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Optical fiber modal noise suppression in the NIR region using Multicore Fiber and Photonic Lanterns.

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Date

2018

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Abstract

Modal noise has been shown to critically limit the signal-to-noise ratio achievable in fiber-coupled, high-resolution spectrographs. We are investigating new fiber technologies that can potentially solve the modal noise issues in the NIR region. The new technology that we present is a combination of a multicore fiber (MCF) and a photonic lantern (PL) specifically designed to provide highly efficient phase scrambling in the NIR with a low mode count. In this paper we give an overview of the specifications, design and manufacture of the multicore fiber and photonic lantern. We also present the initial modal noise test results for the MCF-PL and an octagonal multimode fiber for comparison.

Description

Keywords

Exoplanet detection, Fiber scrambling, Instrument stability, Modal noise, Multicore fiber, Octagonal fiber, Photonic lantern, Radial velocity

Citation

URI

https://dspace-test.anu.edu.au/handle/1885/733730897

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DevOps Pure Testing

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Conference contribution

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DOI

10.1117/12.2314224

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