OPTICAL MULTIPLEXING CIRCUIT AND LASER BEAM CONDENSING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a laser beam condensing apparatus in which the attenuation of light amount is reduced and the quality of the light beam is improved. SOLUTION: The laser beam condensing apparatus comprises: a semiconductor laser bar 10; an optical multiplexing circuit 12 provided with a plurality of optical waveguides 12B in which respective light incident parts are arranged along a side of a substrate 12A and respective light emission parts are so formed on the substrate to be laminated in the thickness direction of the substrate and respective optical waveguides are composed of a single optical waveguide having no branch; and an optical fiber 14 which is optically connected to the light emission part so formed to be laminated in the thickness direction of the optical multiplexing circuit. COPYRIGHT: (C)2007,JPO&INPIT