Bert Jan Offrein  Bert Jan Offrein photo         

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Manager Photonics - Principal Research Staff Member
Zurich Research Laboratory, Zurich, Switzerland
  +41dash44dash724dash85dash72

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Professional Associations

Professional Associations:  IEEE Member  |  IEEE Photonics Society

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More information:  Photonics & optoelectronics  |  Neuromorphic computing  |  Silicon photonics

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IBM Zurich Research Laboratory, Rüschlikon, Switzerland. (Since June 2004)

Manager Neuromorphic Devices and Systems Group

The group establishes novel devices and subsystems for high performance and power efficient neuromorphic computing. Special emphasis is put on AI accelerators for analog synaptic signal processing. Both electrical and photonic implementations are pursued. Electrical analog AI accelerator are based on memristive crossbar arrays while the photonic devices build on silicon photonics technology as originally established for optical communication.

IBM Zurich Research Laboratory, Rüschlikon, Switzerland. (Since July 2016)

Manager Photonics Group
The Photonics group addressed new technologies, materials and advanced concepts for optical interconnects, silicon photonics and nanophotonic devices.

IBM Zurich Research Laboratory, Rüschlikon, Switzerland. (October 2004 - June 2016)

Research Staff Member in the Photonics group
Optical interconnect technology for board-level links. Focus on the integration of transceivers and the assembly of optical connectors.

IBM Zurich Research Laboratory, Rüschlikon, Switzerland. (September 2000 – September 2004)

Manager Photonic Device Technology group
The silica-silicon photonic integrated circuits technology based on silicon-oxynitride is commercialized with an external partner. The Photonic Device Technology team designs and characterizes state of the art devices such as dynamic gain equalizers, adaptive chromatic dispersion equalizers and add-drop filters for telecommunication applications. Furthermore there is a strong focus on understanding and improving the fundamental properties of the technology.

JDS Uniphase, Zurich, Switzerland. (November 1999 - Augustus 2000)

Representative product engineer / Yield engineer
Customer interface for the latest 980 nm pump laser product. Yield analysis and optimization as well as parameter extraction automation to enable a transition to full 2 inch wafer processing.

IBM Zurich Research Laboratory, Rüschlikon, Switzerland. (December 1996 - October 1999)

Research Staff Member in the Optical Networking group
Establish silica-on-silicon integrated optic technology based on high-index contrast silicon-oxynitride. Focus on the design and characterization of dynamic optical devices.

IBM Zurich Research Laboratory, Rüschlikon, Switzerland. (Juni 1995 - November 1996)

Post Doctoral Researcher in the Optical Networking group
Establish silica-on-silicon integrated optic technology based on high-index contrast silicon-oxynitride. Focus on the design and characterization of dynamic optical devices and establishing the required measurement infrastructure.

Faculty of Applied Physics, University of Twente, the Netherlands (November 1994 - Mai 1995)
Post Doctoral researcher in the Transduction and Materials Science group
Continuation of the PhD thesis work, perform lectures for students.

Faculty of Applied Physics, University of Twente, the Netherlands (November 1990 – Oct. 1994)
PhD Student in the Transduction and Materials Science group
PhD Thesis defence at October 28, 1994
Thesis: "The Fabry-Perot Resonator as an All-Optical Switching Device."
PhD Advisor: Prof.Dr. Th.J.A. Popma, Assistant Advisor: Dr. H.J.W.M. Hoekstra.
The thesis research addressed the design and realization of integrated optic Fabry-Perot resonator as an all-optical logic switch. Methods to characterize the nonlinearity of potential materials were established and tested. Nonlinear devices were realized, simulated and measured.