Patent ID: 7397542
Filing Date: 2008-07-08
Classification: G01M

Abstract:
1. A method for determining mode spectra of an optical property of a device under test—DUT—in dependence on a spectral parameter, with said mode spectra corresponding to the device's principal states of polarization—PSPs—,the method comprising: determining minimum envelope values and maximum envelope values of said optical property, or other measured values from which said envelope values can be determined with respect to possible state of polarization of light that is incident upon said DUT, whereby said minimum envelope values and said maximum envelope values are determined for a spectral range of interest of said spectral parameter; deriving the mode spectra of said optical property for at least one of the PSPs as a function of said spectral parameter for said spectral range of interest, whereby a partial correspondence of said mode spectra with said minimum and maximum envelope values is used for deriving said mode spectra.