Absil, Olivier[Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Surdej, Jean[Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Habraken, Serge[Université de Liège - ULg > Département de physique > Optique - Hololab - CSL (Centre Spatial de Liège) >]
Optical and Infrared Interferometry II
Danchi, W. C.
Rajagopal, J. K.
Proceedings of the SPIE, volume 7734
Astronomical Telescopes and Instrumentation 2010: Optical and Infrared Interferometry II
27/06/2010 - 2/07/2010
[en] he small angular distance (<100 mas) and the huge flux ratio (107) between an Earth-like exoplanet in the socalled habitable zone and its host star makes it very difficult to direct image such systems. Nulling interferometry consists of a very powerful technique that combines destructively the light from two or more collectors to dim the starlight and to reveal faint companions in its vicinity. We have developed a new nulling experiment based on the fiber nuller principle. This fully symmetric reflective nulling bench aims at testing broadband nulling in both H and K bands as well as characterizing photonic fibers for modal filtering. We present in this paper the design, the development as well as preliminary results of the experiment.