Raik Elster

Research staff member
Institute of Electrical and Optical Communications Engineering
Optics group


+49 711 685-67919
+49 711 685-67900

Business card (VCF)

Pfaffenwaldring 47
70569 Stuttgart
Room: 2.409


Due to increasing data rates in telecommunication, optical communications engineering is highly significant, since high band widths are likely to achieve. At the same time, it is necessary to reduce the required space and thus the costs by integrating the optical systems on microchips. The Institute of Electrical and Optical Communications Engineering takes part on the research of passive and active optical structures based on silicon semiconductor technologies. Silicon is lucent at the wavelength of 1550 nm, which is commonly used in optical communications. My research field mainly covers modulators, which are used to modulate the transmitting data on the light by electrical stimulation. Additionally, I deal with new concepts of fiber connections on the chip.

  • Electrooptical modulators
  • Polymerical modulators
  • New concepts of fiber connections
  1. 2020

    1. R. H. Klenk, C. Schweikert, N. Hoppe, L. Nagy, R. Elster, W. Vogel, and M. Berroth, “Integrated Dispersive Structures for Bandwidth-Enhancement of Silicon Grating Couplers,” Optical and Quantum Electronics, vol. 52, no. 2, pp. 1--13, 2020.
    2. C. Schweikert, N. Hoppe, R. Elster, T. Föhn, W. Vogel, and M. Berroth, “Design of a Broadband Integrated Notch Filter in Silicon Nitride,” in International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), Virtual Event (hosted by Politecnico di Torino, Italy), 2020, pp. 89--90.
  2. 2017

    1. M. Félix Rosa, L. Rathgeber, R. Elster, N. Hoppe, T. Föhn, M. Schmidt, W. Vogel, and M. Berroth, “Design of a carrier-depletion Mach-Zehnder modulator in 250 nm silicon-on-insulator technology,” Advances in Radio Science, vol. 15, pp. 269--281, 2017.
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