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- W3134180349 abstract "We design and demonstrate the first, to the best of our knowledge, silicon-based multi-beam optical phased array (MOPA), incorporating a <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mn>4</mml:mn> </mml:mrow> <mml:mo>×<!-- × --></mml:mo> <mml:mn>4</mml:mn> </mml:math> Butler matrix beamforming network. The one-dimensional end-fire array consists of 16 emitters at a uniform pitch together with their corresponding phase shifters and is shared among the beams to realize large-scale aliasing-free beam-steering at reduced complexity. Experimental results show that the device is capable of individual beam aliasing-free operation with a field of view up to 46°. The steering envelope shows a plateau where the peak intensities fluctuate within 0.5 dB. The beamforming and beam-steering performance are also evaluated for simultaneous multi-beam operation. Our work validates the feasibility of beamforming-network-based MOPAs, which are promising for applications including light detection and ranging and free-space optical communication." @default.
- W3134180349 created "2021-03-15" @default.
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- W3134180349 date "2021-03-19" @default.
- W3134180349 modified "2023-10-13" @default.
- W3134180349 title "Integrated multi-beam optical phased array based on a 4 × 4 Butler matrix" @default.
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- W3134180349 doi "https://doi.org/10.1364/ol.419828" @default.
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