Custom 200GBASE-FR4 QSFP56 Module
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Dark Fiber Preservation: Forces a massive 200Gbps data payload across a standard Duplex LC single-mode fiber, completely avoiding the CapEx trauma of installing parallel MPO conduit.
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CWDM Grid Mastery: Employs precise internal MUX/DEMUX filters to overlay 4 lanes of PAM4 traffic across the 1271nm to 1331nm Coarse Wavelength Division Multiplexing spectrum.
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DCI Sweet Spot: Stands as the undisputed cost-efficiency champion for Data Center Interconnects (DCI), flawlessly bridging separate buildings up to 2 kilometers apart.
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Optimized Power Draw: Incorporates a highly refined DSP layout that dramatically lowers per-gigabit power consumption compared to long-haul LR4 variants.
Product Description
When hyperscale network engineers must bridge geographically distinct buildings without exhausting leased fiber pairs, the 200gbase-fr4 module is the critical hardware requirement. This highly advanced qsfp56 transceiver avoids massive multi-core cabling by funneling four 50Gbps lanes into a single Duplex LC optical path. Produced directly by WolonFiber, it leverages uncooled CWDM technology to conquer 2-kilometer transmission lengths. This specific 200g transceiver offers an immediate, plug-and-play bandwidth upgrade that rigidly protects your existing physical fiber assets.
Key Features
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Point-to-Point Simplicity: Unlike parallel optic configurations, the 200gbase fr4 executes a strict point-to-point interconnect, vastly simplifying patch panel documentation and fault tracing.
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Balanced Thermal Output: Utilizing uncooled EML/DFB lasers strikes the perfect equilibrium between required optical push and thermal stability, keeping wattage safely under 6.5W.
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Universal MSA Alignment: Shipped with factory-flashed EEPROM configurations precisely mapped to the operating systems of major network hardware vendors.
Application Scenarios
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High-bandwidth inter-facility routing across corporate campuses spanning up to 2km.
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In-place upgrades transitioning legacy 100G CWDM4 duplex links to 200G capacity without pulling new glass.
Technical Specifications
| Specification | Details | Specification | Details |
| Form Factor | QSFP56 | Vendor Name | WolonFiber |
| Max Data Rate | 212.5Gbps (4x 53.125Gbps) | Modulation | PAM4 |
| Wavelength | CWDM (1271, 1291, 1311, 1331nm) | Max Cable Distance | 2km |
| Connector | Duplex LC | Media Type | SMF (Single-Mode Fiber) |
| Transmitter | CWDM DFB / EML | Receiver Type | PIN |
| TX Power | -3.3 to 3.5dBm | RX Sensitivity | < -7.3dBm |
| Power Consumption | ≤ 6.5W | Operating Temp | 0 to 70°C (32 to 158°F) |
| Host FEC | KP4 FEC (Required) | Protocols | 200G FR4 MSA, IEEE 802.3bs |
Engineering FAQs
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Q: Why select the
200gbase fr4instead of a 200G LR4 for a 1.5km optical link?A: The LR4 architecture is engineered for 10km spans and requires actively cooled LAN-WDM lasers, which drastically increases procurement cost and heat generation. For spans under 2km, the CWDM-based FR4 delivers the exact same 200G throughput at a fraction of the price.
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Q: Does the FR4 allow for a 4x50G hardware breakout?
A: No. Because the 200gbase fr4 multiplexes four separate wavelengths onto one Duplex LC fiber pair, it cannot be physically fractured into individual 50G streams at the port level.
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Q: Do I need to purchase specialized single-mode patch cords?
A: No. Standard OS2 Single-Mode Duplex LC cabling works flawlessly. The complex wave multiplexing is handled entirely by the internal optics of the QSFP56 chassis.
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Q: Can this module negotiate a link with an older 100G CWDM4 module?
A: No. Despite sharing the same CWDM grid and LC interface, the 100G module transmits 25G NRZ analog signals, while the 200G FR4 relies on 50G PAM4 digital encoding.
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