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Fabrication of longitudinally arbitrary shaped fiber tapers

: Nold, J.; Plötner, M.; Böhme, S.; Sattler, B.; Vries, O. de; Schreiber, T.; Eberhardt, R.; Tünnermann, A.


Glebov, A.L. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Components and Packaging for Laser Systems IV : 30 January - 1 February 2018, San Francisco, California
Bellingham, WA: SPIE, 2018 (Proceedings of SPIE 10513)
ISBN: 978-1-5106-1511-3
ISBN: 978-1-5106-1512-0
Paper 105131N, 6 S.
Conference "Components and Packaging for Laser Systems" <4, 2018, San Francisco/Calif.>
Fraunhofer IOF ()

We present our current results on the fabrication of arbitrary shaped fiber tapers on our tapering rig using a CO2-laser as heat source. Single mode excitation of multimode fibers as well as changing the fiber geometry in an LPG-like fashion is presented. It is shown that this setup allows for reproducible fabrication of single-mode excitation tapers to extract the fundamental mode (M2 < 1.1) from a 30 μm core having an NA of 0.09.