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Design, simulation and characterization of integrated photonic spectrographs for Astronomy II: Low-aberration Generation-II AWG devices with three stigmatic points
Andreas Stoll, Kalaga Madhav, Martin Roth
In the second part of our series on integrated photonic spectrographs for astronomy, we present theoretical and experimental results on the design, simulation and characterization…
Design, simulation and characterization of integrated photonic spectrographs for Astronomy I: Generation-I AWG devices based on canonical layouts
Andreas Stoll, Kalaga V. Madhav, Martin M. Roth
We present an experimental study on our first generation of custom-developed arrayed waveguide gratings (AWG) on silica platform for spectroscopic applications in near-infrared ast…
Optimal SMF packing in photonic lanterns: comparing theoretical topology to practical packing arrangements
John J. Davenport, Momen Diab, Kalaga Madhav +1
Photonic lanterns rely on a close packed arrangement of single mode fibers, which are tapered and fused into one multi-mode core. Topologically optimal circle packing arrangements…
Simulations of mode-selective photonic lanterns for efficient coupling of starlight into the single-mode regime
Momen Diab, Aashana Tripathi, John Davenport +3
In ground-based astronomy, starlight distorted by the atmosphere couples poorly into single-mode waveguides but a correction by adaptive optics, even if only partial, can boost cou…