Vaman Shenoy
Ansys Employee

Hello Karthik,

Thanks for reaching out.

Based on your explanation, I am guessing that you have designed 2 optical fibers and are trying to use a light source at one end expecting it to pass the light through the fiber/light pipe. It seems like you are using Interactive Simulation here. 

The position of the source and type of source used does not seem to be very clear from the image. Would it be possible to share some more images of the setup and also the details of the kind of source and/ or the sensor you are using for this application?