The coupling performance of photonic crystal fibres in fibre stellar interferometry

J. Corbett, A. Dabirian, T. Butterley, Niels Asger Mortensen, J.R. Allington-Smith

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Abstrakt

Large mode area (LMA), single-mode photonic crystal fibres (PCFs) have the potential to provide significant instrumental advantages in fibre stellar interferometry, due to their broadband attenuation spectrum, endlessly single-moded performance and very large core size. We investigate the theoretical performance of coupling the telescope point spread function directly into LMA PCFs. We find that a single LMA fibre can replace as many as three step-index fibres for atmospheric seeing characterized by D-T/r(o) >= 2 with approximately the same coupling performance and a slower feed from the telescope. This could lead to considerable simplification of broad-band fibre interferometers.
OriginalsprogEngelsk
TidsskriftRoyal Astronomical Society. Monthly Notices
Vol/bind368
Udgave nummer1
Sider (fra-til)203-210
ISSN0035-8711
StatusUdgivet - 2006
Udgivet eksterntJa

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