JAXA Successfully Achieves World’s First 1.8Gbps Space Laser Communication

 

 

 

 

The Japan Aerospace Exploration Agency (JAXA) recently announced that it successfully achieved a speed of 1.8Gbps in a laser communication test between two satellites located in low Earth orbit and geostationary orbit.

This result exceeds the previous record of 240Mbps by 7.5 times.

The experiment involved the 'Laser Utilizing Communication System' (LUCAS) in geostationary orbit and the 'Advanced Land Observing Satellite-4' (ALOS-4) in low Earth orbit, with the two satellites being 40,000 km apart.

The test began on August 20 and was successfully completed.

JAXA stated in a press release, "Achieving 1.8Gbps speed with laser communication between geostationary orbit and low Earth orbit in the 1.5μm wavelength range is a world first," emphasizing that this speed is 7.5 times faster than the previously recorded transmission speed of 240Mbps in the same technical environment.

It further noted that the 1.5μm wavelength is a commonly used wavelength in terrestrial optical fiber communication networks, indicating high potential for future space applications.

JAXA also highlighted that this test has significant implications for increasing the communication time between low Earth orbit satellites and ground stations.

JAXA said, "A typical low Earth orbit satellite can communicate with ground stations for about 1 hour per day, but if data is transmitted from a low Earth orbit satellite to a geostationary orbit satellite, and then to ground stations, the communication time can increase to about 9 hours per day."

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JAXA Successfully Achieves World’s First 1.8Gbps Space Laser Communication