A narrow linewidth tunable single longitudinal mode Ga-EDF fiber laser


Mohamed Halip, N. H. and Abu Bakar, M. H. and Latif, A. A. and Muhd-Yasin, S. Z. and Zulkifli, M. I. and Mat-Sharif, K. A. and Omar, N. Y. M. and Mansoor, Amilia and Abdul Rashid, Hairul Azhar and Mahdi, M. A. (2018) A narrow linewidth tunable single longitudinal mode Ga-EDF fiber laser. Optics & Laser Technology, 101. pp. 413-418. ISSN 00303992

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A tunable ring cavity single longitudinal mode (SLM) fiber laser incorporating Gallium-Erbium co-doped fiber (Ga-EDF) gain medium and several mode filtration techniques is demonstrated. With Ga-EDF, high emission power was accorded in short fiber length, allowing shorter overall cavity length and wider free spectral range. Tunable bandpass filter, sub-ring structure, and cascaded dissimilar fiber taper were utilized to filter multi-longitudinal modes. Each of the filter mechanism was tested individually within the laser cavity to assess its performance. Once the performance of each filter was obtained, all of them were deployed into the laser system. Ultimately, the 1561.47 nm SLM laser achieved a narrow linewidth laser, optical signal-to-noise ratio, and power fluctuation of 1.19 kHz, 61.52 dB and 0.16 dB, respectively. This work validates the feasibility of Ga-EDF to attain a stable SLM output in simple laser configuration.

Item Type: Article
Uncontrolled Keywords: Fiber optics, Single longitudinal mode, Gallium, Fiber laser, Erbium laser
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 08 Nov 2020 11:22
Last Modified: 08 Nov 2020 11:22
URII: http://shdl.mmu.edu.my/id/eprint/7219


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