The 400G-FR4-LPO specification by the LPO (Linear Pluggable Optics) MSA defines a four-wavelength 100 Gb/s/lane, 53. 125 GBd, PAM4 optical interface using standard single-mode fiber with reach up to at least 500 m, and host-module electrical interfaces for. Linear Receive Optics (LRO) and Linear Pluggable Optics (LPO) are 2 key solutions that engineers building AI infrastructure are exploring to reduce the power from network equipment. We offer transceivers for DR4, SR4 and FR4 interfaces. Our vertical integration for optical engines enables leading performance and per consumption. 25, 2025 (GLOBE NEWSWIRE) — ECOC2025 – The LPO MSA (Linear Pluggable Optics Multi-Source Agreement) Group announced today the completion and availability of the 100 Gb/s per lane Linear Pluggable Optics 400G-FR4-LPO Single-Mode Optical Data Transmission specification. LPO optical module, Linear drive Pluggable Optics, linear drive pluggable optical module The key difference between LPO and traditional optical modules is Linear drive; The so-called "linear drive" means that the LPO adopts linear direct drive technology, and the DSP (digital signal processing). LPO Series — EU-Tested Low-Power Optical Transceivers Next-generation 400G and 800G modules for data centers, AI clusters, and telecoms — validated in a European lab, ready to ship from Europe.