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3D-printed facet-attached optical elements for connecting VCSEL and photodiodes to fiber arrays and multi-core fibers

Maier, Pascal ORCID iD icon 1,2; Xu, Yilin ORCID iD icon 1,2; Trappen, Mareike 1,2; Lauermann, Matthias; Henniger-Ludwig, Alexandra; Kapim, Hermann; Kind, Torben; Dietrich, Philipp-Immanuel 1,2; Weber, Achim; Blaicher, Matthias 1,2; Wurster, Clemens; Randel, Sebastian 1; Freude, Wolfgang 1; Koos, Christian 1,2
1 Institut für Photonik und Quantenelektronik (IPQ), Karlsruher Institut für Technologie (KIT)
2 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Multicore optical fibers and ribbons based on fiber arrays allow for massively parallel transmission of signals via spatially separated channels, thereby offering attractive bandwidth scaling with linearly increasing technical effort. However, low-loss coupling of light between fiber arrays or multicore fibers and standard linear arrays of vertical-cavity surface-emitting lasers (VCSEL) or photodiodes (PD) still represents a challenge. In this paper, we demonstrate that 3D-printed facet-attached microlenses (FaML) offer an attractive path for connecting multimode fiber arrays as well as individual cores of multimode multicore fibers to standard arrays of VCSEL or PD. The freeform coupling elements are printed in situ with high precision on the device and fiber facets by high-resolution multi-photon lithography. We demonstrate coupling losses down to 0.35 dB along with lateral 1 dB alignment tolerances in excess of 10 μm, allowing to leverage fast passive assembly techniques that rely on industry-standard machine vision. To the best of our knowledge, our experiments represent the first demonstration of a coupling interface that connects individual cores of a multicore fiber to VCSEL or PD arranged in a standard linear array without the need for additional fiber-based or waveguide-based fan-out structures. ... mehr


Postprint §
DOI: 10.5445/IR/1000153694
Veröffentlicht am 03.01.2023
Originalveröffentlichung
DOI: 10.1364/OE.470676
Scopus
Zitationen: 6
Web of Science
Zitationen: 2
Dimensions
Zitationen: 8
Cover der Publikation
Zugehörige Institution(en) am KIT 3D Matter Made to Order (3DMM2O)
Institut für Mikrostrukturtechnik (IMT)
Institut für Photonik und Quantenelektronik (IPQ)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 19.12.2022
Sprache Englisch
Identifikator ISSN: 1094-4087
KITopen-ID: 1000153694
HGF-Programm 43.32.03 (POF IV, LK 01) Designed Optical Devices & Systems
Erschienen in Optics Express
Verlag Optica Publishing Group (OSA)
Band 30
Heft 26
Seiten 46602-46625
Vorab online veröffentlicht am 07.12.2022
Nachgewiesen in Web of Science
Dimensions
Scopus
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