End effects in optical fibres

Allington-Smith, J.; Dunlop, C.; Lemke, U.; Murray, G.

doi:10.1093/mnras/stt1842

End effects in optical fibres

Allington-Smith, J.; Dunlop, C.; Lemke, U.; Murray, G.

Authors

J. Allington-Smith

C. Dunlop

U. Lemke

Graham Murray g.j.murray@durham.ac.uk
Senior Research Fellow

Abstract

The performance of highly multiplexed spectrographs is limited by focal ratio degradation (FRD) in the optical fibres. It has already been shown that this is caused mainly by processes concentrated around the mounting points at the ends of the fibres. We use the thickness of rings produced in the far-field when a fibre is illuminated by a collimated beam, to estimate the size of the region where the FRD is generated. This requires the development of a new model, using features of existing ray-tracing and wave-based models, which fits existing data very well. The results suggest that the amount of FRD is primarily determined by the length of fibre bonded into the supporting ferrule. We point out the implications for the production of future fibre systems.

Citation

Allington-Smith, J., Dunlop, C., Lemke, U., & Murray, G. (2013). End effects in optical fibres. Monthly Notices of the Royal Astronomical Society, 436(4), 3492-3499. https://doi.org/10.1093/mnras/stt1842

Journal Article Type	Article
Acceptance Date	Sep 25, 2013
Online Publication Date	Oct 29, 2013
Publication Date	Dec 21, 2013
Deposit Date	Mar 22, 2016
Publicly Available Date	Apr 22, 2016
Journal	Monthly Notices of the Royal Astronomical Society
Print ISSN	0035-8711
Electronic ISSN	1365-2966
Publisher	Royal Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	436
Issue	4
Pages	3492-3499
DOI	https://doi.org/10.1093/mnras/stt1842
Related Public URLs	http://adsabs.harvard.edu/abs/2013MNRAS.436.3492A

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This article has been accepted for publication in Monthly notices of the Royal Astronomical Society ©: 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.