The Fraunhofer Heinrich-Hertz-Institut (HHI) is working on the further development of passive optical networks (PON) in the PONTROSA project to promote fiber optic expansion and explore new applications for the technology. The institute, together with project partners, will develop new electronic and optical subsystems to significantly increase the transmission capacity of future PONs. The project, funded by the Federal Ministry of Education and Research with 3.8 million euros, will run for three years until September 2027.

Passive optical networks (PON) have become prevalent over active optical networks (AON) for their cost-effectiveness and simplicity. However, to meet future demands and new application areas, such as connecting data centers and distributed mobile stations, the achievable data rates need to be significantly expanded.

The project team will design, fabricate, and integrate optimized electronic and photonic integrated circuits into a complete system. The researchers will also analyze the requirements for digital signal processing and develop appropriate methods.

The Corromap project aims to close the knowledge gap in corrosion measurement for fuel cells. Corrosion limits the performance and lifespan of fuel cells crucial for the hydrogen economy. The research focuses on in situ corrosion measurements during the operation of the cells. Partners include the Fachhochschule Südwestfalen in Iserlohn and the Zentrum für Brennstoffzellentechnologie Duisburg (ZBT).

The project aims to introduce sensor technology into fuel cells to vary corrosion conditions under laboratory conditions. The ultimate goal is to prevent corrosion and performance losses in the necessary fuel cell technology.

Strategies include monitoring and controlling the operating conditions of fuel cells, optimizing materials and coatings, and developing cost-effective manufacturing processes.