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Showing papers by "Kerstin Worhoff published in 2002"

Proceedings Article•
Passband flattening and rejection band broadening of a periodic Mach-Zehnder wavelength filter by adding a tuned ring resonator

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Chris G. H. Roeloffzen1, R.M. de Ridder, Gabriel Sengo, Kerstin Worhoff, Ann Driessen •
University of Twente1
08 Sep 2002
TL;DR: In this paper, a thermo-optically tuneable periodic wavelength filter with a 50 GHz free spectral range based on a Mach-Zehnder interferometer with ring resonator has been fabricated in SiON waveguide technology.
Abstract: A thermo-optically tuneable periodic wavelength filter having a rectangular wavelength response with a 50 GHz free spectral range, based on a Mach-Zehnder interferometer with ring resonator has been fabricated in SiON waveguide technology.

8 citations

Proceedings Article•
Fabrication of low optical losses Al2O3 layer used for Er3+-doped integrated optical amplifiers

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Gan Shuyi, Boudewijn Docter, D.J.W. Klunder, L.T.H. Hilderink, Kerstin Worhoff 
01 Jan 2002
TL;DR: In this paper, a Graeco-Latin square is used in DC reactive magnetron sputtering deposition experiment in order to get low optical losses Al2O3 layer and an optimal combination of deposition parameters is obtained via statistic analysis with the fewest experimental runs.
Abstract: Al2O3 is commonly used as host material for Er3+-doped integrated optical amplifiers. In this paper, a Graeco-Latin square is used in DC reactive magnetron sputtering deposition experiment in order to get low optical losses Al2O3 layer. By reasonable selection and careful arrangement of experimental parameters, an optimal combination of deposition parameters is obtained via statistic analysis with the fewest experimental runs. The result forms the base for the further fabrication of Er3+-doped Al2O3 layer. The Graeco-Latin square experiment can also be used to investigate the influence of each parameter on the deposition rate of Al2O3 layer.