Low V-number optical fibers: Secondary maxima in the far-field radiation pattern

This is the authors' abstract. We don't add key points for this paper.

Photoelectric and photographic techniques have been used to measure and display the intensities and positions of as many as six secondary maxima in the far-field radiation patterns of a variety of low V-number optical fibers. The effects of changing the shape of the refractive-index profile of the fiber core on the secondary maxima are investigated. The power distribution of the light propagating in the core region is compared to the refractive-index distribution.