% Initialize a structure to hold parameters
params = struct;

% Define the bias voltage range from 1.2V to 2.8V with 0.01V increments
params.v_bias = 1.2:0.01:2.8;

% Create a DataStorage object with the defined parameters
wh = DataStorage(params);

% Add a storage field for output power measurements
wh.addStorage("p_out");

% Display the total number of measurement loops to be executed
disp(['Start Measurement of ', num2str(prod(wh.dim)), ' loops...']);

% Initialize the Optical Attenuator (VOA) with specified settings
voa = OptAtten(...
    "active", [1, 0, 0, 0], ...   % Activate only the first channel
    "value", [0, 0, 0, 0], ...    % Set attenuation values to 0 dB
    "wavelength", [1310, 1310, 1310, 1310]); % Set the wavelength for each channel

% Initialize the DC Power Supply with specified settings
dcs = DC_supply(...
    "active", [1, 1], ...          % Activate the first two channels
    "voltage", [v_bias, 9]);       % Set initial voltages for channels

% Set the VOA active channels and attenuation values
voa.set('active', [1, 0, 0, 0], 'value', [0, 0, 0, 0]);

% Loop over each bias voltage value to perform measurements
for v_bias = wh.parameter.v_bias.values
    try
        % Try to retrieve existing output power measurement to avoid repetition
        p_out = wh2.getStoValue('p_out', v_bias);
        wh.addValueToStorage(p_out, 'p_out', v_bias);
    catch
        % If no existing measurement, proceed with the measurement
        
        %%%%% SET Voltages %%%%%%
        % Update the DC supply voltage for the current bias voltage
        dcs.set("voltage", [v_bias, 9]);
        
        %%%%% Measure VOA %%%%%%
        % Read the current values from the VOA
        voa.readvals();
        
        % Store the measured output power in the DataStorage object
        wh.addValueToStorage(voa.power_state(1), 'p_out', v_bias);
    end
    
    % Retrieve all stored output power measurements up to the current point
    p_out = wh.getStoValue('p_out', wh.parameter.v_bias.values);
    
    % Plot the measured output power in dBm versus the negative bias voltage
    figure(90);
    plot(-wh.parameter.v_bias.values(1:numel(p_out)), p_out, 'DisplayName', 'Measured Output Power in dBm');
    xlim([-max(params.v_bias), -min(params.v_bias)]); % Set x-axis limits
    grid on; % Enable grid for better readability
end

% After completing the measurements, retrieve all output power data
p_out = wh.getStoValue('p_out', wh.parameter.v_bias.values);

% Plot the output power converted from dBm to linear scale (Watts)
figure(91);
plot(-wh.parameter.v_bias.values(1:numel(p_out)), db2pow(p_out), 'DisplayName', 'Measured Output Power in Watts');
xlim([-max(params.v_bias), -min(params.v_bias)]); % Set x-axis limits
grid on; % Enable grid for better readability