Active synchronization and modulation of fiber lasers with a graphene electro-optic modulator

Research output: Contribution to journalArticle


Research units

  • Northwest University China
  • Northwestern Polytechnical University Xian
  • VTT Technical Research Centre of Finland


We report the synchronization of two actively Q-switched fiber lasers operating at 1.5 μm and 2 μm with a shared broadband graphene electro-optic modulator. Two graphene monolayer sheets separated with a high-k HfO2 dielectric layer are configured to enable broadband light modulation. The graphene electro-optic modulator is shared by two optical fiber laser cavities (i.e., an erbium-doped fiber laser cavity and a thulium/holmium-codoped fiber laser cavity) to actively Q-switch the two lasers, resulting in stable synchronized pulses at 1.5 μm and 2 μm with a repetition rate ranging from 46 kHz to 56 kHz.


Original languageEnglish
Pages (from-to)3497-3500
Number of pages4
JournalOptics Letters
Issue number15
Publication statusPublished - 1 Aug 2018
MoE publication typeA1 Journal article-refereed

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