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Proceedings Paper

Photonic technologies for a pupil remapping interferometer
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Paper Abstract

Interest in pupil-remapping interferometry, in which a single telescope pupil is fragmented and recombined using fiber optic technologies, has been growing among a number of groups. As a logical extrapolation from several highly successful aperture masking programs underway worldwide, pupil remapping offers the advantage of spatial filtering (with single-mode fibers) and in principle can avoid the penalty of low throughput inherent to an aperture mask. However in practice, pupil remapping presents a number of difficult technological challenges including injection into the fibers, pathlength matching of the device, and stability and reproducibility of the results. Here we present new approaches based on recently-available photonic technologies in which coherent threedimensional waveguide structures can be sculpted into bulk substrate. These advances allow us to miniaturize the photonic processing into a single, robust, thermally stable element; ideal for demanding observatory or spacecraft environments. Ultimately, a wide range of optical functionality could be routinely fabricated into such structures, including beam combiners and dispersive or wavelength selective elements, bringing us closer to the vision of an interferometer on a chip.

Paper Details

Date Published: 21 July 2010
PDF: 9 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 77341P (21 July 2010); doi: 10.1117/12.856770
Show Author Affiliations
Peter Tuthill, The Univ. of Sydney (Australia)
Nemanja Jovanovic, Macquarie Univ. (Australia)
Australian Astronomical Observatory (Australia)
Sylvestre Lacour, Observatoire de Paris à Meudon (France)
Andrew Lehmann, Macquarie Univ. (Australia)
Martin Ams, Macquarie Univ. (Australia)
Ctr. for Ultrahigh bandwidth Devices for Optical Systems (Australia)
Graham Marshall, Macquarie Univ. (Australia)
Ctr. for Ultrahigh bandwidth Devices for Optical Systems (Australia)
Jon Lawrence, Macquarie Univ. (Australia)
Australian Astronomical Observatory (Australia)
Michael Withford, Macquarie Univ. (Australia)
Ctr. for Ultrahigh bandwidth Devices for Optical Systems (Australia)
Gordon Robertson, The Univ. of Sydney (Australia)
Michael Ireland, The Univ. of Sydney (Australia)
Benjamin Pope, The Univ. of Sydney (Australia)
Paul Stewart, The Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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