Phlux Targets 10Gbit/s Optical Links in Space

Phlux Technology has embarked on an exciting collaboration with Airbus Defence and Space and the University of Sheffield to develop satellite terminals utilizing free space optical communications (FSOC). This innovative €500,000 project, funded by the European Space Agency (ESA), is focused on achieving high-speed optical communications of up to 2.5 Gbit/s with Low Earth Orbit (LEO) satellites operating at a wavelength of 1550 nm.

The LEO satellites, positioned at heights of up to 2000 km above the Earth's surface, present a unique challenge for communication systems. The ultimate goal of the project is to establish links capable of operating at speeds of 10 Gbit/s, paving the way for enhanced connectivity and data transfer capabilities in space.

Central to the project are the Phlux Noiseless InGaAs avalanche photodiodes (APDs), which serve as crucial components in the FSOC receivers. These advanced APDs offer a significant advantage over traditional models by providing a 6 dBm increase in link budget at 1550 nm. This enhanced sensitivity allows for the detection of lower signal levels, facilitating the development of faster, higher bandwidth links with minimal latency.

Moreover, the use of Phlux APDs ensures that link integrity is maintained over a wider angle as the satellites move across the sky, enabling sustained performance over extended periods. This technological breakthrough addresses key challenges associated with FSOC, particularly the diffraction of infrared signals passing through atmospheric variations.

Aside from its application in satellite communication, the radiation-hard detector module developed as part of this project holds promise for a range of other uses, including space debris monitoring, greenhouse gas detection, and space navigation. The versatility and reliability of this technology underscore its potential impact on various aspects of space exploration and research.

In a statement regarding the collaboration, Ben White, CEO of Phlux Technology, expressed enthusiasm for the project's potential: "This project validates the value of our patented APD technology, which offers a significant improvement in sensitivity over conventional devices. By enabling higher performance FSOC links, we are contributing to technological advancements in space communication, and we are honored to partner with esteemed organizations such as ESA and Airbus Defence and Space."

Ludovic Blarre, who leads the Airbus Space Systems optical communication roadmap, highlighted the significance of the project in advancing optical communication capabilities for satellites. He emphasized the potential impact of APD products operating at 1550 nm, stating that they could revolutionize the development of cost-effective laser terminals and optical ground stations, thereby accelerating the adoption of optical communication in satellite applications.

The collaboration between Phlux Technology, Airbus Defence and Space, and the University of Sheffield marks a significant step forward in the field of satellite communication technology. With a focus on enhancing data transfer speeds and reliability in space, this project holds promise for transforming the future of satellite-based communication systems.

As the first phase of the project progresses towards its completion in September 2025, stakeholders eagerly anticipate the outcomes and potential breakthroughs that will emerge from this cutting-edge collaboration.

For more information, visit www.phluxtechnology.com.