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Proceedings Paper

Efficient coupling of starlight into single mode photonics using Adaptive Injection (AI)
Author(s): Barnaby Norris; Nick Cvetojevic; Simon Gross; Alexander Arriola; Peter Tuthill; Jon Lawrence; Samuel Richards; Michael Goodwin; Jessica Zheng
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Paper Abstract

Using single-mode fibres in astronomy enables revolutionary techniques including single-mode interferometry and spectroscopy. However, injection of seeing-limited starlight into single mode photonics is extremely difficult. One solution is Adaptive Injection (AI). The telescope pupil is segmented into a number of smaller subapertures each with size ~ r0, such that seeing can be approximated as a single tip / tilt / piston term for each subaperture, and then injected into a separate fibre via a facet of a segmented MEMS deformable mirror. The injection problem is then reduced to a set of individual tip tilt loops, resulting in high overall coupling efficiency.

Paper Details

Date Published: 9 August 2016
PDF: 8 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99085E (9 August 2016); doi: 10.1117/12.2233757
Show Author Affiliations
Barnaby Norris, The Univ. of Sydney (Australia)
Nick Cvetojevic, The Univ. of Sydney (Australia)
Australian Astronomical Observatory (Australia)
Ctr. for Ultrahigh bandwidth Devices for Optical Systems (Australia)
Simon Gross, Ctr. for Ultrahigh bandwidth Devices for Optical Systems (Australia)
Macquarie Univ. (Australia)
Alexander Arriola, Ctr. for Ultrahigh bandwidth Devices for Optical Systems (Australia)
Macquarie Univ. (Australia)
Peter Tuthill, The Univ. of Sydney (Australia)
Jon Lawrence, Australian Astronomical Observatory (Australia)
Samuel Richards, The Univ. of Sydney (Australia)
Australian Astronomical Observatory (Australia)
ARC Ctr. of Excellence for All-Sky Astrophysics (Australia)
Michael Goodwin, Australian Astronomical Observatory (Australia)
Jessica Zheng, Australian Astronomical Observatory (Australia)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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