Coherent expanded its pluggable optical line system (POLS) portfolio with a
compact QSFP-form-factor unit offering full C‑band high‑power variable‑gain
amplification. The enhanced POLS targets next‑generation 800G ZR/ZR+ coherent
modules, supports up to 32 DWDM channels per fiber pair and can carry up to 25.6
Tbps of AI data‑center traffic over 2–200 km links.