Deep Space Optical Communications

Key Takeaways Deep space optical communication (DSOC) uses laser-based systems for high-bandwidth, interplanetary data transfer.  NASA’s DSOC project achieved a 266 Mbps downlink from 19 million miles using photon-efficient modulation and precision optics.  The system includes a dual-wavelength flight transceiver, ground-based multi-laser uplink, and photon-counting receiver at Palomar Observatory.  Key challenges include beam stability, extreme […]

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Free Space Optical Communications

Key Takeaways Free space optical communications (FSOC) uses modulated laser or LED beams to wirelessly transmit data through free space.  It offers high bandwidth, low latency, and secure transmission—ideal for space, air, sea, and land applications.  FSOC systems vary by type (coherent/incoherent), range, platform, and architecture. Despite benefits, FSOC faces challenges like signal alignment and […]

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