FS launched a series of 800 Gb/s (800G) ZR/ZR+ coherent optics aimed at helping AI infrastructure operators scale their network capacity.

The pluggables are powered by a five-nanometer (5nm) digital signal processor (DSP) from Marvell and can support transmissions across distances ranging from 75 to 310 miles over single-mode fiber.

FS’ 800G modules consume around 30 watts of power, depending on the specific model, and is positioned for use across metro and regional network deployments. It supports operations across C- and L-band network operations and is compliant with open interconnect standards like 800ZR, octal small form-factor pluggable (OSFP), and quad small form-factor pluggable double density (QSFP-DD) across multivendor environments running either Ethernet or InfiniBand.

“The growth of AI and data center interconnect traffic is driving greater demand for scalable and efficient optical transport. FS 800G coherent modules are designed to help customers simplify network expansion and scale network capacity more efficiently,” Kyrie Zhang, senior technical director at FS, noted.

The 800G mark is seen as the next generational leap for non-hyperscale-level data center network operators, providing double the bandwidth capacity while reducing overall switch numbers.

Dell’Oro Group stats suggest Ethernet accounts for the “vast majority” of 800G sales of late in the past quarter – though sample shipments of the next-generation 1.6 Tb/s (1.6T) are set to commence later this year. A recent Yole Group report projects the optical transceiver market will witness at a 30% compound annual growth rate from $23.4 billion in 2025 to $112.3 billion in 2031, driven by the transition toward 800G and 1.6T optical interconnects.

FS finds itself up against some big names in the 800G optics space, with Cisco unveiling its Linear Pluggable Optics lines back at its EMEA event in Amsterdam. Nokia, meanwhile, is making intense tailwinds in the optics space, while Chinese vendors like Zhongji Innolight and Eoptolink count among key suppliers for hyperscalers like Google and Amazon, respectively.

FS said it plans to iterate on the portfolio to “meet the demands of high‑capacity data center interconnects and long‑haul transmission.”