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The Juniper QDD-2X400G-LR4-P Compatible LINK-PP 800GBASE-2LR4 QSFP-DD Optical Transceiver Module is designed for 800GBASE Ethernet throughput up to 10km over eight pairs of singlemode fiber (SMF) with Dual Duplex LC/ UPC connectors. This transceiver is compliant with IEEE P802.3df-2024, IEEE 802.3-2022, QSFP-DD MSA. This module has 2 duplex LC connectors,enabling 2 physically distinct 400G L R4 links from each 800G transceiver without the need for optical breakout cables. It's suitable for 800G Ethernet, Data Center and Breakout 2x 400G LR4 applications.
| Juniper Part Number | QDD-2X400G-LR4-P | Vendor Name | LINK-PP |
| Form Factor | QSFP-DD | Max Data Rate | 850Gbps (8x 106.25Gbps) |
| Max Cable Distance | 10km | Wavelength | 1271nm, 1291nm, 1311nm and 1331nm |
| Connector | Dual Duplex LC | Media | SMF |
| Transmitter Type |
EML | Receiver Type |
PIN |
| DDM/DOM | Supported | Operating Temperature Range |
0°C to +70°C |
| Modulation (Electrical) |
8x100G-PAM4 | Modulation (Optical) |
8x100G-PAM4 |
| Protocols | CMIS Rev 5.0, IEEE 802.3cu-2021, 100G Lambda MSA-400G-LR4-10, QSFP-DD MSA HW Rev 6.01 | Inbuilt FEC | Yes |
Take advantage of our testing program to evaluate the reliability and performance of our optical transceivers.
LINK-PP 400G Connectivity for Data Centers
The LINK-PP 400G QSFP-DD transceiver delivers ultra-high-speed, high-density, and energy-efficient (18W) performance for next-generation networks.It provides a reliable and scalable solution to achieve 400G data transmission with enhanced signal integrity and low latency.Ideal for large-scale cloud computing, AI, and high-performance data center environments requiring maximum bandwidth efficiency.

Tunable Power for DWDM Optimization
The LINK-PP DWDM transceivers feature adjustable transmit power, allowing precise tuning for optimal system margin and signal balance.This flexibility enhances network stability, performance, and link efficiency across dense wavelength environments.By maintaining power equilibrium, they eliminate the need for manual crosstalk correction, simplifying deployment and maintenance.Ideal for long-haul and metro DWDM systems requiring high reliability and scalability.





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