[Matteo, Eleonora]

We used the code that simulates the homodyne spectrum for FDS at differente angles (entry #1774) and tried to optimize the angle to fit the data of our last FDS measurement (entry #1751)

The results in the attached figure show a quite good agreement between data (solid line) and simulation (dotted line)  

The degradation parameters used in the code are the following:

sqz_dB = 16;                         % produced SQZ

L_rt = 100e-6;                       % FC losses

L_inj = 0.33;                        % Injection losses

L_ro = 0.11;                         % Readout losses

A0 = 0.1;                            % Squeezed field/filter cavity mode mismatch losses

C0 = 0.05;                           % Squeezed field/local oscillator mode mismatch losses

ERR_L =   5e-12;                     % Lock accuracy [m]

ERR_csi = 80e-3;                     % Phase noise[rad]

det =  50.62e3;                      % detuning frequency 

int = 2e3;                           % frequency range = det+/-int   

t_in_q   = 0.0014;                   % input mirror transmission 

gamma_fc = ((t_in_q + L_rt)/2)*fsr;  % = 59.6*2*pi