Patent ID: 7385706
Filing Date: 2008-06-10
Classification: G01M

Abstract:
1. A method for determining a nonlinear property of an optical device under test (DUT), the method comprising the step of: measuring a plurality of samples of a temporal electric field of a light before and after propagating the light through the optical device under test, by measuring, using a linear optical sampling, one or more temporal phase samples and corresponding one or more temporal intensity samples; wherein said measuring, using the linear optical sampling, is performed by measuring a first and a second quadrature output of an interference between the temporal electric field of the light and the electric field of a sampling light, and wherein said step of measuring the first and second quadrature outputs is synchronized with the sampling light; and wherein determining the nonlinear property of the optical device under test includes: determining a difference between the phase of one or more temporal phase samples measured before propagating the light through the optical device under test and the phase of the corresponding one or more temporal phase samples measured after propagating the light through the optical device under test and determining the nonlinear property of the optical device under test by determining a proportionality between the measured temporal intensity samples of the temporal electric field of the light and the determined corresponding phase differences.