Sampling of the telescope image plane using single- and few-mode fibre arrays | Zendy

Jason C.W. Corbett | Zendy

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Sampling of the telescope image plane using single- and few-mode fibre arrays

Author(s) -

Jason C.W. Corbett

Publication year - 2009

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.001885

Subject(s) - optics , point spread function , cardinal point , single mode optical fiber , telescope , starlight , physics , sampling (signal processing) , transmission (telecommunications) , coupling (piping) , field of view , materials science , optical fiber , detector , computer science , telecommunications , stars , astronomy , metallurgy

The coupling efficiency of starlight into single and few-mode fibres fed with lenslet arrays to provide a continuous field of view is investigated. The single-mode field of view (FOV) and overall transmission is a highly complicated function of wavelength and fibre size leading to a continuous sample only in cases of poor throughput. Significant improvements are found in the few-mode regime with a continuous and efficient sample of the image plane shown to be possible with as few as 4 modes. This work is of direct relevance to the coupling of celestial light into photonic instrumentation and the removal of image scrambling and reduction of focal ratio degradation (FRD) using multi-mode fibre to single-mode fibre array converters.

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