Optical Transceiver Module CBO QSFP28-100G-LR4-DE 100G LR4, QSFP28 4x25G, single-mode, long-reach

The Optical Transceiver Module CBO QSFP28-100G-LR4-DE is a QSFP28 form-factor module engineered for 100 Gigabit Ethernet LR4 links. It aggregates four 25G lanes into a single QSFP28 interface and operates over single-mode fiber to deliver long-reach connectivity for data centers, carrier networks and metro applications. The module supports standard LR4 transmission characteristics, enabling high-capacity uplinks and connections between aggregation and core network nodes while simplifying fiber infrastructure upgrades.

Advantages

This QSFP28 100G LR4 module offers compact QSFP28 packaging with four independent 25G channels for efficient use of port density and reduced rack space. Using single-mode optics for long-reach performance, it enables stable transmission over extended distances and is suitable for carrier-class deployments. Compatibility with 100 Gigabit Ethernet LR4 makes it interoperable with standard switches, routers and optical equipment that accept QSFP28 LR4 optics.

Suitable for

• 100G uplinks between aggregation and core switches in data centers
• Long-reach metro and carrier links over single-mode fiber
• High-capacity interconnects between colocation sites
• Network upgrades where migration from multiple 10/25G links to 100G is required

Key specifications

• Data rate: 100 Gbps aggregated via 4 × 25 G lanes
• Form factor: QSFP28
• Fiber type: single-mode fiber
• Reach: long-reach class suitable for metro and carrier distances over single-mode fiber
• Optical interface: LR4 wavelength multiplexing for four channels
• Connector type: standard duplex LC (or compatible MPO-LC interface depending on host transceiver cage)

How to use

Install the QSFP28 module into a compatible QSFP28 port on switches, routers or optical transport equipment following standard hot-plug procedures. Ensure the host device supports 100G LR4 optics and configure the port for 100 Gigabit Ethernet operation as required by your network. Use appropriate single-mode fiber cabling and LC/APC or host-compatible MPO adapters to connect to the remote transceiver. Monitor link status via the host device and verify signal integrity using available diagnostic functions.

Usage recommendations

Use factory-tested single-mode fiber and maintain proper cable cleanliness to ensure signal quality. Verify optical budgets and link distances before deployment and consult the host equipment compatibility list for confirmed interoperability with QSFP28 LR4 modules.