Silas work PC

eye diagram working for all signals again...
A problem: I found that the Tx eyes look weird (i.e. PAM-8)
vibecoded ML_MLSE_GPU ... a bit faster :-)

Functions/Theory/Dissertation/dispersion_around_zdw.m

@@ -0,0 +1,34 @@
+
+% plot_dispersion_models
+% ------------------------------------------------------------
+% Visualizes exact and linearized chromatic dispersion D(λ)
+% around the zero-dispersion wavelength (ZDW).
+%
+% Inputs:
+%   lambda0_nm - ZDW in nm
+%   S0         - dispersion slope at ZDW [ps/(nm^2·km)]
+% ------------------------------------------------------------
+
+lambda0_nm = 1310;
+S0 = 0.08;
+% wavelength axis around ZDW
+lambda_nm = linspace(lambda0_nm-40, lambda0_nm+40, 400);
+
+% exact dispersion model
+D_exact = (S0/4) .* ( ...
+    lambda_nm - (lambda0_nm^4)./(lambda_nm.^3) );
+
+% linearized model around ZDW
+D_lin = S0 .* (lambda_nm - lambda0_nm);
+
+% plot
+figure('Color','w'); hold on;
+plot(lambda_nm, D_exact, 'LineWidth',2, 'DisplayName','Exact model');
+plot(lambda_nm, D_lin, '--', 'LineWidth',2, 'DisplayName','Linearized model');
+
+xlabel('Wavelength  \lambda  [nm]');
+ylabel('Dispersion  D(\lambda)  [ps/(nm·km)]');
+title('Chromatic Dispersion Around the ZDW');
+legend('Location','best');
+grid on; box on;
+

Functions/Theory/dispersion_contour.m

@@ -9,7 +9,7 @@ L      = 1;    % km
 
 % Dispersion berechnen (lineare Näherung)
 D = S0 .* ( lambda - Lambda0 ) * L;
-% D = (S0./4) .* ( lambda - (Lambda0.^4)./(lambda^3) ) * L;
+D = (S0./4) .* ( lambda - (Lambda0.^4)./(lambda^3) ) * L;
 
 %% 2D-Konturplot nur mit Linien und Text
 figure('Color','w');