Photonic lattices for astronomical interferometry

Abstract

Regular two-dimensional lattices of evanescently coupled waveguides may provide in the near future photonic components capable of combining interferometrically and simultaneously a large number of telescopes, thus easing the imaging capabilities of optical interferometers. In this paper, the theoretical modeling of the so-called Discrete Beam Combiners (DBC) is described and compared to the conventional model used for photonic beam combiners for astronomical interferometry. The performance of DBCs as compared to an ideal ABCD beam combiner is discussed and applications to astronomical instrumentation analyzed.

References in corpus (6)

• PIONIER: a 4-telescope visitor instrument at VLTI
• Three-dimensional mid-infrared photonic circuits in chalcogenide glass
• Ultrafast laser inscription: an enabling technology for astrophotonics
• Astrointerferometry with discrete optics
• Characterization of integrated optics components for the second generation of VLTI instruments
• Comparison of Fourier and model-based estimators in single mode multiaxial interferometry

Cited by in corpus (6)

• 2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments
• Controlled engineering of extended states in disordered systems
• Starlight coupling through atmospheric turbulence into few-mode fibers and photonic lanterns in the presence of partial adaptive optics correction
• Simulations of mode-selective photonic lanterns for efficient coupling of starlight into the single-mode regime
• Modal analysis using photonic lanterns coupled to arrays of waveguides
• Six-telescope integrated optics beam combiner fabricated using ultrafast laser inscription for J- and H-band astronomy