Patent ID: 6380533
Filing Date: 2002-04-30
Classification: G01M,G02B

Abstract:
A method for testing the performance of an optical device under test using a first and second pair of light beams, wherein each of said pairs of light beams comprises a first light beam having a frequency &ohgr;n and a second light beam having a frequency &ohgr;n+&Dgr;&ohgr;fn, wherein n denotes the particular pair, wherein &Dgr;&ohgr;fn may be either positive or negative, and wherein a first frequency of an (n+1)th pair of light beams is different from the first frequency of an nth pair of light beams by a second frequency interval &Dgr;&ohgr;in, wherein &Dgr;&ohgr;in may be either positive or negative, and wherein |&Dgr;&ohgr;in|fn| and |&Dgr;&ohgr;in|f(n+1)|, said method comprising the step of:determining a polarization mode dispersion vector to at least a first order of said optical device under test using light beams passed therethrough.