AFL’s DWDM Cassette Modules provide scalable wavelength management for new deployments and network upgrades, providing increased bandwidth over a single common fiber. Passive circuit design utilizes proven thin-film filter technology featuring low insertion loss, high isolation, and superior environmental stability. Cassettes can be installed in OSP splice closures or cabinets and are available with 900 µm in select configurations from 4 to 40 channels. Test ports can be factory terminated with SC connectors for plug-and-play field optical testing.