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Silas Oettinghaus
2026-02-05 15:50:49 +01:00
parent 3d47813f1e
commit bc8ebc044f
6 changed files with 26 additions and 21 deletions
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6
Functions/Theory/power_fading.m
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@@ -6,7 +6,7 @@
%% Fiber and system parameters
lambda0 = 1310e-9; % zero-dispersion wavelength [m]
lambda = 1275e-9; % operating wavelength [m]
S0 = 0.08; % dispersion slope [ps/(nm²·km)]
S0 = 0.09; % dispersion slope [ps/(nm²·km)]
L = 10e3; % fiber length [m]
c = physconst('lightspeed');
@@ -26,11 +26,11 @@ H = abs(cos(phi));
%% Plot
figure('Color','w');
plot(f/1e9, 10*log10(H), 'LineWidth', 1.8);
plot(f/1e9, 10*log10(H), 'LineWidth', 1.8,'Color','black');
grid on; box on;
xlabel('Frequency [GHz]');
ylabel('Magnitude [dB]');
title(sprintf('IM/DD Power Fading |H| for λ = %.1f nm, L = %.1f km', lambda*1e9, L/1000));
title(sprintf('IM/DD Power Fading: 10 km; 1275nm', lambda*1e9, L/1000),"Interpreter","latex");
ylim([-30 0]);
%% Mark analytic first-null frequency