Hello.
In order to create an optical component in Matlab for co-simulation with OptiSystem, first we need to understand the optical signal format that OptiSystem can generate and the structure of that signal launched into the Matlab workspace.Using the MATLAB Library, we can add a Matlab component to the layout. By clicking on the component properties, on the Main tab, we can choose the Sampled Signal in the time or frequency
domain. The number of input and output ports and also the format of these signals (Optical/Electrical) can be defined in the Inputs and Outputs tab. The User Parameter tab is used to define the input parameters of the component.
You can refer to the pdf the link of which i am attaching. I hope this will help you
https://dru5cjyjifvrg.cloudfront.net/wp-content/uploads/2015/06/Matlab-Optical-Example.pdf?51da48
This has been discussed already
http://staging.optiwave.com/forums/topic/using-matlab-with-optiwave/
Thanks