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Proceedings Paper

Fluoride Glass Infrared Fibers For Light Transmission Up To 5 pm
Author(s): Gwenael Maze; Vincent Cardin; Marcel Poulain
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Paper Abstract

Fluoride glass fibers of raising numerical aperture have been drawn from preforms. The increase in refractive index difference between core and cladding has been obtained by lowering the concentration of aluminium in the core. The evolution of the numerical aperture of these fibers has been measured with an apparatus specially constructed. The numerical aperture decreases slowly with increasing wavelength. In high numerical aperture fibers, N.A passes through a minimum at 2.9 μm which can be due to a difference in OH- absorption of core and cladding. Fibers with a low aluminium content in the core have lower losses at high wavelength than others, although their average level of losses-is higher.

Paper Details

Date Published: 16 October 1984
PDF: 6 pages
Proc. SPIE 0484, Infrared Optical Materials and Fibers III, (16 October 1984); doi: 10.1117/12.943148
Show Author Affiliations
Gwenael Maze, "Le Verre Fluore S.A." (France)
Vincent Cardin, "Le Verre Fluore S.A." (France)
Marcel Poulain, "Le Verre Fluore S.A." (France)

Published in SPIE Proceedings Vol. 0484:
Infrared Optical Materials and Fibers III
Paul Klocek, Editor(s)

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