Viavi Solutions 41DWDMC DWDM C-Band Tunable OTDR Module

The Viavi 41DWDMC DWDM C-Band Tunable OTDR Module is a plug-in fiber OTDR for fiber optic network testing that characterizes optical links, locates faults, and verifies performance across the C-band. It covers 1528 to 1568 nm on single-mode fiber and includes an integrated tunable CW light source for flexible wavelength provisioning. Manufactured by Viavi (JDSU), the module carries MPN 41DWDMC and is designed for installation in T-BERD and MTS test platforms such as the 2000, 4000 V2, 5800, and OneAdvisor 800, making it suitable for telecommunications, metro networks, data centers, and optical transport systems where accurate DWDM testing is required. It supports DWDM and hybrid CWDM/DWDM networks, enabling in-service fiber characterization, fault location, and network verification within telecommunications and data networks. Typical applications include testing and troubleshooting DWDM and hybrid CWDM/DWDM fiber networks in metro access, FTTH deployments, C-RAN fronthaul, and broader optical transport infrastructures, helping maintenance teams and system integrators perform precise diagnostics and wavelength provisioning.