This paper reports the high efficient light coupling between stripe-geometry DH GaAlAs lasers and the multimode fibers by using etched-cladding tapered-spherical lenses at the ends of fibers. Mechanism of the high efficient coupling has been analysed theoretically and the lens has been designed. We have obtained a coupling efficiency of 90% experimentally. It is shown that the coupling efficiency of the etched-eladding tapered, spherical lens described here is the highest one. This result agrees with the theoretical analysis.