Finisar SFP+ Module – 25GBase-X Single-Mode Fiber, 1310 nm

The Finisar SFP+ Module is engineered to empower modern data networks with high-speed, reliable 25G Ethernet connectivity in a compact, hot-pluggable form factor. Designed for data centers, campuses, and enterprise networks, this transceiver delivers the speed demanded by today’s workloads while preserving signal integrity over long-reach single-mode fiber. With a 1310 nm wavelength optimized for single-mode 9/125 µm fiber, an LC duplex optical interface, and support for 25GBase-X standards, the module is purpose-built for scalable, low-latency networks. Finisar’s reputation for optical precision and durability translates into a transceiver that not only meets today’s bandwidth requirements but also offers a future-ready foundation as networks migrate toward higher speeds and greater densities. The hot-pluggable SFP+ design minimizes downtime during upgrades and maintenance, keeping critical paths in service and maximizing productivity in demanding data-center environments.

• The Finisar SFP+ Module delivers high-performance 25GBase-X connectivity with a data rate up to 25.78 Gbit/s, making it an ideal choice for next-generation data centers and enterprise networks seeking to scale beyond 10G and 40G links. Its 25G Ethernet compatibility ensures seamless integration with current switches, routers, and storage fabrics that support 25G uplinks, enabling smoother upgrade paths and improved overall network efficiency. The 1310 nm optical wavelength is optimized for long-haul, single-mode fiber applications, preserving signal integrity across substantial distances and reducing error rates in dense deployments. The duplex LC interface is the standard for modern optical links, providing straightforward cabling and broad compatibility with widely available fiber components and patch panels. In practice, this translates to higher throughput, lower latency, and the agility to support bandwidth-intensive workloads such as virtualization, real-time analytics, and cloud-scale storage replication.
• Built for long-distance performance, the module uses 1310 nm light and 9/125 µm single-mode fiber to minimize attenuation and dispersion over extended links. This combination is specifically chosen to maximize reach without compromising signal quality, making it well-suited for inter-building connections, data-center backbone links, and campus networks. The LC duplex connection supports standard fiber cabling widely used in data centers, enabling rapid deployment with existing inventory. The result is a transceiver that can deliver reliable, high-speed performance from the edge to the core, supporting workloads that demand consistent bandwidth and predictable latency—essential for virtualized environments, distributed storage systems, and high-performance computing clusters.
• Reliability and ease of maintenance are at the heart of the Finisar SFP+ Module. As a hot-pluggable SFP+ device, it allows field replacements and upgrades to be performed without powering down the host equipment, reducing maintenance window downtime and keeping critical services online. The robust construction, precision optics, and adherence to industry standards deliver dependable operation in high-availability networks. In busy data centers, where uptime is paramount, the ability to swap transceivers quickly and safely supports faster refresh cycles and cleaner lifecycle management, all while preserving link integrity and service continuity.
• Versatility across diverse applications is a key strength of this transceiver. It is designed for data-center uplinks, spine-leaf fabric interconnects, and distribution links, as well as enterprise backbones that require sturdy, high-speed connections. The 25GBase-X specification enables efficient scaling from existing 10G environments, with a clear path to 25G upgrades across multiple nodes and racks. The reach of up to 6561.68 ft (approximately 2000 meters) offers design flexibility to position essential network devices in optimal locations, reducing cable complexity and improving airflow and cable management in dense racks. This adaptability makes the Finisar SFP+ Module a practical, future-proof solution for hybrid networks that mix traditional and next-generation interfaces.
• With Finisar's established reputation for optical components and a broad ecosystem of supported devices, this SFP+ module benefits from wide vendor compatibility and robust post-sale support. It integrates smoothly into multi-vendor environments, reducing compatibility testing time and mitigating integration risk during upgrades. The combination of a 25.78 Gbit/s data rate, 1310 nm single-mode operation, LC duplex interface, and hot-pluggable SFP+ form factor creates a flexible, scalable foundation for networks evolving toward higher bandwidths, while preserving investment in existing infrastructure and accelerating the deployment of high-speed services across data centers and enterprise networks.

Technical Details of Finisar SFP+ Module

• Form factor: SFP+ hot-pluggable transceiver
• Data rate: 25.78 Gbit/s
• Wavelength: 1310 nm
• Fiber type: Single-mode, 9/125 µm
• Connector: LC duplex
• Max distance: 6561.68 ft (approximately 2000 meters)
• Standards: 25GBase-X / 25 Gigabit Ethernet

How to install Finisar SFP+ Module

• Verify compatibility: Ensure your switch, router, or network device supports 25GBase-X SFP+ and that an LC duplex fiber link is appropriate for the intended path.
• Prepare fiber cabling: Use single-mode fiber (9/125 µm) with LC duplex connectors and ensure the fiber is clean, undamaged, and properly terminated.
• Power considerations: Although the SFP+ module is hot-pluggable, follow your device manufacturer's guidelines for installation, including ESD precautions and ensuring the system is within allowed operating conditions.
• Install the module: Gently align the transceiver with the appropriate SFP+ slot and insert until it seats firmly with a click. Do not force the module; if it does not seat, remove and reinsert.
• Connect the fiber: Attach the LC duplex patch cord to the module and route fibers to the corresponding transceiver. Ensure proper polarity (transmit to receive) and avoid sharp bends or excessive tension on the fiber.
• Verify link status: Power on or resume operation and check the device management interface or status LEDs for an established link. Validate throughput with a baseline test to confirm the expected performance.
• Maintenance and handling: Protect the transceiver and fiber connectors from dust, moisture, and static discharge. When not in use, cover fiber connectors and store spare cables properly.

Frequently asked questions

• What is the Finisar SFP+ Module used for? It is a high-speed transceiver designed for 25GBase-X Ethernet links, enabling fast, scalable connectivity between data center devices, switches, routers, and storage networks using single-mode fiber.
• What type of fiber does it use? It uses single-mode fiber with a 9/125 µm specification, optimized for long-distance transmission with reduced attenuation and dispersion at 1310 nm.
• What connector does it use? It features an LC duplex optical connector, a standard for many data-center and enterprise fiber deployments.
• What is the maximum transmission distance? The maximum reach is up to 6561.68 ft, which is approximately 2000 meters, depending on fiber quality and link design.
• Is this transceiver hot-pluggable? Yes. The Finisar SFP+ Module is designed to be hot-pluggable, allowing installation and replacement without powering down the host device in compliant environments.
• What workloads is it best suited for? It is ideal for backbone links, data-center interconnects, high-speed uplinks, virtualization, NVMe-oF storage networks, HPC clusters, and other bandwidth-intensive applications that require reliable 25G performance.