Abstract
Impulse responses of a wide class of multimode optical fibres with near-optimum index profiles are investigated. The index profile is described by three parameters: the power law exponentα, the magnitude and the width of a dip at the centre of the core. It is found that for overcompensated profiles (α<α opt) a moderate dip decreases the r.m.s. dispersion. Leaky modes are found to improve the dispersion characteristics for fibres with a dip in the index profile. Impulse response measurements are interpretated to give information about the index profile.
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Hansen, J.J.R. Pulse broadening in near-optimum graded-index fibres. Opt Quant Electron 10, 521–526 (1978). https://doi.org/10.1007/BF00619854
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DOI: https://doi.org/10.1007/BF00619854