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Single mode EDF fiber laser using an ultra-narrow bandwidth tunable optical filter

Razak, Nor Farhah and Ahmad, H. and Zulkifli, Mohd Zamani and Mohd Daud, Farah Diana and Munajat, Yusof and Harun, Sulaiman Wadi (2015) Single mode EDF fiber laser using an ultra-narrow bandwidth tunable optical filter. Optik, 126 (2). pp. 179-183. ISSN 0030-4026 E-ISSN 1618-1336

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Abstract

Single longitudinal mode (SLM) erbium-doped fiber (EDF) laser operation using a commercialized ultranarrow bandwidth optical filter has been demonstrated. A 2-m long EDF with an absorption coefficient of 24 dB m−1 at the pump wavelength is used as gain medium. The ultra-narrow tunable filter is used for selection of a single longitudinal mode from the available spectrum of multiple modes, which originally exist in the FBG’s reflection spectrum. Our approach provides a relatively simple and direct method for realization of SLM operation. A high-resolution optical spectral analyser with a resolution of 0.16 pm is used to observe the output spectrum. To verify the SLM operation, the delayed self-heterodyne method is used, giving a measured laser linewidth of 61.5 kHz.

Item Type: Article (Journal)
Additional Information: 8870/84158
Uncontrolled Keywords: Single longitudinal mode (SLM), Ultra-narrow tunable filter, Delayed self-heterodyne method
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science > Department of Physics
Depositing User: Dr M Z Zulkifli
Date Deposited: 04 Nov 2020 21:51
Last Modified: 04 Nov 2020 21:51
URI: http://irep.iium.edu.my/id/eprint/84158

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