Dr. Hans Georg Limberger

Senior Scientist

Hans G. Limberger received his physics diploma from University of Freiburg, Germany in 1983 for his work on high resolution molecular beam laser spectroscopy and his PhD. degree (Dr. rer. nat.) from the University of Stuttgart, Germany in 1988 for his work on photoionization spectroscopy of cesium and cesium oxide clusters (performed at Max Planck Institute for Solid State Research in Stuttgart). Since 1991 his work at Ecole Polytechnique Fédérale de Lausanne (EPFL) concentrates on optical fiber components and devices for telecommunications and sensing with a particular focus on fiber gratings, active and passive fiber grating devices and fiber lasers. He is the author of more than 175 journal and conference contributions including invited, plenary, and keynote presentations as well as patents. He was vice chairman of COST action 246 and chairman of COST 270 (Reliability of optical components and devices in communications networks and systems). He participated in a number of international and national research projects.
Dr. Limberger has served as a member of different Technical Program Committees, e.g. Optical Fiber Communication Conference (OFC 2010-2013), European Conference on Optical Communications (ECOC 2009-2018), and Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides (BGPP). He was a topical chair of ECOC 2011, 2016, and 2017. In 1999 he founded the summer school on Photosensitivity in Optical Waveguides and Glasses (POWAG). He organized and co-chaired the 15th International Laser Physics Workshop, LPHYS'2006 (EPFL, Switzerland) and he was part of different conference steering committees (ECOC, LPHYS, POWAG). Currently he is program chair of BGPP topical meeting which is part of the OSA Advanced Photonics Congress 2018 (Zürich, Switzerland).


Research Area

The following research areas are currently covered:

Glass structural changes: Characterization of laser induced photosensitivity in germanium doped and germanium free silica optical fibers using grating writing and measurement of laser induced birefringence changes. Characterization of laser induced stress and inelastic strain changes.

Novel all fiber lasers: realization and characterization of bismuth doped silica optical fiber lasers with FBG as laser mirrors.

Optical fiber sensors: fiber gratings for extended nondestructive testing

Reliability of optical fibers and components: stability of UV-induced refractive index changes

Grating characterization tools: development of Optical Low Coherence Reflectometry systems (phase and amplitude); development of tomographic birefringence measurement systems.


BM 4116 (Bâtiment BM)
Station 17
CH-1015 Lausanne