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Influence of Optical Fiber Parameters on the Speckle Pattern and Spectral Observation in Astronomy

open access: yesPhotonics
Optical fibers serve as a bridge to transmit starlight into the spectrograph in fiber spectral surveys. Due to the interference between multiple modes supported within the fiber, a granular speckle pattern appears on the end of the fiber and leads to an ...
Anzhi Wang   +10 more
doaj   +1 more source

Seeing the Invisible through Speckle Images [PDF]

open access: yesarXiv
Scattering obscures information carried by wave by producing a speckle pattern, posing a common challenge across various fields, including microscopy and astronomy. Traditional methods for extracting information from speckles often rely on significant physical assumptions, complex devices, or intricate algorithms. Recently, machine learning has emerged
arxiv  

Monte Carlo simulation of interferometric measurement and wavefront shaping under influence of shot noise and camera noise

open access: yesJPhys Photonics
Interferometry often serves as an essential building block of wavefront shaping systems to obtain optimal wavefront solutions. In this tutorial, we provide a Monte Carlo simulation tool to calculate the accuracy of interferometric measurements and its ...
Chunghyeong Lee   +3 more
doaj   +1 more source

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