hello amit garg,,,
i hope that zulkarnain`s reply was satisfactory one…
for more information kindly refer the below link…
https://fenix.tecnico.ulisboa.pt/downloadFile/3779571242940/OptiSys_Design%20-%20Component%20Library.pdf
http://optolab.utko.feec.vutbr.cz/wp-content/uploads/NIMT2011.pdf
with regards