400G QSFP-DD ZR+ DCO Coherent Optical Transceiver OpenZR+ 450km DWDM Module

• Supports 400Gbps coherent optical transmission over single-mode fiber
• Compliant with OpenZR+ and QSFP-DD MSA standards
• Supports long-distance transmission up to 450km
• Uses advanced Digital Coherent Optics (DCO) technology
• Supports multiple modulation formats:
  • DP-QPSK
  • DP-8QAM
  • DP-16QAM
• Full C-band tunable wavelength operation
• Supports DWDM flexgrid network architectures
• Integrates Nano-ITLA tunable laser technology
• Uses integrated coherent receiver (ICR) for high-performance signal recovery
• Supports 4 × 100G PAM4 retimed 400GAUI-4 electrical interface

• 400G DWDM optical transport networks
• Data Center Interconnect (DCI)
• Metro optical networks
• Long-haul transmission systems
• Telecom carrier backbone networks
• Cloud service provider networks
• High-capacity enterprise backbone infrastructure
• Next-generation coherent optical platforms

FiberMania provides OEM and customized coherent optical transceiver solutions for telecom operators, data center providers, and optical network equipment manufacturers. Customization options include firmware configuration, wavelength tuning parameters, network management customization, product labeling, packaging solutions, and platform compatibility optimization.

For large-scale DWDM deployments, we support application-specific customization including modulation format selection, transmission performance testing, interoperability verification with optical line systems, thermal optimization, and network environment validation.

What is the difference between OpenZR+ and traditional ZR optical modules?

OpenZR+ extends the capabilities of standard ZR solutions by supporting multiple modulation formats, flexible baud rates, and a wider range of transmission distances. It provides greater flexibility for metro, regional, and long-haul network applications compared with fixed ZR modules.

How far can the 400G QSFP-DD ZR+ DCO module transmit?

The module supports transmission distances up to 450km depending on factors such as fiber quality, optical amplification, dispersion management, modulation format, and network conditions. Higher-order modulation formats typically provide higher capacity with shorter reach, while lower-order modulation formats provide longer transmission distances.

Why does this module use coherent optical technology?

Coherent technology enables the transmission and recovery of high-capacity optical signals by using advanced digital signal processing. Compared with direct-detection solutions, coherent optics provide significantly improved spectral efficiency and longer transmission capability for DWDM networks.

What is the advantage of C-band tunability in this transceiver?

C-band tunability allows the module to operate on different DWDM wavelengths without requiring separate fixed-wavelength versions. This improves network flexibility, simplifies inventory management, and enables dynamic wavelength allocation in optical transport systems.

Can this module be used for Data Center Interconnect applications?

Yes. The 400G QSFP-DD ZR+ DCO module is well suited for DCI applications where high-capacity links are required between geographically distributed data centers. Its long reach, coherent technology, and DWDM compatibility make it suitable for metro and regional interconnection networks.