The coupling efficiency of the beam combination and the fiber-coupled module is limited due to the large vertical divergent angle of conventional semiconductor laser diodes.We present a high coupling efficiency module using photonic-band-crystal (PBC) laser diodes with narrow vertical divergent angles.Three PBC single-emitter laser diodes are combined into a fiber with core diameter of 105μm and numerical aperture of 0.22.A high coupling efficiency of 94.4％ is achieved and the brightness is calculated to be 1.7 MW/(cm2.sr) with the injection current of 8A.