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The LINK-PP LQD-LW400-LR8C is a high-performance 400GBASE-LR8 QSFP-DD optical transceiver designed for long-reach data center interconnects. This commercial-grade module supports 53.125Gbps PAM4 signaling across eight LAN-WDM channels, achieving an aggregate 400G data rate over 10km of single-mode fiber. It maintains a low power consumption under 14W and complies with standard 400GAUI-8 electrical interfaces.
| LINK-PP Part Number | LQD-LW400-LR8C | Vendor Name | LINK-PP |
| Form Factor | QSFP-DD | Max Data Rate | 425Gbps |
| Connector | Duplex LC | Media | SMF |
| Wavelength | 1273.55, 1277.89, 1282.26, 1286.67 1295.56, 1300.06, 1304.59, 1309.14 |
Max Cable Distance | 10km |
| Transmitter Type | EML | Receiver Type | PIN |
| Modulation (Electrical) | 8x50G-PAM4 | Modulation (Optical) | 8x50G-PAM4 |
| DDM/DOM | Supported | Operating Temperature range | 0°C to +70°C |
| Protocols | IEEE 802.3bs, QSFP-DD MSA, CMIS 4.1 | Warranty | 5 Years |
Designed to meet rigorous data center requirements, the LQD-LW400-LR8C integrates advanced EML lasers and high-sensitivity PIN detectors. It is fully compliant with the 50G Lambda MSA and CMIS 5.0 management standards, ensuring seamless network integration, superior optical performance, and robust long-haul connectivity solutions.
Operating as a premier enterprise optical module, the LQD-LW400-LR8C delivers exceptional 400G connectivity. It efficiently multiplexes eight optical signals into a single transmission stream, serving as an ideal foundation for modern high-speed routing and switching infrastructures.
Engineered for High-Performance Computing (HPC) environments, the LQD-LW400-LR8C provides ultra-low latency and massive bandwidth. This 400G transceiver is perfectly suited for demanding Infiniband interconnects and scalable cloud networks requiring uninterrupted data throughput.
Utilizing advanced LAN-WDM technology, the LQD-LW400-LR8C drastically improves fiber utilization. By multiplexing multiple wavelengths onto a single-mode fiber, this 400G transceiver maximizes data center cabling efficiency while minimizing long-term infrastructure expansion costs.
The LQD-LW400-LR8C operates across an 8-channel LAN-WDM wavelength grid ranging from 1273.55nm to 1309.14nm. This precise optical spacing ensures minimal signal crosstalk and guarantees stable 425Gbps data transmission across complex network topologies.
Delivering extended connectivity, the LQD-LW400-LR8C supports reliable signal transmission up to 10km over standard single-mode fiber. This impressive reach makes the 400GBASE-LR8 module ideal for cross-campus networking and metropolitan area network deployments.
Featuring a standard duplex LC optical interface, the LQD-LW400-LR8C ensures plug-and-play compatibility with existing fiber infrastructures. This straightforward connector design enables rapid network upgrades to 400G without requiring specialized cabling adjustments.
Equipped with comprehensive Digital Optical Monitoring (DOM) capabilities, the LQD-LW400-LR8C allows network administrators to track real-time parameters. Through a two-wire interface, operators can precisely monitor temperature, voltage, and optical transmit or receive power.
The LINK-PP LQD-LW400-LR8C strictly adheres to global compliance standards. This QSFP-DD transceiver ensures environmental and operational safety for enterprise networking through recognized international quality validations.
Every LQD-LW400-LR8C unit undergoes a comprehensive quality testing program. We simulate extreme network environments to guarantee that each 400G optical module delivers peak performance and unwavering long-term stability.
Demonstrating manufacturing excellence, the LQD-LW400-LR8C boasts multiple regulatory certifications. It is fully certified with CE, FCC, UKCA, UL, REACH, and RoHS, confirming absolute environmental safety and compliance.
Beyond basic quality checks, the LQD-LW400-LR8C is heavily certified for widespread host-device compatibility. It ensures seamless integration with major switch brands, preventing interoperability issues during deployment.
To guarantee superior 400G networking capabilities, the LQD-LW400-LR8C transceiver must pass strict factory evaluations focusing on optical precision and data integrity.
We verify the precise 8-channel wavelengths to ensure optimal LAN-WDM transmission accuracy.
Advanced eye diagram analysis guarantees clear PAM4 signal integrity and prevents data distortion.
Strict bit error testing validates that the pre-FEC BER meets the required network standards.
Thermal cycle testing confirms stable module performance across the 0°C to 70°C commercial range.
Ensuring your LQD-LW400-LR8C optical modules arrive in pristine condition, our secure shipping protocols combine advanced packaging techniques with trusted global distribution networks.
Each transceiver is sealed in premium ESD-safe bags to prevent static electrical damage.
Custom foam inserts provide excellent shock absorption during rigorous international transit handling.
We ensure rapid warehouse processing for immediate dispatch of your business network order.
Partnering with top couriers guarantees swift, secure delivery to international data centers worldwide.
Installing the LQD-LW400-LR8C is a straightforward process. Simply insert the QSFP-DD module into a compatible 400G switch port until it clicks, then connect your duplex LC fiber cable to instantly establish a reliable, high-speed optical connection.
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Professional technical guidance to help customers select the most suitable LQD-LW400-LR8C modules based on network architecture and application requirements.
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
Compatible | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Data Rate (Max) | 425Gbps | 425Gbps | 425Gbps | 425Gbps |
Wavelength | 1273.55, 1277.89, 1282.26, 1286.671295.56, 1300.06, 1304.59, 1309.14 | 1273.55, 1277.89, 1282.26, 1286.671295.56, 1300.06, 1304.59, 1309.14 | 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm | 1271nm, 1291nm, 1311nm, 1331nm |
Connector | Duplex LC | Duplex LC | Duplex LC | Duplex LC |
Cable Distance (Max) | 10km | 40km | 30km | 10km |
Cable Type | SMF | SMF | SMF | SMF |
Operating Temperature | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C |
Form Factor | QSFP-DD | QSFP-DD | QSFP-DD | QSFP-DD |
Transmitter Type | EML | EML | EML | CWDM EML |
Receiver Type | PIN | APD | APD | PIN |
Modulation (Electrical) | 8x50G-PAM4 | 8x50G-PAM4 | 8x53.125G-PAM4 | |
Modulation (Optical) | 8x50G-PAM4 | 8x50G-PAM4 | 4x106.25G-PAM4 | |
DDM/DOM | Supported | Supported | Supported | Supported |
Protocols | IEEE 802.3bs, QSFP-DD MSA, CMIS 4.1 | QSFP-DD MSA Compliant | QSFP-DD MSA, CMIS Rev4.0, IEEE 802.3, IEEE 802.3bs, OIF 56G PAM4 | IEEE 802.3bs, QSFP-DD MSA |
Warranty | 5 Years | 5 Years |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: We need to deploy these in a large data center. Do you offer bulk discounts for orders over 100 units? By M***a on 2026-08-24
A: Yes, we provide tiered wholesale pricing. For orders over 100 units of the 400GBASE-LR8 modules, the unit price drops significantly. You can also apply our volume promo codes at checkout or contact our enterprise sales team directly for customized B2B quotes. By admin on 2026-08-24
Q: Can I use our existing OM4 multimode fiber with this transceiver, or does it strictly require SMF? By S***e on 2026-07-22
A: This specific 400GBASE-LR8 module strictly requires Single-Mode Fiber (SMF) with Duplex LC connectors to achieve the 10km transmission distance using 8-channel LAN-WDM technology. If you are working with multimode cabling, we recommend looking into our 400G SR8 transceiver options. By admin on 2026-07-22
Q: How does the performance of this 400G QSFP-DD compare to original OEM optics, considering the much lower price? By P***n on 2026-05-05
A: It matches genuine brand optics perfectly! Built with high-quality EML lasers and PIN receivers, it offers the exact same 425Gbps PAM4 signaling and 10km transmission reliability, saving you thousands on OPEX without ever sacrificing core network integrity. By admin on 2026-05-05
Q: Are these LQD-LW400-LR8C modules fully compatible with a mixed Arista and Juniper switch environment? By M***t on 2026-04-25
A: Absolutely! Our 400G QSFP-DD transceivers undergo rigorous compatibility testing to ensure seamless interoperability. They are coded for multi-vendor environments and work totally plug-and-play with Arista, Juniper, Cisco, Dell, and other major brands. By admin on 2026-04-25
Q: This model supports 0°C to 70°C for indoor use. Do you have an industrial-grade version for outdoor telecom cabinets? By D***s on 2026-03-10
A: The standard LQD-LW400-LR8C is commercial grade, ideal for climate-controlled server rooms. For harsh outdoor environments and external cabinets (-40°C to 85°C), we do offer industrial wide-temp versions of our transceivers. Please contact our technical support team to match the exact industrial P/N for your outdoor deployment. By admin on 2026-03-10
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