Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994joptt..61..670p&link_type=abstract
Journal of Optical Technology (ISSN 1070-9762), vol. 61, no. 9, p. 670-673
Astronomy and Astrophysics
Astronomy
Calibrating, Michelson Interferometers, Monochromatic Radiation, Optical Fibers, Atmospheric Effects, Diffraction Patterns, Image Contrast
Scientific paper
This paper discusses the possibility of using in an astronomical long-baseline interferometer a multimode optical fiber of low modal composition in place of the accepted single-mode fiber. To establish under laboratory conditions how contrast depends on source size and atmospheric distortions, the visibility of the observed interference fringes was measured in a stellar Michelson interferometer. The measurements were made using a monochromatic source. By comparison with a single-mode fiber, an insignificant reduction was noted in the contrast for a multimode fiber, along with an increase in fringe brightness.
Froehly C.
Pokrovskii S.
Reynaud François
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