new plots for Diss. Mostly AI gen. Few changes in actual codebase

Functions/frequency_wavelength/calcWavelengthPlan.m

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+function channelplan_nm = calcWavelengthPlan(N, df_hz, center_nm)
+
+vec = [N:-1:1]-(N/2+0.5);
+
+channelplan_hz = nm2hz(center_nm) + (vec * df_hz) ;
+
+channelplan_nm = hz2nm(channelplan_hz);
+
+%  dfft = 1.367053998632946e+07; %hz
+%  a = diff(channelplan_hz)./2./dfft;
+
+end
+
+function hz = nm2hz(nm)
+    wavelen_in_m = nm.* 1e-9; 
+    hz =  (299792458 ./ wavelen_in_m); %frequency in Terahertz
+end
+
+function nm = hz2nm(hz)
+    m =  (299792458 ./ hz); %wavelength in meter
+    nm = m .* 10^9;
+end
+
+

Functions/frequency_wavelength/df2dw.m

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+function dw = df2dw(df,f)
+    %delta frequency to delta wavelength
+    dw = 299792458 .* df ./ f.^2;
+end

Functions/frequency_wavelength/dw2df.m

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+function df = dw2df(dw,w)
+    %delta wavelength to delta frequency
+    df = 299792458 .* dw ./ w.^2;
+end

Functions/frequency_wavelength/getSweepWavelengths.m

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+function positions = getSweepWavelengths(N, df_hz, StartNm)
+    positions = zeros(1, N);
+    for i = 1:N
+        position = (299792458 / (299792458 / (StartNm * 1e-9) + (i - 1) * df_hz)) * 1e9;
+        positions(i) = position;
+    end
+end

Functions/frequency_wavelength/hz2nm.m

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+function nm = hz2nm(hz)
+    m =  (299792458 ./ hz); %wavelength in meter
+    nm = m .* 10^9;
+end

Functions/frequency_wavelength/nm2hz.m

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+function hz = nm2hz(nm)
+    wavelen_in_m = nm.* 1e-9; 
+    hz =  (299792458 ./ wavelen_in_m); %frequency in Hertz
+end

Functions/frequency_wavelength/nm2thz.m

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+function thz = nm2thz(nm)
+    wavelen_in_m = nm.* 1e-9; 
+    thz =  (299792458 ./ wavelen_in_m) .*1e-12; %frequency in Terahertz
+end

Functions/frequency_wavelength/thz2nm.m

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+function nm = thz2nm(thz)
+    freq_in_hz = thz.* 1e12; 
+    nm =  (299792458 ./ freq_in_hz) .*1e9; %wavelength in nanometer
+end