Hi Dhiman,
You can use Matlab component in external software library for the comsimulation. To co-simulate Optisystem and Matlab, you’d better get some basic understanding of the form of data in optisystem. Therefore, I suggest that you carefully go through the tutorials and videos provided for this purpose. The links to the videos and tutorials are provided in the following topic:
You can also find some of them in Matlab co-simulation folder in Optisystem samples folder.
Regards