Ultrashort and Low-Loss Polarization Rotators Utilizing Hybrid Plasmonic-Dielectric Couplers
Ultrashort and Low-Loss Polarization Rotators Utilizing Hybrid Plasmonic-Dielectric Couplers
复制标题
采用混合等离激元电介质耦合器的超短、低损耗偏振旋转器
DOI:
10.1109/lpt.2014.2365294
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发表时间:
2015-02
影响因子:
2.6
通讯作者:
Li Hongbin
中科院分区:
文献类型:
--
作者:
Yin Mei;Deng Qingzhong;Li Yanping;Wang Xingjun;Li Hongbin
In this letter, we propose a hybrid plasmonic polarization rotator (PR) utilizing asymmetrical directional coupling between a hybrid plasmonic waveguide and a strip Si dielectric waveguide (DW), which features ultracompact size, low insertion loss (IL), and silicon-on-insulator compatibility. The coupling length is only 11.2 μm, much shorter than the PRs based on asymmetrical directional coupling between two strip DWs on the same silicon core layer with the same coupling gap. The presented PR shows a high polarization conversion efficiency (PCE) of 99.9% at 1550 nm with an IL of 0.136 dB, which is extremely low in the reported plasmonic PRs. In addition, it yields the PCE better than 96% and the IL lower than 0.42 dB over a bandwidth of 60 nm.
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DOI:
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发表时间:
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期刊:
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