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Development of a monolithically integrated, CMOS-compatible SiN photonics process flow for sensor and medical applications

  • Abstract: ams AG is a leading provider of sensing solutions developing semiconductor sensors in a wide variety of fields, with optical sensing as one of the key competences. Since integrated photonics is a promising technology for new sensor systems, ams AG has been developing processes for fully integrated CMOS-compatible photonic components based on Si3N4. This talk will provide an overview on the processing of basic photonic building blocks and their optical properties and performance. We will also give examples for applications in the fields of optical coherence tomography and opto-chemical gas sensing. In the 1980s photonics started its way for common use in telecommunication technology, using optical fiber technologies. In recent years, also a variety of photonic sensors has been proposed and developed. One of the major drawbacks of most of these photonic devices has been the lack of integration into existing (semiconductor) production processes, so far. This integration is feasible using SiN material systems to process monolithically integrated CMOS-compatible photonic sensors in the visible and near-infrared spectrum. We will present the basic processing steps for the SiN photonic technology, the development of some critical processing steps such as SiN deposition and SiN etching as well as several photonic components (waveguides, splitters, etc.) with their optical properties. One of the applications presented relates to optical coherence tomography (OCT), a fast growing imaging technique in ophthalmology. Drawbacks of existing OCT systems are their high costs as well as their bulkiness, which prevents a wider spread use of OCT systems. One way to overcome both cost and size issues is to integrate optical and electrical components on a single chip. Part of this work was carried out in the framework of the projects COHESION (funded by the Austrian Research Promotion Agency (FFG), no. 848588), OCTCHIP (funded by the EU’ Horizon 2020 research and innovation programme, no. 688173), and COLODOR (M-ERA.NET transnational Call 2015, funded by the Austrian Research Promotion Agency (FFG), no.854066, and the Bundesministerium für Bildung und Forschung, Germany).

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Metadaten
Author:Martin Sagmeister, Stefan Jessenig, Paul Muellner, Stefan Nevlacsil, Alejandro Maese-Novo, Moritz Eggeling, Rainer Hainberger, Dana SeyringerORCiD, Wolfgang Drexler, Elisabet Rank, Jochen Kraft
Parent Title (German):Interphotonics 2019. Book of abstracts. 2nd International Conference on Photonics Research. November 4-9 2019. Antalya, Turkey
Editor:Ersin Kayahan, Ahmet Yavuz Oral, Mehmet Emre Aköz, Onur Alp Aksan, Ibrahim Cinar
Document Type:Conference Proceeding
Language:English
Year of publication:2019
Release Date:2020/01/15
Tag:CMOS-Compatible; Industry; OCT; Sensor; SiN Photonics
Organisationseinheit:Forschung / Forschungszentrum Mikrotechnik
DDC classes:600 Technik, Medizin, angewandte Wissenschaften
Publicationlist:Seyringer, Dana