A plane-polarized laser wave with a wavelength of illuminates a cladding optical fiber with a diameter of about at normal incidence. A measured angular distribution of the intensity of the scattered wave corresponds well with the differential cross section of a rigorous theoretical calculation of a coaxial double cylinder over a wide range of scattering angle. The diameter and refractive index of the cladding and core of the illuminated part of a fiber have been determined accurately for each uncertainty.
© 2009 Optical Society of America
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