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Abstract
In this Letter, we report a graphene-based hybrid plasmonic modulator (GHPM) realized by employing the electro-absorption effect of graphene. The simulation results show that the modulation efficiency of GHPM, i.e., extinction ratio per length, can be as large as 0.417 dB/μm, which is more than twice as much as that of recently presented graphene-on-silicon modulator. It was found that the improvement in modulation efficiency is mainly due to the enhancement of the overlap between graphene and the mode field in GHPM. A prototype of GHPM was fabricated. The measurement results showed that the GHPM can work in a broadband from 1530 to 1570 nm and an improved modulation efficiency of 1.08 dB (at 30 μm). Finally, we have discussed the factors that influence the modulation efficiency. Our proof-of-concept design may promote the development of on-chip graphene-based plasmonic devices.
© 2019 Optical Society of America
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Ran Hao, Jianyao Jiao, Xiliang Peng, Zheng Zhen, Rakhatbek Dagarbek, Yijun Zou, and Li Erping, "Experimental demonstration of a graphene-based hybrid plasmonic modulator: publisher’s note," Opt. Lett. 45, 827-827 (2020)https://opg.optica.org/ol/abstract.cfm?uri=ol-45-4-827
23 January 2020: Corrections were made to the funding section.
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