European Consortium Achieves 2.6 Gbps Laser Communication in Flight

European Consortium Sets 2.6 Gbps Laser Communication Record in Flight

A European consortium led by Airbus and the European Space Agency (ESA) has successfully demonstrated a high-speed optical communication link between an aircraft in flight and a satellite in geostationary orbit. According to an official announcement from ESA, the demonstration achieved a stable data transmission rate of 2.6 Gigabits per second (Gbps) over a distance of approximately 36,000 kilometers.

The test, conducted in late February 2026 from Nîmes-Garons Airport in southern France, marks a significant milestone in the development of secure, ultra-fast connectivity for aviation. By utilizing laser technology rather than traditional radio frequencies, the partners aim to overcome current bandwidth limitations and provide jam-resistant communication channels for government and military operations.

Breaking the Speed Barrier in Orbit

The core achievement of this demonstration was the maintenance of a stable optical link between the “UltraAir” airborne terminal and the Alphasat satellite. While the satellite orbits at a speed matching the Earth’s rotation, the aircraft operates within the atmosphere, subjecting the equipment to speed, vibration, and turbulence.

According to the project partners, the system successfully compensated for these environmental factors to keep a narrow laser beam precisely pointed at the target. The result was a transmission rate of 2.6 Gbps with no bit errors for several minutes, a performance that validates the feasibility of optical links for reliable in-flight connectivity.

Partners and Roles

The project operates under ESA’s ScyLight (Secure and Laser Communication Technology) programme. The collaboration involved several key industrial players:

• Airbus: Led the project and integrated the UltraAir terminal onto a modified business jet for flight testing.
• TNO: The Netherlands Organisation for Applied Scientific Research provided the optical mechatronics and control software essential for stabilizing the laser against aircraft vibration.
• Tesat: A German subsidiary of Airbus, Tesat supplied the laser communication terminal technology and built the counterpart terminal (TDP-1) onboard the Alphasat satellite.
• ESA: Provided strategic oversight and the orbiting infrastructure via the Alphasat TDP-1 payload.

Technical Precision and Security

The demonstration utilized the UltraAir laser communication terminal, designed specifically to establish links from moving platforms like aircraft and Unmanned Aerial Vehicles (UAVs). Unlike radio waves, which propagate in a wide pattern, laser communication utilizes a highly focused beam. This characteristic makes the signal significantly more difficult to intercept or jam, offering a “Low Probability of Interception/Detection” that is critical for defense applications.

François Lombard, Head of Connected Intelligence at Airbus Defence and Space, highlighted the technical difficulty of the feat in a statement:

“Establishing laser links between moving targets at this distance is technically very challenging. Continuous movements, platform vibrations and atmospheric disturbances require extreme precision.”

The counter-terminal in space, the Technology Demonstration Payload 1 (TDP-1) on Alphasat, features a 135mm aperture telescope. Although originally designed for 1.8 Gbps, the hardware successfully managed the increased throughput of 2.6 Gbps during this campaign.

AirPro News Analysis: The Strategic Shift

We view this achievement as a pivotal moment for European technological sovereignty. By mastering the entire supply chain for optical communications, from the mechatronics developed by TNO to the system integration by Airbus, Europe is reducing its reliance on non-domestic satellite constellations.

While the immediate applications are likely military, connecting “combat clouds” and government aircraft securely, the commercial implications are vast. As the technology matures, it could replace congested RF bands in commercial aviation, eventually allowing airline passengers to access fiber-like internet speeds mid-flight. This demonstration serves as a critical proof-of-concept for the expansion of the European Data Relay System (EDRS), often referred to as the “SpaceDataHighway.”

Industry Perspectives

The successful test has been welcomed by industry leaders as a proof point for the viability of optical communications in operational environments. Kees Buijsrogge, Director of Space at TNO, emphasized the security implications of the technology.

“This breakthrough proves that our industry strengthens Europe’s security and its autonomy by leading strategic technology in the field of secure laser communications.”

Laurent Jaffart, Director of ESA Resilience, Navigation and Connectivity, noted that the technology is capable of “evading interference and detection in demanding conditions,” further underscoring its value for secure member state communications.

Frequently Asked Questions

What is the advantage of laser communication over radio frequency?

Laser communication offers significantly higher data rates and is much harder to jam or intercept due to its narrow beam. It is also immune to electromagnetic interference and does not require the same spectrum licensing as radio frequencies.

What is the SpaceDataHighway?

The SpaceDataHighway, or European Data Relay System (EDRS), is a network of satellites that uses laser technology to relay data from Earth observation satellites and aircraft to the ground in near real-time, bypassing the need to wait for a ground station overpass.

Who manufactured the terminals?

The laser communication terminals were developed by Tesat, with critical optical mechatronics and stabilization software provided by TNO. Airbus led the system integration.

Sources: ESA Press Release