Saturable absorber incorporating graphene oxide polymer composite through dip coating for mode-locked fiber laser

Research output: Contribution to journalArticleScientificpeer-review


  • E. K. Ng
  • K. Y. Lau
  • H. K. Lee
  • M. H. Abu Bakar
  • Y. Mustapha Kamil
  • M. F. Omar
  • M. A. Mahdi

Research units

  • Universiti Putra Malaysia
  • Universiti Teknologi Malaysia


Fabrication of microfiber saturable absorbers (SA) is a tedious process. This work demonstrates a simplified method of microfiber SA fabrication by integrating graphene oxide/polymethylsiloxane (GO/PDMS) using dip-coating technique. The idea is to enhance light-matter interaction between graphene and propagating light modes within the microfiber by enhancing the binding strength and proximity of the graphene-polymer composite to the microfiber. The implementation of GO/PDMS SA in an erbium-doped fiber laser cavity has successfully generated ultrashort pulses with pulse duration of 629 fs in the C-band emission region. The success of this work contributes to better insight towards simplifying the fabrication technique of microfiber SAs.


Original languageEnglish
Article number109619
JournalOptical Materials
Publication statusPublished - 1 Feb 2020
MoE publication typeA1 Journal article-refereed

    Research areas

  • fiber lasers, Microfiber, Optical pulses, Saturable absorber

ID: 40174211