Showing papers on "Mode scrambler published in 1975"
TL;DR: A simple method has been devised for the experimental determination of mode conversion coefficients in multimode fibers and involves only the observation of the far-field output as the angle of incidence of a collimated input beam is changed.
Abstract: A simple method has been devised for the experimental determination of mode conversion coefficients in multimode fibers and involves only the observation of the far-field output as the angle of incidence of a collimated input beam is changed. The normalized mode coupling coefficient in a liquid-core fiber is D = 3 x 10-6 rad2 / m and increases by as much as a factor of 10 when transverse pressure is applied. Values some 2 orders of magnitude larger are found in glass-core fibers. There is good agreement between the theory presented and experiment.
168 citations
TL;DR: In this article, external higher-index mode filters were fabricated and their filter actions were confirmed experimentally, showing that the increase of the pulsewidth at the half-peak value was reduced from 640 to 130 ps at the expense of loss penalty of 0.7 dB including connection losses.
Abstract: External higher‐index mode filters were fabricated and their filter actions were confirmed experimentally. Loading the multimode fiber with the mode filter, the increase of the pulsewidth at the half‐peak value was reduced from 640 to 130 ps, at the expense of loss penalty of 0.7 dB including the connection losses. These data suggest the effectiveness of mode filter insertion for band widening of multimode fibers.
10 citations