Patent ID: 6600148
Filing Date: 2003-07-29
Classification: G01M

Abstract:
A polarization mode dispersion measuring method comprising the steps of:applying a polarization mode dispersion to a linearly polarized beam extracted from a light having substantially uniform spectrum, with a reference object having a predetermined polarization mode dispersion value; making the light applied with the predetermined polarization mode dispersion value incident to one end side of a measured object while rotating a polarization plane of the light, and detecting at least one of a maximum value and a minimum value of a polarization mode dispersion value generated from a spectrum of a linearly polarized beam emitted from the other side of the measured object following the rotation of the polarization plane of the light; and calculating a polarization mode dispersion value of the measured object by using any two values among the predetermined polarization mode dispersion value, the maximum value of the polarization mode dispersion value, and the minimum value of the polarization mode dispersion value.