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A new scheme of hyperboloid microlens (HM) having precise controlling minor radius of curvature is demonstrated. The HMs exhibited high-average coupling of 83% which was better than any other grinding techniques to form asymmetric microlenses.
A new scheme of hyperboloid microlens (HM) employing automatic grinding and precise fusing techniques to achieve high-average and high-yield coupling efficiency from high-power 980-nm lasers into single mode fibers is proposed and demonstrated. The fiber endface of the HM exhibited a double-variable curvature in the major and minor axes that was characterized as a hyperboloid. By selecting half transverse...
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