FS Unveils 1.6T Scale-Out Optics with 500 km Coherent Modules for AI Fabrics, Validated on NVIDIA Quantum-X800

September 20, 2026

StorageReview.com USA

Overview

FS has introduced a new AI optics portfolio featuring 1.6T scale-out transceivers for GPU cluster links and 500 km coherent modules for inter-site connections. The 1.6T OSFP-DR8-1.6T and OSFP-2FR4-1.6T modules, designed for InfiniBand XDR networks, utilize silicon photonics and a Broadcom 3nm DSP to deliver 200G PAM4 electrical lanes. These modules are validated on NVIDIA Quantum-X800 switches, addressing high-speed, short-reach interconnect demands.

In Depth

Key Findings

FS has announced a comprehensive AI optics portfolio, introducing 1.6T scale-out transceivers specifically designed for GPU cluster links and 500 km coherent modules for extended inter-site connections. This new offering aims to significantly enhance the performance and scalability of AI fabrics, enabling efficient processing of next-generation AI workloads. The 1.6T modules, in particular, integrate leading-edge technologies to meet the high-density and high-bandwidth demands prevalent in advanced AI environments.

Technical / Clinical Details

Among the newly unveiled products, the 1.6T OSFP-DR8-1.6T and OSFP-2FR4-1.6T modules, custom-engineered for InfiniBand XDR networks, stand out. These transceivers incorporate state-of-the-art silicon photonics technology alongside a high-performance 3nm Digital Signal Processor (DSP) from Broadcom. This combination enables support for 200G PAM4 electrical lanes, facilitating ultra-high-speed data transfer that is challenging with traditional copper connections. FS emphasizes that these modules have been thoroughly validated on NVIDIA Quantum-X800 switches, ensuring compatibility and optimal performance with leading AI platforms. Additionally, the 500 km coherent modules provide long-distance transmission capabilities for up to 500 km, strengthening wide-area connectivity between AI data centers and fostering regional AI cluster collaboration.

Background & Context

As AI models grow in scale and complexity, the interconnects within data center GPU clusters have become a primary bottleneck for performance. Traditional 100G and 400G transceivers are increasingly insufficient to handle the massive volumes of data, making a rapid transition to faster 800G and 1.6T solutions imperative. Silicon photonics, with its advantages in low power consumption, miniaturization, and high integration, is an indispensable technology for realizing optical interconnects in the AI era. FS’s solutions directly address this market demand, providing critical infrastructure components to enable the scaling of AI workloads.

Strategic Significance & Outlook

FS’s new AI optics portfolio offers powerful tools for data center designers and operators building next-generation AI fabrics. The introduction of 1.6T modules will maximize the computational power of GPUs, further accelerating AI research and commercial applications. Moreover, the 500 km coherent modules will simplify the integration of geographically dispersed AI resources, contributing to the construction of larger and more resilient AI infrastructures. The widespread adoption of these technologies is expected to enhance the efficiency and accessibility of AI computing, boosting AI applications across a wide range of industries.

Source: https://www.storagereview.com/news/fs-pairs-1-6t-scale-out-optics-with-500-km-coherent-modules-and-a-handheld-toolkit-for-ai-fabrics

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