Dispersion

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Dispersion

In statistics, the placement of data points along a chart relative to an average or mean line. Dispersion is important to finance as the data points of say, a stock, determine the mean, which in turn helps determines the stock's trend. Dispersion is also used to determine volatility: data points all over the chart indicate that a stock has wild fluctuation in price.
References in periodicals archive ?
Figures 8 and 9 compare the total chromatic dispersion, D, with the sum of the waveguide dispersion, [D.sub.w], and material dispersion, [D.sub.m] for step-index and parabolic index profile fibers with Ge[O.sub.2]-doped core (13.5%) and pure Si[O.sub.2] cladding for a range of different core radii.
Waveguide dispersion is caused by physical structure of optical fiber core and cladding (refractive index profile), and as a result different wavelengths propagate at different velocities in the core and cladding.
The comparison of waveguide dispersion characteristics with symmetric ([d.sub.3]= [d.sub.5]=2 mm) and asymmetric ([d.sub.3]=3.5 mm, [d.sub.5]=0.5 mm) location of holes inside of semiconductor substrate shows that especially considerably changes the losses' behavior.