Effect of loop diameter on the performance of MKR-based dual-wavelength erbium-doped fiber laser

Sulaiman, A. and Harun, Sulaiman Wadi and Norizan, S.F. and Dimyati, K. and Ahmad, Harith (2013) Effect of loop diameter on the performance of MKR-based dual-wavelength erbium-doped fiber laser. Microwave and Optical Technology Letters, 55 (2). pp. 236-238. ISSN 0895-2477, DOI https://doi.org/10.1002/mop.27292.

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/mop.272...


A dual-wavelength Erbium-doped fiber laser (EDFL) is demonstrated using a 1.5-m long EDF with a microfiber knot resonator (MKR) structure at the output end. The MKR is fabricated by heating and stretching a 3-cm long piece of EDF to form a microfiber, which is then manipulated to create a knot. The performance of the EDFL is investigated for two different MKR loop diameters. At a loop diameter of 4 mm, dual-wavelength laser is obtained at 1532.4 and 1556.0 nm with peak powers of −7.5 and −7.1 dBm and the corresponding optical signal-to-noise ratios of 22 and 32 dB, respectively. As the MKR diameter is reduced to 2 mm, the operating wavelength of laser shifts to a shorter wavelength, especially for the second lasing with a significant drop in output power due to the bending loss, which is more pronounced at smaller loop diameter. The slope efficiency of the EDFL drops from 0.55 to 0.09% as the MKR diameter decreases from 4 to 2 mm.

Item Type: Article
Uncontrolled Keywords: Microfiber knot resonator; Flame brushing technique; Dual-wavelength laser
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 29 Oct 2015 07:10
Last Modified: 09 Oct 2018 05:45
URI: http://eprints.um.edu.my/id/eprint/14383

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