Printed freeform lens arrays on multi-core fibers for highly efficient coupling in astrophotonic systems

• Verfasst von: Dietrich, Philipp-Immanuel [VerfasserIn]
• Verfasst von: Harris, Robert J. [VerfasserIn]
• Verfasst von: Quirrenbach, Andreas [VerfasserIn]
• Titel: Printed freeform lens arrays on multi-core fibers for highly efficient coupling in astrophotonic systems
• Verf.angabe: Philipp-Immanuel Dietrich, Robert J. Harris, Matthias Blaicher, Mark K. Corrigan, Tim J. Morris, Wolfgang Freude, Andreas Quirrenbach, and Christian Koos
• E-Jahr: 2017
• Jahr: 24 Jul 20
• Umfang: 8 S.
• Fussnoten: Gesehen am 14.11.2018
• Titel Quelle: Enthalten in: Optics express
• Ort Quelle: Washington, DC : Soc., 1997
• Jahr Quelle: 2017
• Band/Heft Quelle: 25(2017), 15, Seite 18288-18295
• ISSN Quelle: 1094-4087
• DOI: doi:10.1364/OE.25.018288
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1583720421

Abstract

Coupling of light into multi-core fibers (MCF) for spatially resolved spectroscopy is of great importance to astronomical instrumentation. To achieve high coupling efficiencies along with fill-fractions close to unity, micro-optical elements are required to concentrate the incoming light to the individual cores of the MCF. In this paper we demonstrate facet-attached lens arrays (LA) fabricated by two-photon polymerization. The LA provide close to 100% fillfraction along with efficiencies of up to 73% (down to 1.4 dB loss) for coupling of light from free space into an MCF core. We show the viability of the concept for astrophotonic applications by integrating an MCF-LA assembly in an adaptive-optics test bed and by assessing its performance as a tip/tilt sensor.