Ciena NTK538EJ – 100G OTR WL3N Extended C‑Band Circuit Pack:

Key Specifications & Features

• Form Factor: 1‑slot circuit pack (CP) for Ciena 6500 Packet-Optical Platform 

• Function: 100 G OTR WL3N (optical transponder + service channel) supporting GMP (Generic Mapping Procedure) 

• Optical Interface: Single QSFP28 port (client + line side), Extended C‑Band, WL3N variant 

• HECI/CLEI Code: WOWUBD8 / WOWUBD8EAA Compatibility: Specifically for Ciena 6500 series chassis 

✅ Use Cases & Benefits

• High-Capacity Transport: Enables 100 Gb/s coherent transmission over Extended C‑Band—ideal for metro, regional, or long-haul optical networks.

• Integrated Mapping & Service Channel: MPI layer (GMP) and service channel support simplify client services and network management.

• Reduced Footprint: Combines both client and line optics into a single, space-efficient slot.

🛠️ Integration & Architecture Notes

• Fits into a Ciena 6500 chassis—consult your network architecture to ensure you have compatible slots, power, and software licensing.

• Extended C‑Band means it operates on wavelengths typically between ~1530–1565 nm, which is important for spectrum planning.

➕ Alternative Variants

If you don’t require Extended C‑Band, Ciena also offers WL3N variants in:

• Standard C‑Band (NTK538EL)

• Enhanced models (NTK538EK)
  Check whether your network requires Extended reach and which C‑Band flavor suits your system best