Many changes here and there. I lost track... :-(
Current work is on MLSE and SD Decoding etc. MLSE is currently not 100% working, the scalings are maybe off?!
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54
Functions/Theory/dispersion_contour.m
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54
Functions/Theory/dispersion_contour.m
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% Gitter für lambda0 und S0
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lambda0_vec = linspace(1300,1320,200);
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S0_vec = linspace(0.06,0.1,200);
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[Lambda0, S0] = meshgrid(lambda0_vec, S0_vec);
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% Festen Betriebsparameter
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lambda = 1293; % nm
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L = 10; % km
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% Dispersion berechnen (lineare Näherung)
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D = S0 .* ( lambda - Lambda0 ) * L;
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%% 2D-Konturplot nur mit Linien und Text
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figure('Color','w');
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hold on
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% Konturlinien
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numLevels = 10;
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levels = linspace(min(D(:)), max(D(:)), numLevels);
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[C,h] = contour(S0, Lambda0, D, levels, ...
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'LineWidth',1.5, ...
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'ShowText','on', ...
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'LabelFormat','%0.1f');
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% cbrewer2-Colormap für die Linien
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cmap = cbrewer2('div','RdYlGn', numLevels);
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colormap(cmap);
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% Achsenlinien
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% yline(1310, '--k','ZDW_{mean}','LabelVerticalAlignment','top','LabelHorizontalAlignment','center');
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x0 = 0.09;
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% xline(x0, '--k','S_{0}','LabelHorizontalAlignment','left');
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% Gaussian auf der x-Linie (S0 = 0.09)
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mu_zwd = 1310; % nm
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sigma_zwd = 2; % nm
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zwd_vals = linspace(min(lambda0_vec), max(lambda0_vec), 500);
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% PDF berechnen
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gauss_pdf = (1/(sigma_zwd*sqrt(2*pi))) * exp(-0.5*((zwd_vals-mu_zwd)/sigma_zwd).^2);
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% Normieren und auf eine sichtbare Breite skalieren
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scale = 0.005; % passt die Maximal-Auslenkung in x-Richtung an
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x_gauss = x0 + (gauss_pdf/max(gauss_pdf)) * scale;
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% Plot
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% plot(x_gauss, zwd_vals, 'LineWidth',2);
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% Achsenbeschriftung & Titel
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% Achsenbeschriftung & Titel
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xlabel('S0 [ps / nm2 km]', 'FontSize', 12);
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ylabel('ZDW [nm]', 'FontSize', 12);
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title (sprintf('Dispersion: %d km; %d nm', L, lambda), 'FontSize', 14);
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grid on
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hold off
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