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QSFP28 100GBASE-CWDM4 2KM
Posted on 2025-07-07

100G QSFP28 CWDM4 2KM optical transceiver is a high-speed QSFP28 module compliant with the 100GBASE-CWDM4 standard. It enables 100Gbps Ethernet data transmission over single-mode fiber (SMF) for distances up to 2 kilometers. Utilizing Coarse Wavelength Division Multiplexing (CWDM) technology, it multiplexes and demultiplexes signals on four specific wavelengths (1271nm, 1291nm, 1311nm, 1331nm). This module provides a cost-effective solution for data center interconnects (DCI) and metro access networks.


Product Features:

QSFP28-100GBASE-CWDM4-2KM●Hot-pluggable QSFP28 form factor

●Supports 103.1Gb/s aggregate bit rate

●Power dissipation < 3.5W

●RoHS-6 compliant

●Commercial case temperature range of 0°C to 70°C

●Single 3.3V power supply

●Maximum link length of 2km on Single Mode Fiber (SMF)

●4x26Gb/s CWDM Transmitter: 4 channel 1270,1290, 1310,1330nm DFB laser

●4x26G retimed electrical interface

●Duplex LC receptacles

I2C management interface


Applications

Inter-Rack Connectivity in Data Centers

●Links TOR (Top of Rack) or EOR (End of Row) switches across cabinets/racks within the same data center hall.


EOR (End of Row) Aggregation

●Aggregates traffic from multiple racks to EOR core switches or backbone networks.


Short-Reach Data Center Interconnect (DCI)

●Connects data centers within a campus or adjacent buildings ≤ 2km distance.


Metro Access & Aggregation Networks

●Provides 100G high-speed uplinks from metro edge access points to aggregation nodes.


Enterprise Core Network Upgrades

●Replaces 10G/40G links to build high-bandwidth enterprise network backbones.


Cloud Service Provider Infrastructure

●Enables cost-effective, high-density 100G server access and switching for cloud platforms.


High-Density Switch Interconnect

●Facilitates high-density 100G stacking or interconnects between QSFP28 ports on core switches/routers.


Industrial Network Backbones

●Supports reliable ≤ 2km connectivity for industrial automation and smart campuses.



Data Sheet
QSFP28-100G-CWDM4-2KM.pdf


If you are interested in the QSFP28 100GBASE-CWDM4 2KM please contact us sales@c-light.com

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