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28 July 2008 Full integrated beam combiner instrument based on SWIFTS concept
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Abstract
We present how photonics associated with new arising detection technologies is able to provide fully integrated instrument for interferometric beam combination. The feasibility and operation of on-chip beam combiners have been demonstrated now according to various combination schemes. More recently we have proposed a novel detection principle that allows to directly sample and extract the spectral information of the incoming optical signal together with the flux level measurement. The so-called SWIFTS concept that stands for Stationary-Wave Integrated Fourier Transform Spectrometer, is able to provide the full spectral and spatial information recorded simultaneously thanks to a motionless detecting device. Throughout the newly available detection principle that could be considered for SWIFTS implementation, some technologies are even able to provide photo-counting operation that may bring a significant extension of the astrophysical domain of investigation of interferometry. The proposed new concept is applicable either to a fringe tracker instrument with fast and sensitive capabilities, or to a dispersive instrument with high spectral resolution capabilities.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pierre Kern, Etienne Le Coärer, and Pierre Benech "Full integrated beam combiner instrument based on SWIFTS concept", Proc. SPIE 7013, Optical and Infrared Interferometry, 701315 (28 July 2008); https://doi.org/10.1117/12.789511
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