Patent ID: 6798510
Filing Date: 2004-09-28
Classification: G01M

Abstract:
A polarization dependent loss measuring apparatus comprising:wavelength dependent measurement member for measuring transmitted light from a measured object while changing a wavelength of light incident on the measured object, peak wavelength detection member for detecting a wavelength at the time when a level of loss or gain of the transmitted light becomes maximum based on a measurement result by said wavelength dependent measurement member, polarization dependent loss measurement member for measuring polarization dependent loss of the measured object by measuring the transmitted light from the measured object while launching light of a wavelength detected by said peak wavelength detection member into the measured object and also randomly changing a polarization state of the light, measurement result processing member for performing association processing of a measurement result by said polarization dependent loss measurement member with a detection result by said peak wavelength detection member, and output member for outputting a processing result by said measurement result processing member.