Coherent Terabit Communication & Instrumentation

Coherent Optical Transport

Optical fiber communication networks provide the required capacity and reliability for today's high-bandwidth internet applications and services. Coherent optical techniques allow to modulate amplitude, phase and polarization of the light for data transport resulting in unprecedented per-channel data rates spectral efficiency, flexibility and robustness, coherent optical transport is a widespread technique for longhaul transmission. Currently, it is also migrating to data center interconnect, access and short reach scenarios.

Facts

  • High-bandwidth dual-polarization I/Q transmitters (OMFT, 40 GHz)
  • High-bandwidth polarization-diverse coherent receivers (CRF, 25/40/70 GHz)
  • Optical loop control (OSLC) for emulation of metro and longhaul transmission
  • Extensive library of lab-proven DSP algorithms available as VPItoolkitTM DSP Library

 

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Rapid real-time prototyping

Digital signal processing (DSP) has become an ubiquitous toll in coherent communication systems, vastly increasing data rates, flexibility and robustness. Real-time DSP processing of tens and hundreds of Gb/s per channel needs large application-specific integrated circuits which are extremely costly and time-consuming to develop. Rapid real-time prototyping using a flexible, reprogammable DSP hardware based on field-programmable gate arrays (FPGAs) speeds up development cycles and saves cost while offering all advantages of a real-time implementation.

Fraunhofer HHI offers a highly flexible hardware platform for rapid real-time prototyping of new transceiver concepts for the Tb/s regime.

Facts

  • MicroTCA-based modular prototyping platform
  • Various plug-in boards like 65-GS7s DACs, 56-GS/s ADCs, FPGA processor, optoelectronic front-end
  • High-bandwidth packplane interface (>1Tb/s)
  • Ethernet interface for control and network integration
  • Ready-to-use IP cores for hardware interfacing
  • Reference IP core implementations of real-time DSP for various transmission systems

 

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Lab-as-a-service

Innovating coherent communication systems towards Tb/s per-channel capacity requires sophisticated know-how on component, system and network level. Precise characterization, careful optimization and accurate performance evaluation in a system laboratory with cutting edge equipment saves time and cost when working with a partner taht has rich experience and dedication to excellence.

Fraunhofer HHI provides test & measurement services for high-speed coherent communication systems with experienced staff in a world-class system lab environment. 

Facts

  • ISO 9001 certified
  • Optical transmission loop testbeds (C+L band)
  • High-performance equipment for digital/analog > 60 GBd QAM signal generation and reception
  • Different fiber types (terrestrual, submarine, multi-mode/core)
  • On-chip measurements (RF and optical coupling)
  • Lab-proven digital signal processing
  • Rich experience in component characterization

 

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