Cisco DWDM-SFP-4056 1540.56nm Optical Transceiver Module
Cisco DWDM-SFP-4056 is a wavelength-specific Dense Wavelength Division Multiplexing SFP transceiver operating at 1540.56nm on a 100GHz ITU grid, designed for scalable optical transport networks, metro fiber expansion, and high-capacity backbone infrastructure modernization.