期刊
INFRARED PHYSICS & TECHNOLOGY
卷 125, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.infrared.2022.104200
关键词
Modeconverters; Metamaterial Structures; Telecommunication wavelength
资金
- National Natural Science Foundation of China [62005107,62005074,62105371]
- Natural Science Research Project of Higher Education Institutions of Jiangsu Province [20KJB140007]
- Natural Science Foundation of Jiangsu Province [BK20180862, BK20190839]
- China Post doctoral Fund [2019M651725]
This paper presents an on-chip multimode-interferometer-based mode converter using metamaterial structures, which efficiently converts between the one-order mode and the fundamental mode, and has a compact size and wide bandwidth.
Mode converters play a key role in the mode division multiplexing, which is an emerging technology to enlarge the information transmission capacity. The footprint and the performance of the mode converters are essential for the compact and energy-efficient integrated photonics. We numerically and experimentally demonstrate an on-chip multimode-interferometer-based mode converter, between the one-order mode and the fundamental mode, using metamaterial structures for phase shift and crosstalk suppression, and significantly reduce the footprint. The fabricated device has a high conversion efficiency of 79% and a broad 3 dB bandwidth of >50 nm, with an ultra-small footprint of only 2.4 x 8.9 mu m2.
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