Astrogate Labs Develops India's First Indigenous OISL Terminal

Key facts

• Bengaluru-based deep-tech company Astrogate Labs is developing India's first indigenous Optical Inter-Satellite Link (OISL) terminal, targeting flight readiness in 2027.
• The company unveiled its OISL capability and demonstrated AstroLink Micro, its 10 Gbps laser communication terminal, at Bengaluru Space Expo 2026, held from 7-9 September at BIEC.
• Astrogate Labs has supplied an indigenously developed satellite-to-ground laser communication terminal to the Indian Space Research Organisation (ISRO), making it the only Indian company to deliver this technology to the national space agency.
• The company's space-to-ground laser communication terminals have reached TRL 8, meaning they are complete and qualified for flight.
• Astrogate completed cross-compatibility testing with the University of Western Australia's TeraNet mobile optical ground station, confirming interoperability with international ground infrastructure.
• OISL technology allows satellites to communicate directly with one another, moving data across a constellation before it is routed to Earth.
• SpaceX's 2025 Starlink progress report describes more than 13,000 bidirectional laser links operating as an optical mesh in orbit.
• Astrogate is targeting three markets with the terminal: satellite backhaul, sovereign defence constellations and orbital compute.
• The core building blocks of the OISL terminal, including the Pointing, Acquisition and Tracking (PAT) system, optical modem, stabilized coarse tracking gimbals and system-level integration, were developed and validated for the company's space-to-ground terminals.
• Astrogate Labs is headquartered in Bengaluru with an office in Durham, England, and is led by Founder & CEO Nitish K. Singh and Co-Founder & CTO Jayaraman Yogeshwaran.