Rainer Hainberger,1 Paul Muellner,1 Stefan Nevlacsil,1 Moritz Eggeling,1 Florian Vogelbacherhttps://orcid.org/0000-0003-3782-652X,1 Martin Sagmeister,2 Gerald Meinhardt,2 Karl Rohracher,2 Stefan Jessenig,2 Desiree Rist,2 Deborah Morecroft,2 Jochen Kraft,2 Nanko Verwaal,3 Leonhard Klein,3 Matthias Voelker,3 Moises Jezzini,4 Padraic Morrissey,4 Peter O'Brien,4 Stefan Gloor,5 Marcus Duelk,5 Stefan Richter,6 Michael Kempe,6 Elisabet Rankhttps://orcid.org/0000-0002-2268-5333,7 Wolfgang Drexler7
1AIT Austrian Institute of Technology GmbH (Austria) 2ams OSRAM AG (Austria) 3Fraunhofer-Institut für Integrierte Schaltungen IIS (Germany) 4Tyndall National Institute (Ireland) 5EXALOS AG (Switzerland) 6Carl Zeiss AG (Germany) 7Zentrum fur Medizinische Physik & Biomedizinische Technik, Medizinische Univ. Wien (Austria)
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Silicon nitride waveguide based photonic integrated circuits (PICs) are intensively investigated for a wide range of sensing applications in the visible to sub 1-µm near-infrared spectral region. The monolithic co-integration of silicon photodiodes and read-out electronics offers additional benefits in terms of performance and miniaturization. We discuss challenging aspects related to the efficient coupling and routing of light to, from, and within PICs and present interfacing photonic building blocks offering potential solutions. We demonstrate the suitability of these interfacing building blocks by using them for the realization of a PIC-based multi-channel optical coherence tomography concept at 840 nm.
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Rainer Hainberger, Paul Muellner, Stefan Nevlacsil, Moritz Eggeling, Florian Vogelbacher, Martin Sagmeister, Gerald Meinhardt, Karl Rohracher, Stefan Jessenig, Desiree Rist, Deborah Morecroft, Jochen Kraft, Nanko Verwaal, Leonhard Klein, Matthias Voelker, Moises Jezzini, Padraic Morrissey, Peter O'Brien, Stefan Gloor, Marcus Duelk, Stefan Richter, Michael Kempe, Elisabet Rank, Wolfgang Drexler, "Interfacing photonic building blocks for silicon nitride photonic-integrated circuit-based sensing devices," Proc. SPIE PC12007, Optical Interconnects XXII, PC120070K (5 March 2022); https://doi.org/10.1117/12.2606125