Airbus Demonstrates 2.6 Gbps Laser Data Transmission from Orbit

In the global race to build faster space-based internet networks, European Space Agency (ESA) has reported a successful high-speed laser communication test reaching 2.6 Gbps.

The experiment used a laser terminal developed by Airbus, which established a stable communication link with the Alphasat TDP 1 satellite positioned in geostationary orbit about 36,000 km above Earth.

According to ESA, the connection remained stable for several minutes without any packet loss, which is a major technological milestone for communications over such long distances.

Why Laser Communication Is Challenging

Laser communication in space is significantly more complex than traditional radio-frequency transmission. The technology requires:

• A very narrow laser beam aimed precisely at a moving satellite

• Continuous adjustment for satellite movement and platform vibrations

• Compensation for atmospheric distortion

Despite these challenges, researchers demonstrated that the “needle-thin” laser beam remained stable even at geostationary orbit distances.

At a speed of 2.6 Gbps, ESA says that a full-length movie file could be transmitted in just a few seconds, highlighting the potential for extremely fast satellite data transfer.

China Demonstrates Its Own Laser Link

Shortly after ESA’s announcement, China reported its own progress in space laser communication. Scientists from the Institute of Optoelectronics Chinese Academy of Sciences revealed a 1 Gbps laser link covering distances up to 40,000 km.

Key highlights of the Chinese experiment include:

• Connection established in just 4 seconds

• Stable communication maintained for three hours

• Use of adaptive optics technology to counter atmospheric turbulence

Chinese researchers say such systems could eventually transform satellites from simple data relay stations into advanced computing nodes capable of real-time data processing.

Future of Space Internet

The development of high-speed optical communication is accelerating worldwide.

• China has already reported 120 Gbps laser communication tests in low Earth orbit earlier in 2026.

• Meanwhile, SpaceX is preparing the next generation of Starlink satellites, which are expected to support data throughput of up to 1 Tbps.

These advancements indicate that laser-based satellite communication could become a key technology for future global internet infrastructure, enabling faster and more reliable data transmission between satellites and Earth.