VCSELs and Optical Interconnects

Headed by Prof. Karl Joachim Ebeling from 1989 until March 2001, the group has a particularly strong research background in the field of vertical-cavity surface-emitting lasers (VCSELs).

At present, our activities are focused on novel optoelectronic devices in the 700 to 1000 nm spectral region, optical interconnect systems, and optical sensing. More in particular, we are working on

  • next-generation high-speed VCSELs in on-board transceivers for use in modern data centers and supercomputers,
  • high-bandwidth photodetectors for multimode fiber transmission systems,
  • novel VCSEL designs, in particular the monolithic integration of phototransistors for optically controlled current confinement,
  • spintronic VCSELs with high and tunable birefringence for future polarization modulation schemes,
  • as well as electrical, thermal, and optical modeling and design of optoelectronic devices.

We love to identify new applications areas of VCSELs, e.g. in optical sensing and metrology, biophotonics, ...

If you like to discuss your ideas, please don't hesitate to contact us.

Links: Group members and publications




Rainer Michalzik
(apl. Prof., Dr.-Ing. habil.,
Dipl.-Ing. Electrical Engineering)
Ulm University
Institute of Optoelectronics
Albert-Einstein-Allee 45
D-89081 Ulm
Room: 45.2.234
Phone: +49 (0) 731 50-26048
Fax: +49 (0)731 50-26049

A great deal of our work is being performed in the excellently equipped cleanroom of Ulm University.



We enjoy a fruitful collaboration with Philips Technologie GmbH U-L-M Photonics, which emerged from the VCSEL group in the year 2000 and which is one of the world leaders in VCSEL fabrication.



We are an active member of the Photonics BW Association.



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