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Omnidirectional beam steering using aperiodic optical phased array with high error margin
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DOI：10.1364/OE.26.019154.png)
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摘要
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We propose a pattern-search-like algorithm to design an aperiodic optical phased array for extensive applications in light detection and ranging and free-space communication. The designed phased array with 128 isotropic elements achieves a scan range, peak side-lobe level, minimum beam width, and mean pitch of +/- 82 degrees, -14.34 dB, 0.062 degrees, and 9.75 mu m, respectively. To our knowledge, it has the widest steering range, narrowest divergence, and largest mean pitch for the same waveguide number. The minimum pitch can be greater than 2.67 lambda. to avoid cross-coupling. The calculated relationship between the machine error and side-lobe level indicates that the designed structure has a higher error tolerance than its uniformly spaced counterpart. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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IF:
3.3
论文数:
6.1W
被引数:
14.3W
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引用论文
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