public static double[] DGD(string j1, string j2, double w1, double w2)
{
double[] jValues1 = JonesString2Double(j1);
double[] jValues2 = JonesString2Double(j2);
JonesMatPol mat1 = JonesDoubleArray2JonesMat(jValues1);
JonesMatPol mat2 = JonesDoubleArray2JonesMat(jValues2);
JonesMatCar J1 = CMath.Pol2Car(mat1);
JonesMatCar J2 = CMath.Pol2Car(mat2);
JonesMatCar J1Inv = CMath.Inverse(J1);
JonesMatCar J2_J1Inv = J2 * J1Inv;
ComplexCar[] complexCars = CMath.Eigenvalues(J2_J1Inv);
ComplexPol[] complexPols = new ComplexPol[2];
complexPols[0] = CMath.Car2Pol(complexCars[0]);
complexPols[1] = CMath.Car2Pol(complexCars[1]);
double Ang = complexPols[0].ang - complexPols[1].ang;
double f1 = Wavelength2Frequency(w1);
double f2 = Wavelength2Frequency(w2);
double[] DGD_W = { CMath.Abs(Ang / (f1 - f2)), (w1 + w2) / 2 };
return(DGD_W);
}
public static JonesMatPol Car2Pol(JonesMatCar jonesMatCar)
{
JonesMatPol jonesMatPol;
jonesMatPol.J11 = Car2Pol(jonesMatCar.J11);
jonesMatPol.J12 = Car2Pol(jonesMatCar.J12);
jonesMatPol.J21 = Car2Pol(jonesMatCar.J21);
jonesMatPol.J22 = Car2Pol(jonesMatCar.J22);
return(jonesMatPol);
}
public static void Print(JonesMatCar mat)
{
Print(mat.J11);
Console.Write(" ");
Print(mat.J12);
Console.WriteLine();
Print(mat.J21);
Console.Write(" ");
Print(mat.J22);
Console.WriteLine();
}
public static ComplexCar[] Eigenvalues(JonesMatCar jonesMatCar)
{
ComplexCar[] complexCar = new ComplexCar[2];
ComplexCar a = (jonesMatCar.J11 + jonesMatCar.J22);
ComplexCar b = Sqrt((a * a) + (4 * ((jonesMatCar.J12 * jonesMatCar.J21) - (jonesMatCar.J11 * jonesMatCar.J22))));
complexCar[0] = (a + b) / 2;
complexCar[1] = (a - b) / 2;
return(complexCar);
}
public static JonesMatCar Inverse(JonesMatCar jonesMatCar)
{
JonesMatCar JInv;
ComplexCar JDet = Det(jonesMatCar);
JInv.J11 = jonesMatCar.J22 / JDet;
JInv.J12 = (-1 * jonesMatCar.J12) / JDet;
JInv.J21 = (-1 * jonesMatCar.J21) / JDet;
JInv.J22 = jonesMatCar.J11 / JDet;
return(JInv);
}
public static ComplexCar Det(JonesMatCar jonesMatCar)
{
return((jonesMatCar.J11 * jonesMatCar.J22) - (jonesMatCar.J12 * jonesMatCar.J21));
}
