Tunable mode-locked soliton fibre laser based on single-walled carbon nanotubes

Ahmad, Harith and Reduan, Siti Aisyah and Ismail, Mohammad Faizal and Thambiratnam, Kavintheran (2018) Tunable mode-locked soliton fibre laser based on single-walled carbon nanotubes. Quantum Electronics, 48 (10). pp. 930-935. ISSN 1063-7818, DOI https://doi.org/10.1070/QEL16287.

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Official URL: https://doi.org/10.1070/QEL16287


A soliton fibre laser with a tunable mode-locked output is proposed and demonstrated. The laser is based on a conventional erbium-doped fibre and uses single-walled carbon nanotubes (SWCNTs) as a saturable absorber (SA). Tuning is performed using a tunable Mach – Zehnder filter (TMZF). The SWCNT-based SA has a modulation depth of ~19.0 % and saturation intensity of 45.3 MW cm –2 . Mode-locking begins at a pump power of 6.0 mW and allows pulsed outputs to be generated from 1550 nm to 1566 nm. The 3 dB bandwidth and pulse duration of the output pulse vary slightly from 6.34 nm to 6.90 nm and from 0.51 ps to 0.56 ps, respectively, which results in the corresponding time-bandwidth product varying from 0.40 to 0.46. The results suggest that the proposed laser would have significance advantages in many applications, particularly spectroscopy and telecommunications.

Item Type: Article
Uncontrolled Keywords: Erbium-doped fibre; Fibre laser; Pulsed laser; Q-switching; S-band; Saturable absorber; Single-walled nanotube; Tunable laser
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Oct 2019 00:27
Last Modified: 07 Oct 2019 00:27
URI: http://eprints.um.edu.my/id/eprint/22653

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