Graphene oxide-based microfiber coupler for Q-switched fiber lasers

Citation

Sani, Abubakar and Mohd Yusoff, Norita and Ramli, Rizal and Hilmi Mayzan, Mohd Zul and Alresheedi, Mohammed Thamer and Md Zain, Ahmad Rifqi and Muhammad, Farah Diana and Mahdi, Mohd Adzir (2026) Graphene oxide-based microfiber coupler for Q-switched fiber lasers. Optical Fiber Technology, 98. art. no. 104532. pp. 1-9. ISSN 1068-5200; eISSN: 1095-9912

Abstract

We demonstrate a passively Q-switched fiber laser utilizing a dual-functional device: a microfiber coupler integrated with a graphene oxide/polydimethylsiloxane composite. This composite acts simultaneously as a saturable absorber and a power splitter. This fabricated device, which utilized evanescent-wave interaction within the 5 mm fused region, exhibited a 5.25% modulation depth and an 84/16 coupling ratio. A stable Q-switched fiber laser was achieved with a pump power range of 102.15 to 177.44 mW, producing an emission at a central wavelength of 1.53 μm. The laser's pulse repetition rate was tunable from 27.78 to 54.85 kHz, with a minimum pulse width of 8.21 µs and a maximum pulse energy of 60.62 nJ. This work represents an advancement in compact and high-energy photonic devices for various practical applications.

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Additional Metadata

Item Type:	Article
Subject:	Control and Systems Engineering
Subject:	Electronic, Optical and Magnetic Materials
Divisions:	Faculty of Engineering Faculty of Science Institute of Nanoscience and Nanotechnology
DOI Number:	https://doi.org/10.1016/j.yofte.2025.104532
Publisher:	Academic Press
Keywords:	Graphene oxide; Microfiber coupler; Nanojoule energy; Polydimethylsiloxane; Q-switched pulse; Saturable absorber
Depositing User:	MS. HADIZAH NORDIN
Date Deposited:	13 Apr 2026 04:39
Last Modified:	13 Apr 2026 04:39
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.yofte.2025.104532
URI:	http://psasir.upm.edu.my/id/eprint/123092
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