A single, tailorable seven-phase qualification template (PIC-SQT) consolidates 19 NASA/ESA/industry test steps for space-bound astrophotonic chips, plus a gap list of unstandardized tests.
Mode expansion theory and application in step-index multimode fibres for astronomical spectroscopy
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abstract
In astronomical spectroscopy, optical fibres are abundantly used for multiplexing and decoupling the spectrograph from the telescope to provide stability in a controlled environment. However, fibres are less than perfect optical components and introduce complex effects that diminish the overall throughput, efficiency, and stability of the instrument. We present a novel numerical field propagation model that emulates the effects of modal noise, scrambling, and focal ratio degradation with a rigorous treatment of wave optics. We demonstrate that the simulation of the near- and far-field output of a fiber, injected into a ray-tracing model of the spectrograph, allows to assess performance at the detector level.
fields
astro-ph.IM 1years
2026 1verdicts
CONDITIONAL 1representative citing papers
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Qualification pathways for Photonic Integrated Circuits in Astrophotonic Space Missions
A single, tailorable seven-phase qualification template (PIC-SQT) consolidates 19 NASA/ESA/industry test steps for space-bound astrophotonic chips, plus a gap list of unstandardized tests.