is greater than a length of the laser source, and wherein a degree of power reflection of each reflector is between 0.001% and 1%.