High speed photoelectronic optical phased arrays are demonstrated by vertically arranged GaAs-AlGaAs slab waveguides. The optical phased arrays are composed of 15-channel independently tuned waveguide with end-fire emission. We achieve a very fast beam steering step response of 0.34 µs, beam divergence of 4.7°, and beam steering ranges of around 30°with side lobe level better than 8 dB. The presented optical phased arrays provide a superior approach for high speed beam steering on a nano-photoelectronic integrated chip.
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| http://dx.doi.org/10.1364/AO.396524 | DOI Listing |
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