期刊
OPTICS EXPRESS
卷 26, 期 7, 页码 8162-8170出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.008162
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资金
- National Natural Science Foundation of China [61775069]
We propose and experimentally demonstrate a novel multimode ultra-compact mode (de) multiplexer for highly integrated on-chip mode-division multiplexing systems. This device is composed of a wide divergence angle asymmetric Y-junction based on subwavelength structure and optimized using an inverse design method. The proposed device occupied a footprint of only 2.4 x 3 mu m(2). The measured insertion loss and crosstalk were less than 1dB and -24 dB from 1530 nm to 1590 nm for both TE0 mode and TE1 mode, respectively. Likewise, a three mode multiplexer is also designed and fabricated with a compact footprint of 3.6 x 4.8 mu m(2). Furthermore, our scheme could also be expanded to include more modes. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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