Optical fibre pseudo-slits for astronomy

John J. Davenport; Momen Diab; Aashana Tripathi; Kalaga Madhav; Martin M. Roth

doi:10.1117/12.2562652

13 December 2020 Optical fibre pseudo-slits for astronomy

John J. Davenport, Momen Diab, Aashana Tripathi, Kalaga Madhav, Martin M. Roth

Proceedings Volume 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV; 1145123 (2020) https://doi.org/10.1117/12.2562652
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

We present a method of assembling a fiber-optic pseudo-slit, inside a custom FC connector. 19 SMFs with 80 μm cladding diameters are arranged in a 1,511 μm pseudoslit, held in the center of a connector ferrule. The SMFs in the pseudo-slit are well positioned and well ordered, having an average core separation in the ‘long’ direction of 79.5 μm and an StDev in the ‘narrow’ direction of 2.68 μm. The nearfield output distribution of the pseudo-slit was measured under 615-730 nm light, finding an FWHM intensity distribution ratio between the two directions of 1 : 21.9. This method could be used with other types of optical connector, allowing pseudo-slits to be used conveniently with existing optical instruments.

Conference Presentation

Citation Download Citation

John J. Davenport, Momen Diab, Aashana Tripathi, Kalaga Madhav, and Martin M. Roth "Optical fibre pseudo-slits for astronomy", Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 1145123 (13 December 2020); https://doi.org/10.1117/12.2562652

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