Preparation and testing of a fiber MOS unit feeding a near-infrared spectrograph

Roberto Speziali; Daniele Liberi; Fausto Cortecchia; Francesco D'Alessio; Gianluca Li Causi; Dario Lorenzetti; Fernando Pedichini; Fabrizio Vitali

doi:10.1117/12.551294

30 September 2004 Preparation and testing of a fiber MOS unit feeding a near-infrared spectrograph

Roberto Speziali, Daniele Liberi, Fausto Cortecchia, Francesco D'Alessio, Gianluca Li Causi, Dario Lorenzetti, Fernando Pedichini, Fabrizio Vitali

Author Affiliations +

Proceedings Volume 5492, Ground-based Instrumentation for Astronomy; (2004) https://doi.org/10.1117/12.551294
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

We describe the procedures adopted to realize the fiber unit for feeding the near IR multi-object spectrometer GOHSS. Since a scarce literature is available on this subject, all the steps of the fabrication processes are explained and documented through a detailed illustrative material: in particular the polishing methods of the fiber ends are addressed along with the criteria for evaluating the achieved results; the preparation and application of the ferrules; the matching with the input micro-lens; finally, the laboratory tests to measure the focal ratio degradation of each fiber are presented aiming also to certify the quality of the realized device.

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Roberto Speziali, Daniele Liberi, Fausto Cortecchia, Francesco D'Alessio, Gianluca Li Causi, Dario Lorenzetti, Fernando Pedichini, and Fabrizio Vitali "Preparation and testing of a fiber MOS unit feeding a near-infrared spectrograph", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); https://doi.org/10.1117/12.551294

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