Deliver 40 GbE connectivity over longer distances with this 40GBASE-LR4 QSFP+ transceiver for Alcatel systems. Designed for single-mode fiber deployments, it is suited to backbone links, inter-building connections, and other runs where short-reach optics are not enough. The LR4 design is a strong fit when you need to preserve throughput while extending the network beyond the limits of multimode cabling. In production networks, the value of the right optic shows up in fewer compromises: cleaner link planning, better reach, and less pressure to redesign the physical layer around a cheaper part. This module supports that approach by aligning 40 GbE performance with the reach profile expected in enterprise and campus backbones. It is especially useful where uplinks must stay stable across longer spans and where compatibility with Alcatel infrastructure is part of the procurement requirement. Choose it when the network design calls for dependable long-reach 40G transport rather than a generic short-distance transceiver. For infrastructure teams, that difference can determine whether a deployment scales cleanly or becomes a cabling problem later.