Experimental Verification of Transient Control in Multi-Band Optical Networks
Ensuring stable performance in multi-band optical networks requires robust transient control mechanisms, especially when traffic disruptions lead to channel drops. In such scenarios, amplifiers must dynamically adjust their gain and tilt to maintain error-free transmission for surviving channels. Recent experimental verifications under the B5G-OPEN initiative highlight how these adjustments can be implemented effectively.
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Figure 1: Tilt and gain adjustment in a C+L–band system when dropping an equal share of the channels in both bands.
Figure 2: Output power per band normalized to the total launch power and represented in logarithmic units for a C+L–band system for three different drop scenarios. The three scenarios are illustrated for three channels in the depopulated L–band.