说明：  Matlab component,Creating a component to handle optical signals in Optisystem
(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. Following is an example to create an Optical Attenuator using the Matlab component. In this example, first we introduce the signal format in OptiSystem, and then we show how to use Matlab to process that signal. )