The NTK539UH is a carrier-grade single-port 100G coherent optical line card built with Ciena WaveLogic 3 (WL3) coherent DSP technology, designed for long-haul, ultra-long-haul and inter-data-center DWDM transmission on the Ciena 6500 converged packet-optical chassis. It delivers robust 100G OTU4 transmission with enhanced electronic dispersion compensation (EDC), powerful PMD and nonlinear fiber impairment tolerance to extend unrepeated fiber reach. This hot-swappable circuit pack integrates coherent transmitter/receiver, OTN framing, signal equalization and line-side optical amplification circuits on a single blade. It supports transparent DWDM wavelength transport, multi-layer service protection, wire-speed OTN processing and seamless integration with Ciena Navigator NCS for unified network automation, telemetry and service provisioning. Widely deployed by global telecom carriers, cloud operators and submarine backbone networks for high-capacity low-latency optical transport upgrades and network expansion. Large stock available for immediate shipping. Contact us now to get a real-time quote and technical data sheet within 24 hours!