Bandwidth demand keeps increasing, thanks to the growing popularity of data-hungry applications such as video-on-demand, voice-over-IP (VoIP) and videoconferencing. Service providers therefore need to deploy faster, more reliable networks, using novel technologies such as reconfigurable optical add-drop multiplexers (ROADM) or 40G networks.
Reducing downtime in CWDM and DWDM networks calls for an accurate measurement of optical signal-to-noise ratio (OSNR) . However, ROADM and 40 Gbit/s networks present a new and unique challenge, as the existing OSNR measurement methods yield incorrect results.
EXFO’s WDM-Aware method is the answer to this new challenge, providing reliable i-in-band OSNR measurement on a per-channel basis.