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High Bit-Rate Transceiver for short Optical Interconnection (HiTrans)

Development of compact, low-cost, low-power optoelectronic transceivers for short-range optical interconnect at up to 40 Gbps

The Objective

The HiTrans project focuses on the development of the mass-production feasible low-power transceiver for short-range optical interconnect at more than 20Gbps data rate. The target was to develop complete transmitter and receiver optical subassembly (TOSA/ROSA) for 40Gbps optical interconnection. The main system requirements were: low power consumption, compact package with fiber connector receptacle, data rate up to 40Gbps.

IHP’s Contribution


IHP has developed directly modulated (DM) VCSEL driver for 40Gbps. Typical output current levels Ilow=4mA and Ihigh=8mA into 100Ω common cathode VCSEL. The nominal supply voltage is 3.3V and the power consumption of the driver including VCSEL is 140mW for typical conditions. IHP has also cooperated with TU Dresden on the design of Transimpedance amplifier as well as on the design of high-voltage swing modulator driver for 40Gbps data rate.



This project was founded by Vertically Integrated Systems (VIS)

Project Partners

VI Systems GmbH, Berlin, Germany

TU Dresden, Germany

TU Berlin, Germany

IZM Berlin, Germany

EZcon Berlin, Germany

Selected Publications

[1] C. Knochenhauer, J.C. Scheytt, F. Ellinger, “A Compact, Low-Power 40-GBit/s Modulator Driver With 6-V Differential Output Swing in 0.25μm SiGe BiCMOS.” IEEE Journal of Solid State Circuits, 46(5), pp. 1137-1146, 2011.

[2] C. Knochenhauer, B. Sedighi, F. Ellinger, “40 Gbit/s transimpedance amplifier with high linearity range in 0.13 μm SiGe BiCMOS.” Electronics Letters, 47(10), pp. 605-606, 2011

External Links

The building and the infrastructure of the IHP were funded by the European Regional Development Fund of the European Union, funds of the Federal Government and also funds of the Federal State of Brandenburg.