200G QSFP-DD 2×CWDM4 Optical Transceiver 2km Dual LC SMF 2×100G Ethernet Module

• Supports 200Gbps total bandwidth with dual 100G Ethernet transmission
• Based on 2×100GBASE-CWDM4 optical architecture
• Supports up to 2km transmission over G.652 single-mode fiber
• QSFP-DD high-density pluggable form factor for advanced network platforms
• Converts 8 × 25Gb/s NRZ electrical lanes into 8 CWDM optical channels
• Uses CWDM4 wavelength technology for efficient optical transmission
• Integrated DFB laser transmitters and PIN photodetector receivers
• Dual Duplex LC optical interfaces for independent 100G links
• Integrated TX/RX CDR with bypass support for signal integrity optimization
• Supports Digital Diagnostic Monitoring (DDM)
• CMIS V4.0 compliant management interface

• 2×100G Ethernet switch-to-switch interconnects
• Cloud data center networks
• High-density data center optical deployments
• Enterprise backbone networks
• Data center aggregation networks
• AI and high-performance computing infrastructure
• Optical communication systems requiring dual 100G connectivity
• Next-generation Ethernet switching platforms

FiberMania provides OEM and customized QSFP-DD optical transceiver solutions for data center operators, network equipment manufacturers, and system integrators. Customization options include firmware programming, CMIS configuration, EEPROM optimization, product labeling, packaging customization, and compatibility testing with different network platforms.

What does 2×CWDM4 mean in this 200G QSFP-DD module?

2×CWDM4 means the module integrates two independent 100G CWDM4 optical links inside a single QSFP-DD package. Each CWDM4 link uses four CWDM wavelengths to achieve 100Gbps transmission, providing a total aggregate bandwidth of 200Gbps.

What fiber type is required for this transceiver?

This module is designed for single-mode fiber (SMF), typically G.652 fiber. The Dual Duplex LC interfaces allow direct connection to standard duplex single-mode fiber cabling systems used in data centers and enterprise networks.

What is the advantage of using a QSFP-DD form factor for 200G applications?

QSFP-DD provides higher port density compared with traditional QSFP form factors by supporting eight electrical lanes. It allows network operators to deploy higher bandwidth solutions while maximizing switch panel space and improving overall infrastructure efficiency.

Can this module be used as two separate 100G connections?

Yes. The module is designed with two independent 100GBASE-CWDM4 optical interfaces. Each optical link can operate separately through its own Duplex LC connection, allowing flexible deployment of dual 100G connections.

Does this module support digital monitoring?

Yes. The transceiver supports Digital Diagnostic Monitoring (DDM) through the CMIS V4.0 management interface, enabling monitoring of key operating parameters such as temperature, voltage, and optical power.