OPTICAL FIBER CHARACTERISTIC MEASURING DEVICE AND OPTICAL FIBER CHARACTERISTIC MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical fiber characteristic measuring device and an optical fiber characteristic measuring method capable of measuring accurately the characteristic (a distribution of polarization mode dispersion or a distribution of the magnitude of birefringence) of the optical fiber. SOLUTION: This optical fiber characteristic measuring device has a constitution wherein pulsed light is inputted into an optical fiber to be measured, and back-scattering light from the optical fiber to be measured relative to the pulsed light is detected by a light detection part, and a Stokes vector is determined and the polarization mode dispersion in the longitudinal direction is measured. The device is provided with a light source part for outputting the pulsed light having at least three kinds of different angular frequencies, and an operation part for determining the magnitude of a linearly polarized light component and the magnitude of a circularly polarized light component of a polarization dispersion vector based on the Stokes vector, and determining the polarization mode dispersion. COPYRIGHT: (C)2005,JPO&NCIPI