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The FS OSFP-LR4-400G Compatible LINK-PP module is an eight-channel electrical, four-channel optical, pluggable, single-mode fiber, OSFP transceiver for 400G Ethernet applications. It converts eight host electrical data lanes in each direction at 53.125Gbps into four optical lanes at 106.25Gbps, and multiplexes them into one single-mode fiber for 425Gb/s optical transmission.Each electrical lane operates at 26.5625 GBd / 53.125 Gbps (PAM4 encoded) and conforms to the IEEE 400GAUI-8 interface with host KP FEC. It allows communication up to 10km over a duplex LC connector single-mode optical fiber cable. These modules are designed to operate over single-mode fiber systems using CWDM nominal wavelengths of 1271nm, 1291nm, 1311nm, and 1331nm. The optical interface uses a conventional duplex LC SMF connector. This high-performance transceiver module is intended for medium-range SMF data communication and interconnect applications.
| FS Part Number | OSFP-LR4-400G | Vendor Name | LINK-PP |
| Form Factor | OSFP | Max Data Rate | 400Gbps |
| Max Cable Distance | 10km | Wavelength | 1271nm,1291nm,1311nm,1331nm |
| Connector | Duplex LC | Media | SMF |
| Transmitter Type |
CWDM EML | Receiver Type |
PIN |
| DDM/DOM | Supported | Operating Temperature Range |
0°C to +70°C |
| Modulation (Electrical) |
8x50G-PAM4 | Modulation (Optical) |
4x100G-PAM4 |
| Protocols | OSFP MSA, IEEE 802.3 bs-400GAUI-8, IEEE 802.3 cu, and CMIS4.0 | Warranty | 5 Years |
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.





Data Rate (Max) | 400Gbps | 400Gbps |
Wavelength | 1271nm,1291nm,1311nm,1331nm | 1271nm,1291nm,1311nm,1331nm |
Connector | Duplex LC | Duplex LC |
Cable Distance (Max) | 10km | 2km |
Cable Type | SMF | SMF |
Operating Temperature | 0°C to +70°C | 0°C to +70°C |
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