Optical true time delay for phased-array antennas: demonstration of a quadratic White cell.
We have demonstrated a proof-of-concept optical device that can produce true time delays for a phased-array radar. This device combines White cells of differing lengths with a spatial light modulator to select between the paths on multiple bounces of a given beam. The approach can handle thousands of light beams and produce hundreds of different delays. The number of delays is proportional to the square of the number of bounces.
Department of Electrical Engineering, Ohio State University, Columbus 43210, USA. anderson@ee.eng.ohio-state.edu
Betty Lise
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Anderson
Craig D
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Liddle