Dispersion effects on the phase closure term: tests on a fiber interferometer

Guillaume Huss; Emmanuel Longueteau; Laurent Delage; Francois Reynaud

doi:10.1117/12.457129

21 February 2003 Dispersion effects on the phase closure term: tests on a fiber interferometer

Guillaume Huss, Emmanuel Longueteau, Laurent Delage, Francois Reynaud

Proceedings Volume 4838, Interferometry for Optical Astronomy II; (2003) https://doi.org/10.1117/12.457129
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The phase closure is well known to remove the phase biases in a three-arm interferometer. This property is very useful to avoid the phase effect of the atmosphere in stellar interferometry. In this paper we theoretically investigate the effect of differential dispersion in a three-arm interferometer. We demonstrate that phase closure is corrupted by this spectral behavior. This theoretical analysis is illustrated by experimental results on a fiber version of a stellar interferometer. The good accordance between the numerical simulations and the experimental results valid this model.

Citation Download Citation

Guillaume Huss, Emmanuel Longueteau, Laurent Delage, and Francois Reynaud "Dispersion effects on the phase closure term: tests on a fiber interferometer", Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); https://doi.org/10.1117/12.457129

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