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Optical Fiber Communication Conference
We report an independently tuned 16-channel optical phased array fabricated in silicon for 2D free-space beam steering. The phased array was composed of silicon-on-insulator waveguide surface gratings integrated with thermo-optic phase tuners and was operated both using a control algorithm together with automated real-time far field image analysis to target and shape the beam, and using a lookup table without real-time feedback. The device exhibited 1.6⁰ × 0.6⁰ beam width and 10 dB backgrounddoi:10.1364/ofc.2012.om2j.1 fatcat:lypqab565bellgi4rzzl5nvi6y