400G QSFP-DD LR4 Optical Transceiver CWDM 10km SMF LC Duplex PAM4
The FiberMania 400G QSFP-DD LR4 optical transceiver enables reliable 400G connectivity over distances up to 10km on single-mode fiber. Using a CWDM PAM4 design and a QSFP-DD Type 2 form factor, it delivers high performance with efficient thermal management for enterprise and service-provider networks.
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Description
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Specification
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Features
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Application
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Custom Service
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FAQ
The FiberMania 400G QSFP-DD LR4 optical transceiver is a long-reach, high-capacity module developed for 400 Gigabit Ethernet links extending up to 10 kilometers over single-mode fiber. By combining four CWDM wavelengths with PAM4 modulation, it delivers reliable 400G performance while maintaining excellent signal stability across extended distances where short-reach optics are no longer sufficient.
Designed to meet the requirements of metropolitan networks, large campus backbones, and inter-data-center connectivity, this transceiver supports a 400GAUI-8 electrical interface and is packaged in a QSFP-DD Type 2 form factor to enhance thermal efficiency. Its dual LC optical interface enables straightforward deployment using standard single-mode patch cords, reducing installation complexity in enterprise and service-provider environments.
Fully compliant with IEEE 802.3bs and 100G Lambda MSA specifications, the 400G QSFP-DD LR4 ensures broad interoperability with modern 400G switches and routers. Integrated Digital Diagnostic Monitoring (DDM) provides real-time visibility into module operating conditions, helping network operators maintain stable, high-performance links with confidence.
| Form Factor | QSFP-DD |
|---|---|
| Data Rate | 400Gbps |
| Ethernet Standard | 400GBASE-LR4 |
| Fiber Type | Single-Mode Fiber (SMF) |
| Maximum Distance | Up to 10km |
| Wavelength | CWDM (4 Channels) |
| Optical Technology | CWDM PAM4 |
| Modulation Format | PAM4 |
| Optical Configuration | 4-Channel Wavelength Multiplexing |
| Transmitter Type | Cooled EML Laser Array |
| Receiver Type | PIN Receiver Array |
| Electrical Interface | 8 × 53.125Gb/s PAM4 (400GAUI-8) |
| Optical Connector | Duplex LC |
| FEC Support | Supported |
| Management Interface | CMIS 5.0 |
| Power Supply | Single +3.3V |
| Maximum Power Consumption | ≤12W |
| Hot Plug Capability | Yes |
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Delivers 400G Ethernet connectivity using PAM4 modulation
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Four-lane CWDM optical design (1271 / 1291 / 1311 / 1331nm)
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Supports 400GBASE-LR4-10 per 100G Lambda MSA
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Transmission distance up to 10km over G.652 single-mode fiber
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400GAUI-8 electrical interface compliant with IEEE 802.3bs
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QSFP-DD MSA HW Rev 5.1 Type 2 housing for improved heat dissipation
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Duplex LC optical connector
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Integrated DDM for real-time diagnostics and monitoring
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Maximum power consumption up to 10W
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Operating temperature range: 0°C to 70°C
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RoHS compliant and Class 1 laser safety certified
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400G Ethernet metropolitan area networks (MAN)
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Long-distance data center interconnects (DCI)
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5G wireless backhaul and midhaul transport
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Campus backbone and enterprise core networks
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Cloud service provider and hyperscale infrastructure expansion
FiberMania provides full OEM, ODM, and private-label services for the 400G QSFP-DD LR4 transceiver. Customization options include EEPROM coding, firmware configuration, vendor compatibility tuning, labeling, and performance optimization to meet specific hardware platforms and deployment requirements.
Q1: How does the LR4 differ from the FR4 version?
A1: Both modules use CWDM technology and LC connectors, but the LR4 is designed for extended reach up to 10km, whereas the FR4 is optimized for shorter distances around 2km.
Q2: What type of fiber is required for this transceiver?
A2: The module is intended for use with G.652 single-mode fiber and standard LC connectors.
Q3: Is this module compatible with existing LC fiber infrastructure?
A3: Yes, as long as the fiber is single-mode and the network equipment supports 400G QSFP-DD modules.
Q4: Does the module support breakout to multiple 100G links?
A4: LR4 modules are typically deployed in point-to-point 400G links. For breakout applications, DR4 or XDR4 solutions with MPO interfaces are recommended.
Q5: Can FiberMania customize the module for specific switch brands?
A5: Yes, FiberMania offers custom EEPROM coding and firmware tuning to ensure seamless compatibility with major networking vendors.
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