High-speed data transfer with FPGAs and QSFP+ modules
  We present test results and characterization of a data transmission system based on a last generation FPGA and a commercial QSFP+ (Quad Small Form Pluggable +) module. QSFP+ standard defines a hot-pluggable transceiver available in copper or optical cable assemblies for an aggregated bandwidth of up to 40 Gbps. We implemented a complete testbench based on a commercial development card mounting an Altera Stratix IV FPGA with 24 serial transceivers at 8.5 Gbps, together with a custom mezzanine hosting three QSFP+ modules. We present test results and signal integrity measurements up to an aggregated bandwidth of 12 Gbps. 
R. Ammendola, A. Biagioni, G. Chiodi, O. Frezza, F. Lo Cicero, A.   Lonardo, R.Lunadei, P. S. Paolucci, D. Rossetti, A. Sala...
physics.ins-det physics.comp-ph