Fiber optic transceiver CBO QSFP-100G-CWDM4 QSFP28 100 Gbps CWDM4

The CBO QSFP-100G-CWDM4 QSFP28 100 Gbps CWDM4 fiber optic transceiver is a module designed for 100 Gbit/s links over single-mode fiber using coarse wavelength division multiplexing (CWDM4). It supports four optical lanes combined into a single duplex LC connection to provide a compact, hot-pluggable interface for high-density 100G uplinks and interconnects in data center and carrier environments. The module is compatible with QSFP28 ports on switches, routers and other networking equipment that accept QSFP28 form-factor transceivers.

Advantages

This transceiver offers high aggregate bandwidth in a compact QSFP28 package, enabling space-efficient deployment of 100 Gbps links. CWDM4 multiplexing reduces fiber count by carrying multiple wavelengths over one single-mode fiber pair, simplifying cabling and reducing infrastructure cost for medium-range connections. The hot-pluggable form factor and industry-standard electrical and optical interfaces facilitate rapid installation and replacement without powering down equipment.

Suitable for

• 100G uplinks between top-of-rack and aggregation switches in data centers
• Inter-rack and inter-pod connections within campus and carrier networks
• High-capacity links for core and distribution layers in network fabrics
• Upgrading legacy 10/40G links to 100G where single-mode fiber is available

Key specifications

• Interface: QSFP28 form factor, hot-pluggable
• Data rate: 100 Gbit/s aggregate (4 × 25 Gbit/s lanes)
• Optical technology: CWDM4 wavelength division multiplexing
• Fiber type: Single-mode fiber (SMF), duplex LC connector
• Typical reach: medium-range multimode for CWDM4 over SMF (industry typical distances for CWDM4)
• Operating conditions: standard telecommunication temperature and humidity ranges (check device label for exact ranges)

How to use

Insert the QSFP28 transceiver into a compatible QSFP28 port until it seats securely, then connect a duplex LC single-mode fiber cable that matches the CWDM4 channel plan. Ensure the host device is configured for 100G operation and that link settings (such as auto-negotiation or fixed rate) are appropriate for the connected equipment. Replace or remove the module using the vendor-recommended extraction procedure to avoid damage to the port or module.

Usage recommendations

Verify compatibility with your switch or router vendor and confirm supported 100G CWDM4 optics in the equipment’s transceiver compatibility list. Use clean, industry-standard single-mode LC connectors and follow proper fiber handling and ESD precautions. For reliable performance, measure link loss and ensure the fiber link budget meets CWDM4 requirements for your intended distance.