Photonic technologies for a pupil remapping interferometer
Date
2010
Authors
Tuthill, Peter G
Jovanovic, Nemanja
Lacour, Sylvestre
Lehmann, A
Ams, Martin
Marshall, Graham D
Lawrence, J
Withford, Michael
Robertson, Gordon
Pope, B J S
Journal Title
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Volume Title
Publisher
Societe des Etudes Robespierristes
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.
Description
Keywords
Keywords: Astrophotonics; Beam combiner; Bulk substrates; Direct-write technique; Fiber-optic technology; New approaches; Optical functionalities; Optical interferometry; Path length; Photonic processing; Photonic technologies; Remapping; Reproducibilities; Spatial Astrophotonics; Direct write technique; Optical interferometry; Ultrafast material processing
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Source
Proceedings of SPIE - The International Society for Optical Engineering
Type
Conference paper
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2037-12-31