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17 March 2023 Array design using rotational symmetry for high performance optical phased arrays
Ilyas Kandid, Winnie N. Ye
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Proceedings Volume 12425, Smart Photonic and Optoelectronic Integrated Circuits 2023; 124250B (2023) https://doi.org/10.1117/12.2650953
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Optical phased arrays (OPAs) have seen frequent implementation in applications requiring beam steering such as light detection and ranging (LiDAR) and free-space optical communications. These applications require narrow beamwidths and large steering ranges which are seldom found simultaneously. Grating sidelobes found in the far field patterns limit the steering range of an OPA due to the uniformly pitched elements spacing of < λ/2. Here we implement an array design that exploits the rotational symmetry of adjacent subarrays to suppress the sidelobes for both planar and circular sub-array lattices, greatly enhancing the OPA’s steering range.
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Ilyas Kandid and Winnie N. Ye "Array design using rotational symmetry for high performance optical phased arrays", Proc. SPIE 12425, Smart Photonic and Optoelectronic Integrated Circuits 2023, 124250B (17 March 2023); https://doi.org/10.1117/12.2650953
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KEYWORDS
Design and modelling
Phased array optics
Beam steering
LIDAR
Silicon photonics
Sensing systems
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