Astrogate Labs, a Bengaluru-based space-tech startup, is developing what it describes as India’s first indigenous Optical Inter-Satellite Link, or OISL. The company has set a target of flight readiness in 2027.

This is an important distinction. The technology has been unveiled and is under development, but it has not yet been deployed in orbit. If the planned mission succeeds, it could become a major step for India’s satellite communication capabilities.

What is an optical inter-satellite link

An optical inter-satellite link allows two satellites to exchange data using laser beams instead of conventional radio signals.

A simple way to understand it is to imagine satellites creating a high-speed light-based network in space. Rather than sending all data down to a ground station before forwarding it, one satellite can pass information directly to another satellite.

This matters because modern satellites collect large volumes of images, weather data, mapping information, and communication data. Traditional radio-frequency links have limited bandwidth and operate in crowded spectrum bands. Laser communication can carry more data through a much narrower beam.

Astrogate Labs says its technology is based on Free Space Optical Communication, where data travels through light in open space. The company also demonstrated AstroLink Micro, a 10 Gbps space-to-ground laser communication terminal, at Bengaluru Space Expo 2026.

Why this technology is difficult

Sending a laser beam between moving satellites is not easy. Both satellites travel at high speed and must point at each other with extreme accuracy. Even a small movement can interrupt the link.

That is why an OISL terminal needs precise pointing, acquisition, and tracking systems. These systems find the other satellite, lock on to it, and maintain the connection as both objects move through space.

Astrogate Labs has already worked on satellite-to-ground laser communication. According to the company, it has supplied an indigenous laser communication terminal to ISRO. The proposed OISL project takes the next step by enabling satellite-to-satellite data transfer.

Benefits for India

The biggest benefit could be faster movement of satellite data. An Earth-observation satellite, for example, may capture high-resolution images of farms, forests, coastlines, or flood-hit areas. With optical links, that data could potentially move through a network of satellites before reaching the most suitable ground station.

This can help reduce delays in receiving important information. During a natural disaster, faster satellite data may support damage assessment, route planning, and emergency response. In agriculture, more frequent and timely imagery can help with crop monitoring. Defence and maritime operations may also benefit from secure, high-capacity communication links.

The project also has a strategic value. Building the terminal in India can reduce dependence on imported components for a critical part of future satellite networks.

Astrogate Labs and its competition

Astrogate Labs was founded in 2017 by Nitish Singh, Yogeshwaran Jayaraman, and Subhajit Chakraborty. The startup develops laser communication terminals for satellite, ground, and space-to-space applications.

The company operates in a technically demanding global market. As per Inc42, Astrogate’s international competitors include optical communication companies such as Astrolight and Archangel Lightworks, alongside larger space players including SpaceX. The difference is that Astrogate is trying to build this capability with technology developed and manufactured in India.

Key takeaways –

Astrogate Labs’ planned Optical Inter-Satellite Link is not a consumer internet service. It is infrastructure that could help satellites exchange large amounts of data more quickly and securely.

The company is targeting flight readiness in 2027. If successful, the project could support India’s growing satellite ecosystem, improve access to timely space-based data, and strengthen domestic capability in advanced laser communication technology.

Facts Input- PRnewswire

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On September 7, 2026, Pixxel announced a $100 million Series C round, the largest private funding round yet in India’s space-tech sector. The Bengaluru and Los Angeles-based startup was founded in 2019 by Awais Ahmed and Kshitij Khandelwal.

Pixxel is not trying to be just another satellite company. It began with hyperspectral imaging, which is a fancy way of saying its satellites can see far more detail than a normal camera in space. That kind of data can help track crop stress, water pollution, mining activity, forest loss, and climate change in a much smarter way. In simple terms, Pixxel wants to help people see problems earlier and act faster.

What the funding is really for

The new money is meant to help Pixxel move beyond one product and build a wider space-data business. The company says it will use the capital to expand its Honeybee satellite network, improve its Aurora software, build more government-ready space systems, and scale manufacturing in India and the US.

That mix matters. Better satellites bring in better images. Better software turns those images into useful answers. Stronger manufacturing makes the whole operation faster and more reliable. Put together, it means Pixxel is trying to become a complete space business, not just a satellite launch story.

This round also tells us something important about investor thinking. Backers are not only paying for a bold idea anymore. They are betting on a company that has already shown real progress. Pixxel says it has launched six Firefly satellites, launched Aurora, and won or secured work with organizations such as NASA and the US National Reconnaissance Office. It has also been active in Indian government-linked space projects.

Why investors backed it so strongly

The round was co-led by Temasek and Seraphim, with 360 ONE Asset and IMM Investment joining in. Existing investors such as Radical Ventures and growX Ventures also took part. Pixxel says its total funding now stands at $195 million.

That scale of support usually comes when a startup moves from early promise to clear execution. Investors want to see technology that works, customers that care, and a market large enough to grow into. Pixxel seems to have reached that point.

Another reason this funding stands out is timing. India’s private space sector is expanding quickly, and space is no longer being seen only as a government domain. Startups now have room to build satellites, launch vehicles, and data services for commercial and national use. Pixxel sits right in the middle of that shift.

Who Pixxel competes with

Pixxel is not in the same lane as rocket makers like Skyroot Aerospace and Agnikul Cosmos. Those companies focus on launch vehicles. Pixxel, on the other hand, is focused on Earth observation and the software that makes satellite data useful.

A closer comparison is SatSure, founded in 2017, which also works in Earth intelligence and decision-making tools built from satellite data. That is the real race here – not just who can reach space, but who can turn space data into something practical for businesses and governments.

Conclusion

Pixxel’s $100 million raise is bigger than a funding headline. It shows that investors believe Indian space startups can build serious global businesses. It also shows how the sector is moving from isolated innovation to a more complete market, where satellites, software, and services all matter.

For Pixxel, the goal is clear. Use the funding to grow faster, build smarter systems, and make space data useful for real-world decisions. For India’s startup scene, the message is even bigger. Space tech is no longer a distant idea. It is becoming a real business category.

Key takeaways –

• Pixxel was founded in 2019 by Awais Ahmed and Kshitij Khandelwal.
• The startup raised $100 million in its Series C round, its biggest funding round so far.
• The money will support better satellites, stronger software, and larger manufacturing capacity.
• Pixxel’s closest competition is in Earth intelligence and satellite data, not rocket launches.
• The deal signals strong investor confidence in India’s space-tech market.

Facts Input and Image Credit- Press Release