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

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Article number7105708
Number of pages9
JournalIEEE Photonics Journal
Volume9
Issue number5
Publication statusPublished - 29 Sep 2017
MoE publication typeA1 Journal article-refereed

Researchers

  • Ruiduo Wang
  • Diao Li
  • Hao Wu
  • Man Jiang
  • Zhipei Sun

  • Yonghui Tian
  • Jintao Bai
  • Zhaoyu Ren

Research units

  • Northwest University China
  • Lanzhou University

Abstract

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.

    Research areas

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

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