Excessively tilted fiber grating based Fe3O4 saturable absorber for passively mode-locked fiber laser

Hushan Wang, Fengyan Zhao, Zhijun Yan, Xiaohong Hu, Kaiming Zhou, Ting Zhang, Wei Zhang, Yishan Wang, Wei Zhao*, Lin Zhang, Chuandong Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A novel approach to saturable absorber (SA) formation is presented by taking advantage of the mode coupling property of excessively tilted fiber grating (Ex-TFG). Stable mode-locked operation can be conveniently achieved based on the interaction between Ex- TFG coupled light and deposited ferroferric-oxide (Fe3O4) nanoparticles. The central wavelength, bandwidth and single pulse duration of the output are 1595 nm, 4.05 nm, and 912 fs, respectively. The fiber laser exhibits good long-term stability with signal-to-noise ratio (SNR) of 67 dB. For the first time, to the best of our knowledge, Ex-TFG based Fe3O4 SA for mode-locked fiber laser is demonstrated.

Original languageEnglish
Pages (from-to)15693-15700
Number of pages8
JournalOptics Express
Issue number11
Publication statusPublished - 17 May 2019

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© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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