Polarization mode dispersion measuring device, method, recording medium

摘要

A device for measuring tau_PMD includes a polarization controller ( 12 ) that allows first (second) incident light, in a synthetic incident light to an object to be measured ( 30 ), to be in line with a p-polarization (s-polarization) axis in a polarization separator ( 16 ). The phase shift equivalent value (optical angle frequency differentiation) and amplitude equivalent value (square value) of a first (second) incident light component in an output from the polarization separator ( 16 ) measured by a first (second) measuring unit ( 20 a , 20 b) are respectively the phase shift equivalent value and amplitude equivalent value of a first column T₁₁, T₂₁ (second column T₁₂, T₂₂) when the transfer function matrix of the object ( 30 ) is a 2x2 matrix to thereby allow a control unit ( 2 ) to determine the polarization mode dispersion tau_PMD of the object ( 30 ).