21 July 2010 Development of a CELestial Infrared Nuller Experiment (CELINE) for broadband nulling and new single-mode fiber testing
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Abstract
The 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.
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Charles Hanot, Charles Hanot, Pierre Riaud, Pierre Riaud, Dimitri Mawet, Dimitri Mawet, Olivier Absil, Olivier Absil, Jean Surdej, Jean Surdej, Serge Habraken, Serge Habraken, "Development of a CELestial Infrared Nuller Experiment (CELINE) for broadband nulling and new single-mode fiber testing", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77342L (21 July 2010); doi: 10.1117/12.856843; https://doi.org/10.1117/12.856843
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