As 5G Advanced and early 6G research push the boundaries of mobile broadband, the underlying transport network—often referred to as xHaul—is undergoing a massive transition. For network operators, the challenge is twofold: increasing bandwidth to 100G and 400G while simultaneously reducing the physical footprint and fiber consumption in remote cell sites. Selecting high-performance optics like the QSFP28 100G BIDI 80KM and the next-generation QSFP112 is now a critical requirement for maintaining low-latency carrier-grade services.
In many rural and suburban 5G deployments, fiber is a finite resource. Traditional dual-fiber links are increasingly seen as inefficient for long-distance backhaul from the Distributed Unit (DU) to the Centralized Unit (CU).
The QSFP28 100G BIDI 80KM is the industry's answer to fiber exhaustion. By utilizing WDM technology to transmit and receive on a single strand of fiber (typically 1271nm/1331nm), operators can double their capacity without leasing new fiber pairs. With an 80km reach, these modules provide the necessary link budget for regional backhaul, ensuring that high-speed 100G connectivity reaches the network edge reliably.
For standard dual-fiber paths, the QSFP28 100G ER4 remains the workhorse for 40km mid-haul links. Utilizing LAN-WDM technology and high-stability EML lasers, it provides a robust, low-dispersion signal that is essential for maintaining the strict timing and synchronization requirements of 5G New Radio (NR) protocols.
As Edge Computing (MEC) gains traction, local data hubs require 400G aggregation to handle the massive influx of data from localized AI processing and IoT sensors.
The QSFP112 form factor is emerging as a favorite for edge hub upgrades. By utilizing four 112G lanes, it matches the density of older 100G ports while delivering 400G of throughput. This allow operators to upgrade their edge routers and switches without the massive power and space overhead typically associated with older 400G form factors. For short-reach high-density clusters, the QSFP56-DD-400G-DR4 provides an ideal 500m breakout solution to connect aggregation switches to local compute nodes.
In the most demanding core-edge locations, the OSFP112-400G-VSR4 offers the ultimate in thermal stability. For 5G carrier platforms that run 24/7 at peak capacity, the OSFP’s integrated heat sink ensures that signal integrity is maintained even in high-temperature outdoor cabinet environments where standard QSFP56-DD-400G-VSR4 modules might struggle.
Sourcing optics for a 5G environment requires a more rigorous audit than standard data center procurement. Sourcing managers should focus on:
Industrial Temperature Performance: Ensuring modules like the QSFP28 100G ZR4 can operate in non-environmentally controlled enclosures.
Chromatic Dispersion Management: For 100KM and 80KM BIDI links, validating the module's ability to handle long-distance signal degradation without high Bit Error Rates (BER).
Protocol Transparency: Ensuring compatibility with CPRI/eCPRI and OTN framing used in telecommunications backbones.
A: For point-to-point links up to 80km, the QSFP28 100G BIDI 80KM is a significantly more cost-effective solution than coherent transceivers, as it avoids the high power consumption and cost of a Coherent DSP.
A: QSFP112 uses fewer electrical lanes (4x112G vs 8x50G), which can lead to simplified board design and lower power consumption in next-generation 112G-based networking equipment.
A: Yes, we provide custom firmware to ensure full compatibility with major carrier-grade platforms from Cisco, Nokia, Ericsson, and Juniper, ensuring full DOM/DDM visibility for NOC monitoring.
Building a resilient 5G network requires a foundation of high-performance optical interconnects. From the fiber-saving QSFP28 100G BIDI 80KM to the high-density QSFP112, Univiso provides the engineering precision and carrier-grade reliability needed to scale your xHaul infrastructure. As the world moves toward 400G and 800G at the edge, our optics ensure that your network stays ahead of the curve, delivering the speed and reliability your users demand.
Upgrading your 5G backhaul or MEC hub? Contact our technical team today for a carrier-grade link audit and a quote on our high-reach 100G and 400G solutions.
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