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Simple method of measuring scattering losses in optical fibers
Authors:Satoh S  Susa K  Matsuyama I
Affiliation:Central Research Laboratory, Hitachi, Ltd, Kokubunji, Tokyo, Japan. satoshin@cm.head.hitachi.co.jp
Abstract:
A simple method of measuring the scattering losses of optical fibers was developed. The method permits the measurement of the scattering-loss spectra by use of photon counting. Measurement is based on right-angle scattering, which is dominated by Rayleigh scattering, a material-intrinsic loss. A reference fiber for which the scattering loss is known is used to cancel out the unknown factors that are dependent on the optical setup. The scattering-loss measurement was demonstrated by use of two different low-loss fibers and was found to agree with predetermined figures to within 10% over the wavelength range 0.44-1.0 mum. Finally, the method was applied to a new high-numerical-aperture optical fiber to find its material scattering loss.
Keywords:
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