Optical phased array with simplified addressing
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United States of America Patent
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Nov 5, 2019
Grant Date -
Feb 28, 2019
app pub date -
Aug 23, 2018
filing date -
Aug 31, 2017
priority date (Note) -
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Abstract
A device for emission of an electromagnetic wave front designed to be connected in use to a light source emitting a light beam, and including at least three emission waveguides, each including a straight segment that receives one or several optical power extraction elements; and on the input side of each of the straight segments, a phase shift element and an optical coupler with an adjustable coupling ratio. At least two straight segments extend along straight lines that are not parallel to each other. An orientation of a principal emission beam is selected, defined in far field, by adjusting the coupling ratio of each of the optical couplers and the phase shift introduced by phase shift elements receiving the optical power. The invention is particularly advantageous in the context of remote detection.
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