Ramskov Hansen, J.J., Ankiewicz, A. and Adams, M.J.
Attenuation leaky modes in graded non-circular multimode fibres
Electronics Letters, 16, (3), . (doi:10.1049/el:19800072).
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A simple formula for the attenuation constant of leaky modes in a generalised class of noncircular graded-index fibres is derived both from geometrical optics and a WKB method. The leaky mode attenuation in near-parabolic profile fibres is shown to increase rapidly with increasing eccentricity of the fibre.
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