Keep long-reach 100 GbE links compact and predictable. This AXIOM 100GBASE-LR4 QSFP28 transceiver for Alcatel-Lucent is intended for single-mode fiber deployments where stable high-speed transport is required across campus backbones, data center interconnects, and core network paths. The QSFP28 format gives you the bandwidth density modern switching platforms demand, while LR4 signaling is suited to longer optical runs than short-reach multimode options. That makes this module a strong fit when the design calls for fewer compromises: preserve rack density, extend reach, and keep the optics layer aligned with enterprise transport requirements. For teams managing refresh cycles or maintaining mixed-vendor inventories, a compatible LR4 optic can simplify sourcing without forcing a redesign of the physical layer. It is a practical choice for production links where the cost of downtime, patching complexity, or mismatched optics is higher than the price of a properly specified transceiver. When the network needs dependable 100 GbE over single-mode fiber, this module keeps the path clear.