Accortec 40GBASE-LRL4 QSFP+ Optic, Up to 1km Over Duplex SMF

The Accortec 40GBASE-LRL4 QSFP+ Optic is a high-performance optical transceiver designed to meet the demanding needs of modern data centers, cloud infrastructures, and enterprise networks. Engineered for reliability and scalable performance, this module delivers up to 40 Gbps of data throughput over duplex single-mode fiber, making it an ideal choice for backbone links, inter-switch connections, and high-density fabric deployments. Built to the 40GBASE-LRL4 standard, the Accortec QSFP+ optic combines a compact form factor with robust signaling, enabling seamless upgrades from 10G to 40G without sacrificing compatibility or comfort in your existing network topology. Whether you’re consolidating links in a spine-leaf architecture or expanding your metro-scale data center, this transceiver provides a dependable, long-reach solution that fits a wide range of vendor ecosystems and equipment inventories.

• The Accortec 40GBASE-LRL4 QSFP+ optic is designed to deliver a true 40 Gbps aggregate data rate by harnessing four parallel 10 Gbps channels within a single QSFP+ enclosure, enabling efficient use of fiber infrastructure and simplifying cabling strategies in dense data-center environments. This multi-lane approach helps maximize port density on high-performance switches while maintaining reliable operation across long-reach links. It is purpose-built for duplex single-mode fiber, ensuring compatibility with standard SMF backbones and common transceiver mux/demux architectures used in data-center interconnects. With optimized optics and signal integrity, you gain improved link budgets, lower bit error rates, and predictable performance across varying optical loss budgets, temperatures, and fiber conditions.
• Designed for modern data centers and enterprise networks, this optic is ideal for applications that require high-bandwidth interconnects between top-of-rack (ToR) switches, spine-and-leaf fabrics, and storage-area networks. The 40GBASE-LRL4 module supports dense, scalable deployments where space, power, and cooling are at a premium. It enables operators to extend 40 Gbps connectivity across mid-range distances without switching to more expensive or less compatible solutions. Its compact QSFP+ package fits standard switches and storage devices, allowing quick upgrades, easier maintenance windows, and streamlined fleet management across large-scale networks.
• For proactive network management, the Accortec QSFP+ optic includes built-in digital diagnostics monitoring (DDM/DOM) capabilities. This feature provides real-time visibility into critical optical parameters such as transmit and receive power, laser bias current, temperature, and overall transceiver health. With continuous monitoring, network administrators can anticipate performance degradation, schedule maintenance before problems impact service, and optimize link budgets in response to changing environmental conditions. DDM/DOM support also simplifies remote troubleshooting, enables data-driven capacity planning, and supports more precise fault isolation in complex multi-vendor environments.
• Interoperability and reliability are at the core of this transceiver. The Accortec 40GBASE-LRL4 QSFP+ optic adheres to standard QSFP+ and 40GBASE-LRL4 specifications, facilitating broad compatibility across a wide range of manufacturers and platforms. The module is designed to operate within conventional optical budgets and temperature ranges typical of data-center deployments, with rigorous pre- and post-production testing to ensure consistent performance in real-world conditions. This emphasis on standardization helps reduce procurement risk, simplify maintenance, and accelerate deployment timelines when you're expanding or upgrading your network infrastructure.
• Installation simplicity and operational efficiency are key benefits. The QSFP+ form factor is engineered for plug-and-play installation in compatible switches, routers, and optical transport devices. It supports hot-swappable deployment in many environments, enabling maintenance windows to be minimized and downtime to be kept to a minimum. The robust build quality, combined with standard optical interfaces and signaling, ensures a straightforward upgrade path—from 10G to 40G—without extensive re-architecting of cabling or equipment inventories. In practice, this means faster rollout of high-capacity links, lower total cost of ownership, and more predictable performance across your network fabric.

Technical Details of Accortec 40GBASE-LRL4 QSFP+ Optic

• Standard: 40GBASE-LRL4
• Form factor: QSFP+ (Quad Small Form-factor Pluggable Plus)
• Data rate: Up to 40 Gbps total (4 × 10 Gbps lanes)
• Reach: Up to 1 km over duplex single-mode fiber
• Fiber type: Duplex single-mode fiber (SMF)
• Connector/interface: QSFP+ module designed for standard 40G optical networks
• Diagnostics: Digital diagnostics monitoring (DDM/DOM) support for real-time health and performance visibility
• Operating conditions: Designed for data-center and telecommunications environments with typical manufacturing tolerances and reliability standards

how to install Accortec 40GBASE-LRL4 QSFP+ Optic

Before installation, ensure you have a compatible QSFP+ port and that your network equipment firmware supports 40GBASE-LRL4 transceivers. Power down the affected device if required by your maintenance policy, then proceed with the following steps to minimize downtime and ensure a proper link.

Step 1: Inspect and prepare the module. Verify the packaging, handle the optic with care to avoid contamination or physical damage, and confirm that the device you are inserting it into is powered down or in a maintenance state according to your change control procedures. Clean any dust from the optical connector area using approved methods if needed and confirm that the module is the correct type for your network path.

Step 2: Align and insert. Grasp the QSFP+ module by its edges, align it with the port, and gently insert until you feel a positive seating action. Do not force the module; if resistance is encountered, remove and reinsert it with straight, even pressure. Ensure the latch or locking mechanism is securely fastened to prevent accidental dislodgement during operation.

Step 3: Connect the optical fiber. Attach the duplex SMF fiber pair via the appropriate connectors (as specified by your cabling system) and ensure the connectors are clean. Avoid bending the fiber beyond the recommended minimum bend radius and secure any fiber trays or paths to prevent movement that could disrupt the link.

Step 4: Power up and verify. Restore power to the device and monitor the link status on the management interface. Look for a solid link light and verify that the port recognizes the 40GBASE-LRL4 transceiver. If available, check the transceiver’s DDMI/DOM readings to confirm transmit power, receive power, temperature, and bias current are within expected ranges. Run basic throughput or loopback tests if your maintenance policy requires.

Step 5: Configure and monitor. If your network requires precise settings (such as interface speed, auto-negotiation behavior, or QoS policies), apply them as per your device’s administration guides. Establish ongoing monitoring schedules to track link performance, optical power budget, and temperature, and set alerts if DDMI/DOM parameters drift outside the defined thresholds. Regular monitoring helps sustain performance and reduces the likelihood of unexpected link degradation.

Frequently asked questions

• Q: What is the Accortec 40GBASE-LRL4 QSFP+ Optic used for? A: It is a high-performance transceiver designed to deliver up to 40 Gbps over duplex single-mode fiber for data-center and enterprise network links, optimized for long-reach interconnections within 1 km and suitable for spine-leaf and backbone deployments.
• Q: What makes 40GBASE-LRL4 different from other 40G obligations? A: The LRL4 designation indicates a long-reach, four-lane configuration within a QSFP+ package, enabling reliable 40 Gbps performance over longer distances on SMF while maintaining compatibility with standard QSFP+ ports and cabling practices.
• Q: Is this transceiver compatible with multi-vendor equipment? A: Yes, it adheres to standard 40GBASE-LRL4 specifications and QSFP+ form factors, which are widely supported by a broad range of manufacturers. Always verify compatibility with your specific hardware and firmware versions.
• Q: Does it support remote diagnostics? A: Yes, the module includes digital diagnostics monitoring (DDM/DOM) to provide real-time data on power levels, temperature, and optical health, helping with proactive maintenance and faster troubleshooting.
• Q: How do I know if the link is working after installation? A: Check the port status on your switch or router management interface for a live 40G link, observe the link LED indicators, and review DDMI/DOM readings to ensure transmit/receive power and temperature are within expected ranges. Running a basic throughput test can confirm end-to-end connectivity.
• Q: Can I upgrade from 10G to 40G with this module? A: Yes, the 40GBASE-LRL4 QSFP+ optic is designed to operate in 40G-capable QSFP+ ports, offering an efficient upgrade path from existing 10G infrastructure where supported by the network hardware and cabling.