Frontiers in Optics + Laser Science 2022 (FIO, LS) 2022
DOI: 10.1364/fio.2022.jw5a.49
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Subwavelength structure engineered grating coupler for the 2-μm waveband

Abstract: We experimentally demonstrate a subwavelength structure engineered focusing grating coupler on an SOI platform for the 2-μm waveband. The measurement results show a high coupling efficiency of -4.0 dB at 2.037 μm and a 1-dB bandwidth of 70 nm.

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