title: Simple method of measuring scattering losses in optical fibers.
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 microm. Finally, the method was applied to a new high-numerical-aperture optical fiber to find its material scattering loss.
authors.affiliation: Central Research Laboratory, Hitachi, Ltd, Kokubunji, Tokyo, Japan. satoshin@cm.head.hitachi.co.jp
authors.forename: S
authors.initials: S
authors.lastname: Satoh
authors.forename: K
authors.initials: K
authors.lastname: Susa
authors.forename: I
authors.initials: I
authors.lastname: Matsuyama