OUTPUT LIGHT COUPLING SYSTEM FOR SEMICONDUCTOR LASER

摘要

PURPOSE:To efficiently couple the output light of a semiconductor laser and an optical fiber by matching the light distribution of the laser to the light distribution of the optical fiber or the light condensing lens. CONSTITUTION:The Y-axis direction light distribution in the active layer 2 of a semiconductor laser 1 placed on a substrate 8 is expanded by the curvature at the end of a fiber 6a, is matched to the light distribution of the propagation mode of a core 6b, and high efficiency coupling is performed. When suitably selecting the radius R of curvature of the end of the fiber 6a, the light distribution of the Y-axis direction of the laser 1 can be matched to that of the propagation mode of the fiber 6a.