Update April

Classes/02_optical/EML.m

@@ -14,6 +14,7 @@ classdef EML
         bias 
         u_pi
         randomkey
+        randomstream
 
         %on instance creation
         field
@@ -49,6 +50,8 @@ classdef EML
                 obj.(fn{l}) = options.(fn{l});
             end
 
+            obj.randomstream = RandStream('mlfg6331_64','Seed',obj.randomkey);
+
             obj.field=sqrt(10^(obj.power/10-3)); %dbm to sqrt(mw)
             
             obj.noisefactor=sqrt(2*pi*obj.linewidth/obj.fsimu);
@@ -105,8 +108,9 @@ classdef EML
         end
 
         function noi = createPhaseNoise(obj)
+
             %create random vector
-            noi = randn(obj.signal_len/2,1);
+            noi = randn(obj.randomstream,obj.signal_len,1);
 
             %scale with noisefactor
             noi = noi * obj.noisefactor;
@@ -114,9 +118,6 @@ classdef EML
             %cumsum to accumulate noise over time vector
             noi = cumsum(noi);
 
-            noi = [noi ; flip(noi)];
-
-
         end
 
         function modulated_laserfield = externalmodulation(obj,laserfield,electrical_in)