Experimental Test and Measurement Environments

On-Chip Measurements in High-Speed System Environments

RF-contacting and fiber coupling of research stage devices for system tests

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Testbed for Free-Space Optics

Optical links over the free-space channel require terminals that are robust, cost-effective and superior to microwave systems in terms of data rate. High data rates (> 1 Gb/s) can be achieved using commercial off-the-shelf components from the fiber telecommunication industry.

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Testbed for Optical Signal Processing

Our testbed allows the experimental set up of complex optical subcomponents and their study as part of state-of-the art and beyond optical telecommunication systems.

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Testbed for Core Systems

The development of new optical long-haul systems is the key for increasing the capacity of the future internet backbone infrastructure. Primary design goals are the higher flexibility of the systems on the one hand and also the increase of their spectral efficiency on the other.

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Testbed for System Level Characterization

In order to fully evaluate the performance of optical and electrical subcomponents for optical transmission systems, they need to be tested in a real system environment. Fraunhofer HHI offers well-equipped, system laboratories to perform such tests, providing state-of-the-art and beyond WDM transmission system infrastructure to generate and receive various modulation formats (BPSK, QPSK, M-QAM, 4D-formats, …) at high symbol rates up to 100 Gbaud.

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Testbed for OTDM Systems

High-speed data transmission systems and related signal processing and monitoring technologies for data rates above 100 Gbit/s up to several Tb/s are important building blocks for future generation optical networks. A flexible technology to generate such high data rates is Time Division Multiplexing (TDM). As current electronics is limited in speed, Optical Time Division Multiplexing (OTDM) is used to overcome this limitation in the laboratory, taking advantage of short pulse generation in the optical domain.

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