Patent ID: 8483527
Filing Date: 2013-07-09
Classification: G02B,H01S

Abstract:
1. A device comprising: a laser source; and a continuous optical wave guide that collects a light signal emitted by the laser source by coupling, wherein the light signal is emitted by the laser source in at least two distinct zones, the wave guide comprises a part configured to transport the light signal output from the device and a part forming a loop that collects the light signal emitted by the laser source in at least two coupling zones by coupling, the loop being separated from the laser source at the coupling zones by a material with a low refraction index, the loop comprises a first segment prolonged by a second segment prolonged by a third segment, the second segment connecting the first coupling zone of the loop to the second coupling zone of this loop, the first and third segments, as junction segments, connect the second segment to the first and second inputs respectively of a two-to-one coupler, an output of which is connected to a fourth segment forming the part configured to transport the light signal output from the device, the second segment includes an optical path configured so that there is interference in each of the coupling zones, between a part of the light signal captured at one of the coupling zones and transported by the corresponding junction segment, and a part of the light signal captured at another coupling zone and transported by the second segment, and optical paths of the first and third segments are configured so that there is interference in the two-to-one coupler between signals transported by the junction segments.