Improvement of 2-μm Thulium-Doped Fiber Lasers via ASE Suppression Using All-Solid Low-Pass Photonic Bandgap Fibers

Kakaie, Zahra and Sharbirin, Anir Syazwan and Mahdiraji, Ghafour Amouzad and Adikan, Faisal Rafiq Mahamd and Ismail, Mohammad Faizal and Ahmad, Harith (2019) Improvement of 2-μm Thulium-Doped Fiber Lasers via ASE Suppression Using All-Solid Low-Pass Photonic Bandgap Fibers. Journal of Lightwave Technology, 37 (22). pp. 5686-5691. ISSN 0733-8724, DOI https://doi.org/10.1109/JLT.2019.2930014.

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Official URL: https://doi.org/10.1109/JLT.2019.2930014

Abstract

All-solid photonic bandgap fibers (PBGFs) were designed and fabricated to work as low-pass filters in 2-μm region. They were used for manipulating thulium doped fiber laser (TDFL) operating in the 2-μm region via amplified spontaneous emission suppression. A sharp lasing peak at 1915 nm was achieved using a single-stage TDFL with full width at half maximum and optical signal-to-noise ratio of 0.3 nm and 39.5 dB, respectively. This lasing is achieved using the fabricated PBGF low-pass filter with cutoff wavelength at 1945 μm and loss of more than 25 dB. In this respect, the resultant TDFL performed better than the one that did not employ the low-pass filter. In this paper, we present a few representative cases involving the all-solid PBGF. We have shown that by increasing the diameter of the fabricated PBGF from 142 to 189 μm, their cutoffs related to their bandgaps shifted from 1727 nm toward longer wavelengths, 2079 nm. As a result, lasers with different wavelengths were generated within 2-μm region. © 1983-2012 IEEE.

Item Type: Article
Funders: Malaysia Ministry of Higher Education under Grant FRGS/1/2016/TK04/UM/01/3
Uncontrolled Keywords: 2-μm laser; ASE suppression; fiber optics fabrication; laser shifting; photonic bandgap fiber; thulium-doped fiber laser; wavelength filtering
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 06 Apr 2020 15:31
Last Modified: 06 Apr 2020 15:31
URI: http://eprints.um.edu.my/id/eprint/24154

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