Graphene oxide-based microfiber coupler for Q-switched fiber lasers
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 evanesce...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Academic Press
2026
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/123092/1/123092.pdf http://psasir.upm.edu.my/id/eprint/123092/ https://www.sciencedirect.com/science/article/pii/S1068520025004079 |
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| Summary: | 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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