https://www.synopsys.com/photonic-solutions/product-applications/optical-networks/optsim-dwdm-ring.html
DWDM Ring with OADM (Optical Add-Drop Multiplexer) Nodes | Synopsys
This example demonstrates an OptSim design for DWDM ring with Optical Add-Drop Multiplexers (OADM).
optical add drop multiplexerdwdmringoadmnodes