The Ciena 130-0017-904 Multiwave DL Selector is a precision optical component that selects specific wavelengths. It lists two targets at 192.5 THz and 192.7 THz, corresponding to 1557.4 nm and 1557.5 nm. Part number 130-0017-904 identifies this Multiwave DL Selector and the two downlink wavelengths it handles.
