Taper Device for Tolerant Coupling of Free-Space Optical Beams Into Single-Mode Fiber Weinert, Carl M. ; Hiegemann, Stephan ; Perlot, Nicolas ; Rohde, Michael ; Hoh, Denny ; Unger, Sonja Abstract Publication: IEEE Photonics Technology Letters Pub Date: September 2014 DOI: 10.1109/LPT.2014.2337651 Bibcode: 2014IPTL...26.1843W