A complete photonics correlation scheme for future mid-infrared heterodyne interferometry instrumentation

Guillaume Bourdarot; Jean-Philippe Berger; Tituan Allain; Hugues Guillet de Chatellus

doi:10.1117/12.2630394

26 August 2022 A complete photonics correlation scheme for future mid-infrared heterodyne interferometry instrumentation

Guillaume Bourdarot, Jean-Philippe Berger, Tituan Allain, Hugues Guillet de Chatellus

Author Affiliations +

Proceedings Volume 12183, Optical and Infrared Interferometry and Imaging VIII; 1218313 (2022) https://doi.org/10.1117/12.2630394
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

We present a characterization bench of a complete photonics correlation scheme for mid-infrared heterodyne interferometry. The bench can handle very high bandwidths RF signals generated by the heterodyne beating of celestial light with a local oscillator on future generation mid-infrared detectors. The bench is composed of a first two-beam stage allowing the mixing of the "science" source with the local oscillator and a second photonics correlation stage made with telecom components. We present the first experimental proof of concept. Two possible photonics correlation concepts including a patented double loop correlation are introduced.

Conference Presentation

Citation Download Citation

Guillaume Bourdarot, Jean-Philippe Berger, Tituan Allain, and Hugues Guillet de Chatellus "A complete photonics correlation scheme for future mid-infrared heterodyne interferometry instrumentation", Proc. SPIE 12183, Optical and Infrared Interferometry and Imaging VIII, 1218313 (26 August 2022); https://doi.org/10.1117/12.2630394

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