Progress in Development of Mulitple-Quantum-Well Retromodulators for Free-Space Data links
NAVAL RESEARCH LAB WASHINGTON DC
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We present an update on the progress of the development of the Naval Research Laboratorys NRLs multiple-quantum-well retromodulators for compact, low-power communications. We report results for data-in-flight on a small, unmanned aerial vehicle at up to 5 Mbps, in preparation for real-time video transfer using an array of devices. This data was taken at Chesapeake Bay Detachment. We also report transference of color video using wavelet compression at 15 and 30 framess, at 4 to 6 Mbps in the lab, at eye-safe intensity levels. The unit is a corner cube modulator using a 980-nm shutter. A five-element array was used for the data-in-flight. First results of our 1550-nm devices are also presented as progress in a cats eye retromodulator.
- Quantum Theory and Relativity