Single Photon Detection for Quantum Communication and Sensing

Fraunhofer HHI provides photodetector modules for single photon detection, operating from the O- to the L-band. Next to the SPAD modules, Fraunhofer HHI also provides SPAD arrays for sensing and imaging. The SPAD supply chain is completely within EU, including packaging at the Fraunhofer HHI facility.

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High speed EML for datacom

Fraunhofer HHI offers high-speed differential EMLs for datacom and telecom applications. In comparison to conventional single-ended EMLs, the differential EMLs optimize the use of differential drivers to achieve greater modulation swing, lower power consumption due to reduced voltage requirements, and improved signal integrity with minimal crosstalk. The differential EML chips are based on mature InP technology and are fabricated in the wafer process line of Fraunhofer HHI, with Telcordia and space-qualified processes.

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Mode-Locked and External-Cavity Lasers

Fraunhofer HHI’s SiN wafer line enables for the hybrid integration of SiN PICs with active InP components for mode-locked lasers with a tailored repetition rate and external cavity tunable lasers operating at NIR wavelengths.

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Fraunhofer offers a fully integrated 100 GHz bandwidth coherent receiver frontend with optical extender heads for the O-band.

To cope with the continuously growing demand for bandwidth over multiple wavelength bands in telecom and datacom applications, Fraunhofer HHI researchers developed a Coherent Receiver Frontend (CRF), offering 70 GHz bandwidth detection with polarization- and phase-diversity on the O-band. Its unique features are optical extender heads enabling high signal integrity, robust testing & measurement performance and convenient handling & operation for our customers.

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Fraunhofer and ID Photonics offers a fully integrated Coherent Optical Reference Receiver with up to 60 GHz.

The latest test & measurement equipment launched by Fraunhofer HHI and ID Photonics is the fully integrated Coherent Optical Reference Receiver. It comprises a high-bandwidth coherent receiver with transimpedance amplifiers to convert optical data signals with various modulation formats (e.g. QPSK and m-QAM) into electrical RF baseband signals with an o/e bandwidth up to 60 GHz. Its unique features are a high fidelity tuneable C-band laser source and a fully integrated Coherent Optical Receiver, allowing operation at symbol rates beyond 120 GBaud, enabling transmission capacities in the Terabit/s single carrier regime.

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Optical Wireless Communication for 6G Backhaul

Building on our established LED-based point-to-point links we present the next generation of optical wireless technology: LiFi 2.0.
Based on high-power VCSEL-array transmitters and low-noise APD-array receivers, we demonstrate a live system capable of 5 Gbps. Combining imaging optics and a DSP solution based on IEEE 802.13.15 we reach field of views of 60° without diminishing the data-rate.

Simple alignment during installation and rate-adaptivity during operation enable optical front- and backhauling with a reliability of 99.99% for future mobile communication systems and offers mobile operators new flexibility in developing their networks – as a capacity upgrade for existing wireless links, to improve resilience against adverse weather conditions or as a standalone solution for rapid or economical network development.

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NOBS is a multi-purpose monitoring and analytics platform that enables collecting telemetry data in a secure way and exposing it to potential consumers through data-sovereign APIs. At OFC, we demonstrate three novel features and use cases realized by NOBS: 1) Conversational AI Assistant for Unified Network Operations and Observability, 2) Multi-Entity Carrier-Customer Network Management using YANG Models extended with Ownership Semantics, and 3) Optical Testbed Data Space for Data Sharing Across Vendor and Organizational Boundaries.

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