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 AmericaFull Article | PDF Article
CorrectionsRan 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)
23 January 2020: Corrections were made to the funding section.
More Like This
Xiliang Peng, Ran Hao, Ziwei Ye, Pengfei Qin, Wenchao Chen, Hongsheng Chen, Xiaofeng Jin, Dongxiao Yang, and Erping Li
Opt. Lett. 42(9) 1736-1739 (2017)
Tangxuan Ren and Lin Chen
Opt. Lett. 44(22) 5446-5449 (2019)
Yulin Wang, Tao Li, and Shining Zhu
Opt. Lett. 42(12) 2247-2250 (2017)