Patent ID: 7009691

Claim:
A combined interferometric and polarimetric system for performing measurements on a device under test comprising: a first interferometer arm having a first end and a second end; a second interferometer arm having a first end and a second end; a tunable laser source for generating a light beam, said tunable laser source being optically coupled to said first end of said first interferometer arm and to said first end of said second interferometer arm; and a polarimeter optically coupled to said second end of said second interferometer arm to receive a second portion of said light beam and selectively optically coupled to said second end of said first interferometer arm to selectively receive a first portion of said light beam, said polarimeter being configured to generate an electrical signal responsive to an intensity signal resulting from the detection of said first portion and said second portion of said light beam when said device under test is inserted between said first end and said second end of said second interferometer arm.