Hi Saif

The receiver efficiency can be retrieved with POPD operands and so you could potentially optimize your system to get a good efficiency.

But I would first recommend that the propagation goes well in POP as POP is sometimes difficult to set-up, namely check that the phase is correctly sampled at each surface. Have a look at those articles to learn how to do that:

Using Physical Optics Propagation (POP), Part 1: Inspecting the beams 

Using Physical Optics Propagation (POP), Part 2: Inspecting the beam intensities

Using Physical Optics Propagation (POP), Part 3: Inspecting the beam phases

Feel free to share your file if needed (you will need to create a zip to be able to attach it)

Hi Sandrine,

Thank you for your response. I used POPD but it did not help.  I have attached my zip file, please advise. 

Sincerely

saif

Hi Saif

Sorry but the zip file only contains a ZDA file, which is a session file. The session file is about the windows you have opened, etc…

Can you save your file as a zar? This way it will save the zmx (design) as well as the session file and any needed configuration file. Thank you.

(There is an article that explains this here https://support.zemax.com/hc/en-us/articles/1500005576422-What-are-the-ZDA-and-CFG-Files-)

Hi Sandrine

Sorry for incorrect file. Now i am trying to attach but it says incorrect file type. So i am attaching zmx version and zox version. Please advise if you have problem in opening the file. 

sincerely

saif

Hi Saif!

In POP, you have entered a waist X/Y of 0.000155mm, that is 0.155um. 

If I convert this into a divergence angle that gives an angle of 72.56 degrees in X and in Y. POP displays a warning message in the propagation report:
 

And basically this can’t be modelled with POP as it breaks the algorithm assumptions behind POP: 

It seems like this can be solved with Lumerical though. I can put you in contact with one of our Lumerical engineers if you need.

Let me know if I misunderstood.