The effect of the longitudinal polarization component in multi-axial nulling interferometry for exoplanet detectionJ. F. P. Spronck and S. F. Pereira
Optics Research Group, Dept. of Imaging Science and Technology, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
Received 5 March 2008 / Accepted 3 February 2009
We show a fundamental limitation of multi-axial beam combiners in nulling interferometry. The longitudinal electric field induced by the focusing optics can drastically limit the performance of such a nulling interferometer. We further analyze the filtering capabilities of a single-mode optical fiber with respect to that longitudinal field.
Key words: technique: interferometric -- instrumentation: interferometers
© ESO 2009