Title :
Numerical aperture of multimode fibers by several methods: resolving differences
Author :
Franzen, D.L. ; Young, M. ; Cherin, A.H. ; Head, E.D. ; Hackert, M.J. ; Raine, K.W. ; Baines, J.G.N.
Author_Institution :
NBS, Boulder, CO, USA
fDate :
6/1/1989 12:00:00 AM
Abstract :
An industrywide study among members of the Electronic Industries Association was conducted to document differences among three numerical aperture measurement methods. Results on 12 multimode graded index fibers indicate systematic differences exist among commonly used far-field and index profile techniques. Differences can be explained by a wavelength-dependent factor and choice of definitions. Conversion factors can be used to relate the various methods
Keywords :
gradient index optics; optical fibres; Electronic Industries Association; conversion factors; far-field techniques; index profile techniques; multimode fibers; multimode graded index fibers; numerical aperture measurement methods; wavelength-dependent factor; Apertures; Electronics industry; Interferometry; Lamps; Loss measurement; Optical fiber communication; Optical fiber testing; Performance loss; Refractive index; Wavelength measurement;
Journal_Title :
Lightwave Technology, Journal of
