Optical design software from VPIphotonics includes a simulation tool suite

Design Suite is optical transmission system and component design software, which provides application-specific simulation and design tools with common usability, design process, and data analysis capabilities. Version 9.9 includes a simulation tool suite with over 850 demonstrations, such as probabilistic shaping, PAM-4 for interconnects, and multimode VCSEL transmission.
VPIphotonics
Berlin, Germany
vpiphotonics.com