M           = wh.parameter.M.values(1);
datarates    = wh.parameter.datarate.values;
rop         = wh.parameter.rop.values;

clear("sens_ffe")

col = flip(cbrewer2("RdYlGn",numel(datarates)));

cnt = 1;
for dr = datarates

    ber_ffe          = wh.getStoValue('ber_ffe',M,dr,rop);

    sens_ffe(cnt)    = getIntersection(ber_ffe,rop);

    figure(116)
    hold on
    plot(rop,ber_ffe,"LineWidth",0.5,"LineStyle","-","Marker",".","MarkerSize",15,"DisplayName",['Postfilter + MLSE;  ',num2str(dr), ' Gbps'],'Color',col(cnt,:));
    yline(3.8e-3,'DisplayName','HD-FEC','LineStyle','--','HandleVisibility','off');
    xlabel('Received Optical Power (dBm)');
    ylabel('Bit Error Rate (BER)');
    title('Bit Error Rate vs. ROP');
    set(gca,'yscale','log');
    set(gca,'Box','on');
    grid on;
    grid minor
    legend

    cnt = cnt+1;

end


figure(22);
hold on; % Retain the plot so new points can be added without complete redraw
plot(datarates,sens_ffe,"LineWidth",1,"LineStyle","-","Marker",".","MarkerSize",10,"DisplayName",['Linewidth: ',num2str(laser_linewidth.*1e-6),' MHz']);
xlabel('Signal to Interference Ratio (dB)');
ylabel('Receiver Sensitivity');
title(['Bit Error Rate vs. SIR']);
grid on;
legend


function i = getIntersection(ber,rop)

%get intersection between rop curve and hd-fec limit
hdfec = 3.8e-3 .* ones(size(ber));
i = InterX([rop;hdfec'],[rop;ber']);

if isempty(i)
    i = NaN;
else
    i = i(1);
end
end