All-optical intensity modulator by polarization dependent graphene-microfiber waveguide

Ruiduo Wang, Diao Li, Hao Wu, Man Jiang, Zhipei Sun, Yonghui Tian, Jintao Bai, Zhaoyu Ren

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)
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We demonstrated all-optical intensity modulator based on polarization-dependent graphene-covered microfiber (GMF) waveguide. By controlling the polarization mode of incident light, a greatly adjustable enhanced interaction between the propagating light and the graphene can be obtained via the evanescent field of the microfiber. By employing 980-nm pump light and 1550-nm signal light in continuous wave, the strong light–graphene interaction enables a maximum modulation depth of ∼20.86 dB, and by pumping 980 nm wave pulses, we obtained the temporal response characteristics of signal light with modulation rate of 5.13 kHz. This all-optical intensity modulator is compatible with optical fiber systems, and features with ease of fabrication, and steerable high modulation depth, which show potential in graphene's applications such as all-optical switching and all-optical communications.

Original languageEnglish
Article number7105708
Number of pages9
JournalIEEE Photonics Journal
Issue number5
Publication statusPublished - 29 Sep 2017
MoE publication typeA1 Journal article-refereed


  • fiber optics systems
  • Graphene
  • Optical fibers
  • Optical modulation
  • Optical polarization
  • Optical pumping
  • Photonic materials
  • Waveguide devices


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