Scalable graphene electro-optical modulators for all-fibre pulsed lasers

Kuen Yao Lau*, Alexander Pyymaki Perros, Diao Li, Maria Kim, Zhipei Sun

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Recently, graphene electro-optical modulators have emerged as a viable alternative to the conventional modulators due to their broadband operation, ultrafast responsivity, small footprint, and low energy consumption. Here, we report scalable graphene electro-optical modulators for all-fibre pulsed laser applications. An actively Q-switched all-fibre laser is demonstrated with a scalable graphene electro-optical modulator for the first time, which is different from the previously reported work that typically implemented graphene electro-optical modulators in a free-space optical system. Our electrically modulated actively Q-switched fibre laser outputs at the centre wavelength of ~1961.9 nm, the tunable repetition rate of 56.5 to 62.5 kHz, the maximum pulse energy of ~80 nJ, and the signal-to-noise ratio of ~46.6 dB. This work demonstrates that the scalable all-fibre integrated graphene electro-optical modulator approach is promising for producing pulsed fibre lasers at 2 µm with high performance and easy integration which are useful in various applications such as medical treatment, material processing, and spectroscopy. This journal is

Original languageEnglish
Pages (from-to)9873-9880
Number of pages8
JournalNanoscale
Volume13
Issue number21
DOIs
Publication statusPublished - 7 Jun 2021
MoE publication typeA1 Journal article-refereed

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