integration | © Fraunhofer HHI
Fraunhofer Heinrich-Hertz-Institut (HHI) is expanding services in the field of hybrid photonic integration: In addition to single-mode waveguides, the Hybrid PICs Group now also offers multi-mode polymer waveguides. With this expansion, the institute upgrades possibilities for custom photonic systems and creates new opportunities for applications in communications, sensor technology, medical technology, and other future-oriented fields.
Hybrid Integration as a Flexible Technology Platform
The Hybrid PICs Group at Fraunhofer HHI develops photonic components and hybrid integrated circuits based on PolyBoard, SiN, and thin-film lithium niobate (TFLN) with active elements made of InP, GaAs, or GaN. In hybrid integration, different material platforms and components are combined within a single system to optimally leverage their respective strengths. This allows passive waveguides to be combined with active components. As a result, application-specific photonic solutions, rapid prototyping, and short iteration cycles are enabled.
Wide Range of Applications
The Hybrid PICs Group’s technologies address applications in fiber-based communications, quantum technologies, microwave photonics, as well as 6G and other future wireless networks. Hybrid integration also offers great potential for various customized applications in the life sciences, medical technology, sensor technology, and analytics.
waveguides from VIS to NIR | © Fraunhofer HHI
New to the Portfolio: Multi-Mode Waveguides
To complement single-mode waveguides, the Hybrid PICs Group now also offers multi-mode waveguides for photonic integrated circuits. This opens additional possibilities, e.g. for coupling higher optical power, achieving greater coupling tolerances, or applications requiring specific beam profiles.
The multi-mode waveguides are fabricated with waveguide cross-sections of up to 500 µm × 500 µm and typically have a numerical aperture of 0.5. In addition, custom designs are possible, allowing the waveguides to be specifically tailored to the requirements of the respective application.
New Opportunities for Research and Industry
Multi-mode waveguides open new possibilities for demanding applications, including in sensor technology, biophotonic systems, medical technology, and analytics. The development is spearheaded by Crispin Zawadzki and the head of the Hybrid PICs Group, Moritz Kleinert. With this expanded service offering, Fraunhofer HHI is strengthening its position as a partner for customized hybrid integration — now also with multi-mode waveguides.
Further Information
Find more information about the Hybrid PICs Group's technologies and solutions here: Hybrid PICs - Best of All Worlds.