High-speed optical beam-steering based on phase-arrayed waveguides
Schematic of the proposed optical beam-steering system and operation at (a) zero control voltage and (b) nonzero control voltage .
(a) Schematic of the phase modulator. (b) Phase modulation characteristics at and its variations over wavelength.
Photodetector frequency response at .
Optical beam-steering (a) efficiency and (b) speed as a function of the number of arrayed waveguides.
(a) Schematic and die micrograph of the fabricated optical beam-steering prototype. (b) Differential output voltage at two deflection channels as a function of the control voltage. (c) Frequency response of the differential output voltage at two deflection channels.
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