Title :
Adaptive coherent optical receiver array
Author_Institution :
MIT, Lincoln Lab., Lexington, MA, USA
Abstract :
A linear four element adaptive heterodyne optical receiver array employing semiconductor lasers is described. The array adaptively adjusts the phase of each subaperture IF signal to correct for wavefront tilt and distortion and non-uniform optical and RF path delays across the array by phase-locking each channel to a reference channel.
Keywords :
antenna phased arrays; optical radar; radar antennas; radar receivers; receiving antennas; semiconductor junction lasers; RF path delays; adaptive heterodyne optical receiver array; distortion; nonuniform optical delay; phase-locking; reference channel; semiconductor lasers; subaperture IF signal; wavefront tilt;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900975
