Modular, reconfigurable optical communication terminals and satellite platforms for LEO, MEO, and GEO constellations. From compact 25 mm aperture terminals to full disk-satellite systems with integrated crosslinks — designed for SDA 4.0 interoperability at DARPA Space-BACN cost targets.
The SatLight™ OCT is a family of modular, reconfigurable optical communication terminals spanning compact to medium form factors. SatLight 1 delivers 1W transmit power through a 25 mm aperture (114 dBm gain), while SatLight 2 scales to 3.2W through a 127 mm aperture (163 dBm gain) for longer-range LEO-to-GEO links.
With 26+ space-qualified SKUs and flight-proven heritage on JAXA's LEO-to-GEO optical link (3+ years operational, beacon-less acquisition in under 60 seconds), the OCT supports both SDA 2.5G and high-speed 100G/200G configurations using separate Tx/Rx beam paths.
SatLight™ DISK is a disk-shaped satellite platform with 5 integrated OCTs in a gimbal-less, flush-window design optimized for VLEO compatibility. At 1.2 m diameter and just 0.18 m thick, DISK provides near-full 360° in-plane crosslink coverage through four quadrant OCTs, plus a nadir-facing fifth OCT for ground station links.
The platform generates 288 W from its 1.2 m solar disk, scaling to 1,442 W in deployed flower configuration with 4 additional panels. Stowed height of just 0.25 m enables dense launch stacking. Links close at 5,000 km with only 2–3W transmit power.
SatLight™ TRACK is the pointing, acquisition, and tracking (PAT) subsystem that enables rapid link establishment between SatLight™ terminals. Using GPS/GNSS-synchronized ephemeris data, the system executes a spiral/raster scan at 50–200 Hz via a fast steering mirror (FSM), detecting the beacon on a coarse pointing sensor before handing off to fine tracking with ≤5 μrad RMS residual pointing.
The FSM operates at 300–500 Hz bandwidth with a Tx divergence of 20–30 μrad, searching a ±0.2–0.5 mrad box with 0.5–5 ms dwell per cell. The entire acquisition sequence completes in under 60 seconds without requiring a cooperative beacon.
SatLight™ GND is a multi-domain ground station OCT providing the terrestrial endpoint for satellite-to-ground optical links. Supporting free-space optical communication at 10–50 km terrestrial range and LEO downlinks up to 6,000 km, GND bridges the SatLight™ DISK constellation to ground-based networks.
GND supports multi-layer connectivity — linking directly to DISK satellites, HAPS (High Altitude Platform Station) relays, and terrestrial point-to-point paths. Compatible with SDA, OISL, CCSDS, and 3GPP fronthaul protocols, the ground station integrates into existing telecom ORAN architectures for seamless space-to-ground data transport.
From compact OCTs to full constellation platforms, SatLight™ delivers SDA-interoperable optical communication at DARPA Space-BACN cost targets with 100% US supply chain traceability.