Abstract
A straightforward method for manufacturing concave fiber ends with optical quality surfaces is presented. This method allows for the indention of bare cleaved fiber ends of single-mode Bi2O3 fibers by way of conventional heating and subsequent contact with ultra-smooth sinter metal spheres. The resulting high quality surfaces show promise for microcavity experiments. Results for a simple plano-concave cavity composed of a single indented fiber and a plane mirror are presented.
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