The number of modes decreases as the wavelength increases. because shorter wavelengths experience a higher refractive index contrast between the core and cladding, which results in a larger number of modes that can propagate in the fibre.Select one:TrueFalse

as radius of fiber increases the number of modes ________

Dispersion-shifted single mode fibers are created by __________a.Decreasing fiber core diameter and decreasing fractional index differenceb.Decreasing fiber core diameter and increasing fractional index differencec.Increasing fiber core diameter and increasing fractional index differenced.Increasing fiber core diameter and decreasing fractional index difference

as radius of fiber increases the number of modes __________Select one:a. decreaseb. not dependentc. increased. remains same

When more than one mode is propagating in an optical fiber, it is dispersed due to1 pointmaterial dispersionwaveguide dispersionall of these.intermodal dispersion

How the numerical aperture (NA) of an optical fibre is related tothe refractive index of core and relative refractive index difference(delta) between core and cladding?